I should point out that the plasma cutting I did in this video is 80% of the plasmaing I've ever done, so I'm no expert! Also yes, I will be replacing the plastic hoses with metal ones
Maybe add a vortex slag droplet catcher? I hear there was a video out there where a woodworking one was made . . . Although since metal is heavy it probably only needs a simple single stage.
This is the first time I've seen some real innovation on a CNC machine. Don't get me wrong, traditional CNCs are great, but mostly for production work. Draw once, produce hundreds, thousands, millions of times. For a hobby shop, where you mostly make things once, the trace functionality of this machine is freaking awesome.
better yet, I've seen these cutters that can follow a track drawn on the workpiece...maybe on a water jet, but on plasma, it could follow the track, "cold", record the travel, then cut...
13:23 a feature that i once have seen on a cutting table, is to place the baffles diagonally. That way when you make a straight cut in the width direction, the chance for mangle up a entire baffle is much lower. Depending on the amount of usage, it can be helpfull to make the baffles with fixed pins that fits in a hole on the bottom, that way baffles can be replaced very easy if they are mangled up after many use. Another suggestion is to use at the hose at the floor a T on it's side or a square box, with the hose connected on the side, that way small pieces of metal get trapped there, and will not be sucked in the fan blower. Sort like a wood dust extraction system works.
I wish I owned a company that made stuff so I could send the device to you for free. Your "not sponsored but sent to me" reviews are way more convincing than other people's paid sponsorships.
When I was in high school shop class, we had a TorchMate plasma table, I think the thing was in 5 digits and needed two control boxes, a special torch, and expensive CNC software to work. I'm fairly certain it also ran on 440. How far technology has come!
I have three phase 400V at home, seriously this house was build in 1971 and this is the original feed. Why the US still runs on 120/240 is a mystery to me.
@@patrickd9551 Because otherwise we will have to run 120/240 AND whatever new system they come up with? After all almost every home is already 120/240.
@@patrickd9551 Alot of european 120v infrastructure was destroyed in ww2 and when they rebuilt, they upgraded. Obviously that never happened in America.
I don't know what any of that means, but I had to opportunity to use (and clean) a plasma cutter in my senior year of HS. Inch thick baked on mate of steel under two inches of partially baked on steel dust. But the many times I used it were fun.
Listening to the downdraft table discussion got me thinking: what if you added a "fume hood" over the top (maybe with a fan similar to the exhaust fan?) that would bring in outside air while the downdraft table was on, that way the "negative pressure" outside air would be pulled in right over the downdraft table, instead of through doors and windows throughout the garage?
For as much as he’s probably going to use the cutter it wouldn’t be worth the time. Also the negative pressure would be inside the building by the downdraft table hence why the higher pressure of the ambient air would go in.
My wager is that the plastic housing for those safety feature contact points just gave way due to heat deformation over time. Failing in the middle of a cut would be inevitable under that premise. LOVE your content, btw! 😁😂
The other reason I could see it failing during a cut would be some issue with insufficient slack in those cords being tugged around somewhere upstream as the head is moving.
I started with this channel because I love woodworking and your funny reviews. Then I found about your "second" channel AW and got completely hooked. I just finished watching how a subscriber brought you shifting stick (among other stuff) for Trabant from EU carrying it on a plane as a walking stick - dedication 🤣 You are a diamond in rough and it is just question of time and mostly for shitty TH-cam algorithm to push you over one million subscribers. You most definitely deserve it. Fantastic stuff, keep it up! Greetings and much love from Croatia 😊
I wish I had what half of this guy has. I would kill to have a small shed to just tinker around in am build stuff. I would love to have a lada with a half running engine. But most importantly, I would love a nice haircut.
DI SI BRATEEE😂 Edit: sori sad vidim da si cura oprosti hahahhaha Edit 2: aaa ipak nisi, oprosti stvarno mislio sam da je Andrea zensko ime... Doduse u Italiji znam da je musko... A desi se sta ces
"Second" channel. LOL. It's great to see this channel already has about half as many subscribers as Aging Wheels. If it keeps this up then AW will actually become his second channel.
I am massively impressed and slightly envious. Also consider googly eyes for the arm, for one glorious moment I thought you'd done this, but it was my pareidolia seeing them in the bolts and washers instead
I love the way you do a "80's montage" while still being totally honest about the issues/problems with your work. 11/10 for realism, 10/10 for being you! Keep being you!!
For the downdraft: you could also provide the fan with fresh air from the outside. so like, outside air is fed above the table, and then fumed bad air is sucked out the bottom. Essentially, that sucking fan is going to pull outside air into your shop, *and there is no way around it* (if it didn't pull outside air, you'd have a warehouse at less than atmospheric pressure). What I'm suggesting is this: instead of the sucking fan bringing outside air in from "wherever," give it a suck or origin. You can put like a door or something over the input hole so you don't lose all the conditioned air.
I know absolutely squat about plasma machines and anything to do with metal but I had to watch as this small cnc type machine is amazing and eventually I’d like to learn how to weld, the plasma cutter is amazing for perfect cuts, etc. can’t wait for more shop builds 🤞🏽
the relative chaos of the cnc tab cutting juxtaposed to the calmness of the spot welder that close in the video gave me a real good chuckle for some reason. Love you're work as always!
A downdraft is the most important addition to a plasma table; my shop was FILTHY after a couple years of running without one, and the dust is ferrous so it is magnetically attracted to motors, computers and settle in and everywhere. In my experience the sparks are out after about 4' so you may want to make a 'trap' by bending your hose strongly upwards so heavier particles can settle in the 'dip', similar to a drip bend in exterior electrical lines. All in all, a nice project. You should just draw in an external program for an accurate DXF, and then set your zero reference to a known position on the stock, say lower LH. Also put weights on your stock to prevent movement, but make sure of torch clearance; for small parts, overlay the corners with larger sheets that you CAN put weights on, to pin down the corners.
i dont normally comment on these videos. but i have to say that you are one of the more entertaining content producers. i also like the fact that, "mistakes were made and here they are" aspect. and as one last point, the fact that it looks like you actually use your shop is refreshing.
I really hope that "just dealing with the fumes in the shop" meant you were wearing an appropriate respirator, like a half mask N99 or something. Edit: oh good! Just got to the point where you said you are. Nice! I also really recommend wearing both gloves when welding and cutting. I know it makes you less dexterous, but the amount of UV light coming off the torch and welder is no joke in terms of long term skin cancer avoidance. I know this can sound like internet comment safety expert bullshit, but I'm literally a shop safety expert. Teaching people (adults and children) to safely use tools of all kinds was my job for nearly 8 years before I switched to teaching math. This plasma cutter is cool! I love the mechanism! It's interesting to see the alternative to a gantry system, and the ability to use it for coordinate measuring is seriously awesome.
Just chiming in, when welding, even tacking, at minimum wear long sleeves and gloves; once I had what I considered a short session, but the next day my forearms were 'sunburned'; as mentioned above, the arc creates nasty radiation, both visible and invisible.
You've got to be my favorite TH-camr.. the content you cover is interesting to me but even if it wasn't, I would still watch because you have a hilarious personality and sense of humor. Keep 'em coming!
In my world, plasma cutter wins over sheet metal shear every.....single.....time! For no particular technical reason. Thank you for the information and technique, and foible sharing!
Nice build, man. Glad you are taking the fumes seriously. That machine is pretty neat, too. (Although with an MSRP of $2500 it better be) Noticed what I think is a Wyse camera on your shop wall. If it is and you haven't seen the security vulnerability for those yet, check it out.
@@GrayRaceCat Generally if I post links my comments get removed. Google "wyze camera vulnerability" and it should point toward articles around spring 2022 about the issue.
We had a big 5'x10' downdraft table at the fab shop i used to work at. we kept a few scraps of plywood/cardboard under the table to cover up any open areas of the table when we were cutting parts. Those arcdroids look awesome and I'd love to get my hands on one!
Quick point - It'd be worth having something to suspend the cable for the plasma cutter - It looks like it'd wear through the cable after used for a long enough period of time.
Earlier today I thought to myself, “I haven’t seen an Under Dunn video in a bit. Wonder when he’ll get around to another video.” I then saw this video tonight. Thank you for reading my mind.
I don't know a thing about downdraft tables except that they exhaust air, but I think you ought to put in a mesh screen over the funnel to sift out particles that might destroy the blower over time. Also, you could benefit from using quick-release pins for the support legs so they don't fall away at the right place but at the wrong time. Maybe use something similar to the type of pins that hold snowblower wheels on the axle.
Best way to not remove all your conditioned shop air as exhaust is set up a make up air. Same principle I have with my laser. Think of a restaurant kitchen exhaust hood, lots of air out but you feed it with controlled air in. Get you a cheap fan draw outside air in blowing at your table. Turn the exhaust and make up air fan on at the same time and you save lots of precious conditioned air. I was sick of my laser exhaust pulling out all my conditioned air in the Texas summer. Takes way to long to cool the space back down. This will create a mini hot or cold spot around the plasma or laser
OK Mr. Dunn, you are, as I've told people about me, a lot smarter than you look and you ever know how to use big words correctly. Amazing. Nice work of the plasma table too. Keep the good stuff coming.
@@UnderDunnOfficial except more exposure to the plasma versus the vertical bars. Maybe this was already suggested, but having a few of the Harbor Freight fiberglass welding blankets on hand to cover the unused portion of the table would also improve airflow on the in-use area.
I wonder if you really wanted to save on conditioned air, you could have a loop-back system where it essentially makes an air curtain and only flows outside air between the two pipes.
I'm excited to see you get an Arcdroid, Robert! I was disappointed when a certain Fabrication YT channel got one and barely used it thereafter :/ With your background and love of CNC ...everything, I'm sure it'll really help your workflow and capabilities!
Another technique you could use to minimize the amount of conditioned air being sucked out: Bring outside (unconditioned air) air in to replace the air being sucked out: direct the outside air directly at the top of your plasma table. This will actually give you more airflow through your table as well: You'll have air coming down from above, plus air being pulled out from the table from below. So you'd be both pushing and pulling the fumes down through those slats. And since the air being directed down from your table is coming from outside, and since that same air is mostly what's being sucked back outside, very little conditioned air will get pulled out.
It's crazy that I wait until I'm alone in the middle of the night to watch your videos so no one can fking bother me. Guys like you and Peter Brown are treats to watch.
Hi, nice to see you again on TH-cam, i just saw that you removed all your video's,you had some great content there. i discovered your channel arround the time that you did your last video and i was bingewatching your entire channel back then. Grtz
Brother, I appreciate you and your incredible personality. I seriously envy your garage space and the fun projects you get to take on. Please for the love of god put some eye protection on. I have the video paused not even two minutes in just to make this point.
Did you seriously just try to fix a plasma cutter head with HOT GLUE!?! I can't decide if you were trolling us or if you genuinely said: "You know what, let's try it! What's the worst that could happen!"
Due the passing air at high speed, the torch doesn't get that hot at all where the hot glue was added. Also the blue insulation on those thin wires have not much higher temperature rating as the hotglue itself. it depends on the cutter itself, some keep air blowing for a short period of time after you released the button, to cool down the brass cup.
Nice! You mentioned pulling conditioned air out so why not make another vent with a hood or just a directed tube over the table to supply outside air in when you are using the table ?
I’ve used a water table, and it works well when you are actually cutting. But for small jobs it is a pain to set up and drain. In the makerspace I used we didn’t completely drain the table, but the process of filling and draining took quite a while. So it isn’t great for sporadic use.
I would put a debris catch box at the bottom with a water basin insert. side mount the air duct on the back side of this. Also, to confine the flow of air being drawn into the table. Cut slots on the sides to add two baffles so as to limit airflow during smaller cuts. 1/3 left and right on each side of the table. Or you could just lay something across the open areas.
some pretty decent editing skills you got there! (a sentence I thought would never come out of my keyboard) ;) Awesome clip. Love your sense of humor. Great work!
I wish I lived by you so I could always hang out there, even after you left. You have a lot of tools I wish I had. I really love my Thermal Dynamics Cutmaster... 50? I forget the model number.
Hi, when you talked about the issue regarding venting the plasma fumes and limiting the amount of air from your shop to the outside I thought "why he just don't take the air from the outside and then expell it" 😂 then I realized that such a thing would require not only a second pipe but also some sort of enclosure...
Besides that issue you had, how is the Harbor Freight plasma cutter? I was looking at one but decided to "buy once, cry once" and got a Hypertherm 45XP.
That's pretty slick, a lot more convenient than the big gantry style ones. If I ever get one it would probably be this style. Does it make sense to make a torch shield or is that only for water table usage?
In the future when you need to bend larger material don't cut all the way across, leave them 1 inch tabs throughout the bend area. Or you can make a relief cut with a grinder on the inside of the bend
I am sure you had a reason, but I can't figure it out. Why didn't you do fume extraction from the top at or near the cutter head? Seems like that would have been the least conditioned air removal?
I just got that same husky table from Home Depot! XD. I was looking for a table that could hold my 3 monitor arm without collapsing under it's weight, and was getting frustrated because apparently table now means the cheapest tatt that you can rest a laptop on, vs this is evidently now called a work bench.
It could be interesting to see how low of CFM you could dial that blower down to, and still get effective fume drafting. I'm betting it'll depend on how much of the table you "block" off with other pieces while you're cutting. the goal being to minimize the amount of conditioned air you dump. it might be an exercise in futility, but I'm not able to experiment on my own.
Next time you have a 48" long bend to make -> instead of cutting that piece completely off. just cut the majority of the way through the part, but leave a few spots where it's not cut (~1" long every 3-4" spaced apart) and then you can just simply fold along that line by hand.
I should point out that the plasma cutting I did in this video is 80% of the plasmaing I've ever done, so I'm no expert! Also yes, I will be replacing the plastic hoses with metal ones
Yeah, watching all of those very hot sparks showering down into the flexi-poly hose was giving me visions of a future shop fire.
Maybe add a vortex slag droplet catcher? I hear there was a video out there where a woodworking one was made . . .
Although since metal is heavy it probably only needs a simple single stage.
But you are a clever bloke and learn fast :-D
Im not joking, you are a smart man.
Happy plasma-ing :-D
Well done! Keep an eye on the exhaust outside the shop. Don't let any sparky metal set fire to your yard.
You have a second channel? Maybe pop that link in the description.
This is the first time I've seen some real innovation on a CNC machine. Don't get me wrong, traditional CNCs are great, but mostly for production work. Draw once, produce hundreds, thousands, millions of times. For a hobby shop, where you mostly make things once, the trace functionality of this machine is freaking awesome.
better yet, I've seen these cutters that can follow a track drawn on the workpiece...maybe on a water jet, but on plasma, it could follow the track, "cold", record the travel, then cut...
I've seen plotters using this idea, but never one that looks so nicely built. It's great they took that idea and turned it into a plasma cutter.
Thanks for reviewing this, been seeing It advertised.
Billy should be the new channel mascot. I vote for a larger one for the car channel set wall
Oh he's already on the set wall. In regular size form though. Billy's greatest can't be replicated
@@UnderDunnOfficial That's what a bigger table was for.
He should be the hood ornament for the Franken-Ford.
13:23 a feature that i once have seen on a cutting table, is to place the baffles diagonally. That way when you make a straight cut in the width direction, the chance for mangle up a entire baffle is much lower. Depending on the amount of usage, it can be helpfull to make the baffles with fixed pins that fits in a hole on the bottom, that way baffles can be replaced very easy if they are mangled up after many use. Another suggestion is to use at the hose at the floor a T on it's side or a square box, with the hose connected on the side, that way small pieces of metal get trapped there, and will not be sucked in the fan blower. Sort like a wood dust extraction system works.
And make them in square sections so you can rotate them around for wear and tear
I wish I owned a company that made stuff so I could send the device to you for free. Your "not sponsored but sent to me" reviews are way more convincing than other people's paid sponsorships.
When I was in high school shop class, we had a TorchMate plasma table, I think the thing was in 5 digits and needed two control boxes, a special torch, and expensive CNC software to work. I'm fairly certain it also ran on 440.
How far technology has come!
I have three phase 400V at home, seriously this house was build in 1971 and this is the original feed. Why the US still runs on 120/240 is a mystery to me.
@@patrickd9551 Because otherwise we will have to run 120/240 AND whatever new system they come up with? After all almost every home is already 120/240.
@@patrickd9551 Alot of european 120v infrastructure was destroyed in ww2 and when they rebuilt, they upgraded. Obviously that never happened in America.
I don't know what any of that means, but I had to opportunity to use (and clean) a plasma cutter in my senior year of HS. Inch thick baked on mate of steel under two inches of partially baked on steel dust. But the many times I used it were fun.
@@patrickd9551 cause 240 does the job. Anyone who needs more can have it done, but for most homes 120 is plenty.
Listening to the downdraft table discussion got me thinking: what if you added a "fume hood" over the top (maybe with a fan similar to the exhaust fan?) that would bring in outside air while the downdraft table was on, that way the "negative pressure" outside air would be pulled in right over the downdraft table, instead of through doors and windows throughout the garage?
We need someone like Tech Ingredients to do the maths and prototyping, but you be onto something here!
For as much as he’s probably going to use the cutter it wouldn’t be worth the time. Also the negative pressure would be inside the building by the downdraft table hence why the higher pressure of the ambient air would go in.
My wager is that the plastic housing for those safety feature contact points just gave way due to heat deformation over time. Failing in the middle of a cut would be inevitable under that premise.
LOVE your content, btw! 😁😂
The other reason I could see it failing during a cut would be some issue with insufficient slack in those cords being tugged around somewhere upstream as the head is moving.
It’s just bad qc
I started with this channel because I love woodworking and your funny reviews. Then I found about your "second" channel AW and got completely hooked. I just finished watching how a subscriber brought you shifting stick (among other stuff) for Trabant from EU carrying it on a plane as a walking stick - dedication 🤣
You are a diamond in rough and it is just question of time and mostly for shitty TH-cam algorithm to push you over one million subscribers. You most definitely deserve it. Fantastic stuff, keep it up! Greetings and much love from Croatia 😊
I wish I had what half of this guy has. I would kill to have a small shed to just tinker around in am build stuff. I would love to have a lada with a half running engine. But most importantly, I would love a nice haircut.
DI SI BRATEEE😂
Edit: sori sad vidim da si cura oprosti hahahhaha
Edit 2: aaa ipak nisi, oprosti stvarno mislio sam da je Andrea zensko ime... Doduse u Italiji znam da je musko... A desi se sta ces
@@IrisGalaxis Hahahahaha, ja riknem 🤣🤣🤣🤣
"Second" channel. LOL. It's great to see this channel already has about half as many subscribers as Aging Wheels. If it keeps this up then AW will actually become his second channel.
Love the compact design of that CNC! Great for those of us with "shared" space workshops.
I am massively impressed and slightly envious. Also consider googly eyes for the arm, for one glorious moment I thought you'd done this, but it was my pareidolia seeing them in the bolts and washers instead
I love Billy and I am excited to see them stashed around the shop in shots like an even more demented elf on a shelf situation.
God I'm so jealous of your shop. I just told my wife we're moving out into the country. She's not happy.
I love the way you do a "80's montage" while still being totally honest about the issues/problems with your work. 11/10 for realism, 10/10 for being you! Keep being you!!
love when company's give creators total control, I hope you make a bunch of things with that cutter
Yes! My favorite editing style on TH-cam!
For the downdraft: you could also provide the fan with fresh air from the outside. so like, outside air is fed above the table, and then fumed bad air is sucked out the bottom. Essentially, that sucking fan is going to pull outside air into your shop, *and there is no way around it* (if it didn't pull outside air, you'd have a warehouse at less than atmospheric pressure). What I'm suggesting is this: instead of the sucking fan bringing outside air in from "wherever," give it a suck or origin. You can put like a door or something over the input hole so you don't lose all the conditioned air.
I know absolutely squat about plasma machines and anything to do with metal but I had to watch as this small cnc type machine is amazing and eventually I’d like to learn how to weld, the plasma cutter is amazing for perfect cuts, etc. can’t wait for more shop builds 🤞🏽
the relative chaos of the cnc tab cutting juxtaposed to the calmness of the spot welder that close in the video gave me a real good chuckle for some reason. Love you're work as always!
A downdraft is the most important addition to a plasma table; my shop was FILTHY after a couple years of running without one, and the dust is ferrous so it is magnetically attracted to motors, computers and settle in and everywhere. In my experience the sparks are out after about 4' so you may want to make a 'trap' by bending your hose strongly upwards so heavier particles can settle in the 'dip', similar to a drip bend in exterior electrical lines. All in all, a nice project. You should just draw in an external program for an accurate DXF, and then set your zero reference to a known position on the stock, say lower LH. Also put weights on your stock to prevent movement, but make sure of torch clearance; for small parts, overlay the corners with larger sheets that you CAN put weights on, to pin down the corners.
Also, as a courtesy, you should provide a link in the description to mfr who sent you the plasma controller. (You can still edit it now)
This was wildly entertaining for me!
i dont normally comment on these videos. but i have to say that you are one of the more entertaining content producers. i also like the fact that, "mistakes were made and here they are" aspect. and as one last point, the fact that it looks like you actually use your shop is refreshing.
I really hope that "just dealing with the fumes in the shop" meant you were wearing an appropriate respirator, like a half mask N99 or something. Edit: oh good! Just got to the point where you said you are. Nice!
I also really recommend wearing both gloves when welding and cutting. I know it makes you less dexterous, but the amount of UV light coming off the torch and welder is no joke in terms of long term skin cancer avoidance. I know this can sound like internet comment safety expert bullshit, but I'm literally a shop safety expert. Teaching people (adults and children) to safely use tools of all kinds was my job for nearly 8 years before I switched to teaching math.
This plasma cutter is cool! I love the mechanism! It's interesting to see the alternative to a gantry system, and the ability to use it for coordinate measuring is seriously awesome.
If it makes UVC I wonder if it makes some amount of x-rays as well
Just chiming in, when welding, even tacking, at minimum wear long sleeves and gloves; once I had what I considered a short session, but the next day my forearms were 'sunburned'; as mentioned above, the arc creates nasty radiation, both visible and invisible.
You've got to be my favorite TH-camr.. the content you cover is interesting to me but even if it wasn't, I would still watch because you have a hilarious personality and sense of humor. Keep 'em coming!
Just love your humour and being practical. Could watch your vids. all day . lol thks frm UK
In my world, plasma cutter wins over sheet metal shear every.....single.....time! For no particular technical reason. Thank you for the information and technique, and foible sharing!
Nice build, man. Glad you are taking the fumes seriously. That machine is pretty neat, too. (Although with an MSRP of $2500 it better be)
Noticed what I think is a Wyse camera on your shop wall. If it is and you haven't seen the security vulnerability for those yet, check it out.
Cheapest cnc plasma controler i have seen
@gannas42, Have you got a link to the Wyse cam information? I'd appreciate it!
@@GrayRaceCat Generally if I post links my comments get removed. Google "wyze camera vulnerability" and it should point toward articles around spring 2022 about the issue.
@@gannas42 Thanks!
I'm amazed how easy you're able to cut and weld these. Really well done , bravo !
I swear my day automatically becomes a good day when you post!!
Ever since I used one at work, I am convinced that plasma cutter is magic.
We had a big 5'x10' downdraft table at the fab shop i used to work at. we kept a few scraps of plywood/cardboard under the table to cover up any open areas of the table when we were cutting parts. Those arcdroids look awesome and I'd love to get my hands on one!
"Excessive and Unnecessary" should absolutely be the name of Robert's garage band.
I love you Rob, you are the best problem solver which you have made by yourself. I wish I was 10% creative as you are
Robert has some of the coolest metalworking tools that I think i've ever seen
Oh my SCARA! That thing is beautiful.
Quick point - It'd be worth having something to suspend the cable for the plasma cutter - It looks like it'd wear through the cable after used for a long enough period of time.
That was awesome!
An 18 minute video to say "I'm making motor mounts"? I'm in!
Commenting to feed the algorithm. And to say cheers!
Earlier today I thought to myself, “I haven’t seen an Under Dunn video in a bit. Wonder when he’ll get around to another video.” I then saw this video tonight. Thank you for reading my mind.
I have no use for any of this stuff. In fact, I didn't understand anything; but, I like your demeanor and work ethic so I watch.
I think this is my favorite build of yours. Seriously a lot of good ideas
I don't know a thing about downdraft tables except that they exhaust air, but I think you ought to put in a mesh screen over the funnel to sift out particles that might destroy the blower over time. Also, you could benefit from using quick-release pins for the support legs so they don't fall away at the right place but at the wrong time. Maybe use something similar to the type of pins that hold snowblower wheels on the axle.
Thanks Billy! Your Awesome and so is this video.... 🤪
LLAP 🖖
I love you, man! I look forward to your posts more than any other TH-camr, your sarcastic delivery is perfect!
i just love watching you build stuff, that cnc is awesome, appreciate the content
Best way to not remove all your conditioned shop air as exhaust is set up a make up air. Same principle I have with my laser. Think of a restaurant kitchen exhaust hood, lots of air out but you feed it with controlled air in. Get you a cheap fan draw outside air in blowing at your table. Turn the exhaust and make up air fan on at the same time and you save lots of precious conditioned air. I was sick of my laser exhaust pulling out all my conditioned air in the Texas summer. Takes way to long to cool the space back down. This will create a mini hot or cold spot around the plasma or laser
OK Mr. Dunn, you are, as I've told people about me, a lot smarter than you look and you ever know how to use big words correctly. Amazing. Nice work of the plasma table too. Keep the good stuff coming.
A very handy plasma cutter. Could do a diode laser the same way. Or turn it into a plasma pantograph, tracing templates at different scales.
I wonder if the extraction would be better if the angle iron is set at 45°, that way the stream of molten slag doesn't hit a horizontal surface
Good question!
@@UnderDunnOfficial except more exposure to the plasma versus the vertical bars. Maybe this was already suggested, but having a few of the Harbor Freight fiberglass welding blankets on hand to cover the unused portion of the table would also improve airflow on the in-use area.
"Do whatever you want to it". They know you AND your followers!
I wonder if you really wanted to save on conditioned air, you could have a loop-back system where it essentially makes an air curtain and only flows outside air between the two pipes.
I'm excited to see you get an Arcdroid, Robert! I was disappointed when a certain Fabrication YT channel got one and barely used it thereafter :/
With your background and love of CNC ...everything, I'm sure it'll really help your workflow and capabilities!
This feels like vintage Aging Wheels :)
Another technique you could use to minimize the amount of conditioned air being sucked out: Bring outside (unconditioned air) air in to replace the air being sucked out: direct the outside air directly at the top of your plasma table. This will actually give you more airflow through your table as well: You'll have air coming down from above, plus air being pulled out from the table from below. So you'd be both pushing and pulling the fumes down through those slats. And since the air being directed down from your table is coming from outside, and since that same air is mostly what's being sucked back outside, very little conditioned air will get pulled out.
The boops! Mahgawd, so cute!
What happens to changing the mower over to lithium batteries. I was really looking forward to that series.
what a cool DIY plasma table! I love it
It's crazy that I wait until I'm alone in the middle of the night to watch your videos so no one can fking bother me. Guys like you and Peter Brown are treats to watch.
Sweet plasma setup, Robert! Might I suggest a guard of some sort to protect your soft, fleshy bits from the vertical edges of those sharp, steel bits?
Hi, nice to see you again on TH-cam, i just saw that you removed all your video's,you had some great content there. i discovered your channel arround the time that you did your last video and i was bingewatching your entire channel back then. Grtz
@@BjornV78 - Thank you kindly, I appreciate that! I'm glad that you enjoyed watching them.
you could always cover the part of the table your work piece is NOT on. So only sucking the air from the cut thats happening. 👍👍
What a video to end my night with!
"a flat horizontal surface for thirty seconds" that's a mood
Brother, I appreciate you and your incredible personality. I seriously envy your garage space and the fun projects you get to take on. Please for the love of god put some eye protection on. I have the video paused not even two minutes in just to make this point.
Did you seriously just try to fix a plasma cutter head with HOT GLUE!?! I can't decide if you were trolling us or if you genuinely said: "You know what, let's try it! What's the worst that could happen!"
Due the passing air at high speed, the torch doesn't get that hot at all where the hot glue was added. Also the blue insulation on those thin wires have not much higher temperature rating as the hotglue itself. it depends on the cutter itself, some keep air blowing for a short period of time after you released the button, to cool down the brass cup.
Instant subscribe because of your delivery.
PS. I need one of these for my new workshop
Nice! You mentioned pulling conditioned air out so why not make another vent with a hood or just a directed tube over the table to supply outside air in when you are using the table ?
That's the best kind of sponsored video: "do whatever you want with it"...
As always, bravo sir!
I love this channel. It reminds me fucking around with my friends.
a little bit of that expanded metal would do well over the air intake for the inevitable piece that falls through the baffles
I’ve used a water table, and it works well when you are actually cutting. But for small jobs it is a pain to set up and drain. In the makerspace I used we didn’t completely drain the table, but the process of filling and draining took quite a while. So it isn’t great for sporadic use.
I would put a debris catch box at the bottom with a water basin insert. side mount the air duct on the back side of this.
Also, to confine the flow of air being drawn into the table. Cut slots on the sides to add two baffles so as to limit airflow during smaller cuts. 1/3 left and right on each side of the table. Or you could just lay something across the open areas.
some pretty decent editing skills you got there! (a sentence I thought would never come out of my keyboard) ;) Awesome clip. Love your sense of humor. Great work!
Hahahahaha! "baffling" got me!
I wish I lived by you so I could always hang out there, even after you left. You have a lot of tools I wish I had. I really love my Thermal Dynamics Cutmaster... 50? I forget the model number.
Hi, when you talked about the issue regarding venting the plasma fumes and limiting the amount of air from your shop to the outside I thought "why he just don't take the air from the outside and then expell it" 😂 then I realized that such a thing would require not only a second pipe but also some sort of enclosure...
Besides that issue you had, how is the Harbor Freight plasma cutter? I was looking at one but decided to "buy once, cry once" and got a Hypertherm 45XP.
I love watching your videos…
AAH SO GOOD TO SEE A NEW UNDER DUNN VID!
If you add 4 " strips under the channels. So they work as individual dampers. So only damper is open, is where the cutting is
2:08 You have impressively steady hands!
Maybe a little grill over the collector hopper to keep the bigger pieces out of it would be a nice touch? Just a suggestion
That's pretty slick, a lot more convenient than the big gantry style ones. If I ever get one it would probably be this style. Does it make sense to make a torch shield or is that only for water table usage?
You can do a trace with the plasma torch as long as the stylus isn't plugged in and you have it calibrated.
That is pretty dang neat!
In the future when you need to bend larger material don't cut all the way across, leave them 1 inch tabs throughout the bend area. Or you can make a relief cut with a grinder on the inside of the bend
i want the ark droid, nice addition
Watching your ungloved welding hand become progressively more tan is fun
You need to remove the guard on the inlet of the hf dust collector it made of plastic. you can add a metal screening.
The age old predicament of "i need the thing im building to build the thing im building"
@9:15 ish
Is that a pottery kiln?
welding table suppler? Excellent video. Endless uses for CNC cutter
I am sure you had a reason, but I can't figure it out. Why didn't you do fume extraction from the top at or near the cutter head? Seems like that would have been the least conditioned air removal?
I just got that same husky table from Home Depot! XD. I was looking for a table that could hold my 3 monitor arm without collapsing under it's weight, and was getting frustrated because apparently table now means the cheapest tatt that you can rest a laptop on, vs this is evidently now called a work bench.
This is the best thing to wake up to (:
It could be interesting to see how low of CFM you could dial that blower down to, and still get effective fume drafting. I'm betting it'll depend on how much of the table you "block" off with other pieces while you're cutting.
the goal being to minimize the amount of conditioned air you dump. it might be an exercise in futility, but I'm not able to experiment on my own.
Olá amigo incrível trabalho!!!!
Next time you have a 48" long bend to make -> instead of cutting that piece completely off. just cut the majority of the way through the part, but leave a few spots where it's not cut (~1" long every 3-4" spaced apart) and then you can just simply fold along that line by hand.
Thank you for adding this to my mental rolodex of tricks.
I've never heard of the Arcdroid. This is really cool!