Making a High Temperature Electric Oven for Heat Treating Steel!!
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- เผยแพร่เมื่อ 11 มิ.ย. 2024
- www.PracticalRenaissance.com
I wanted a small high temperature oven for heat treating steel in my home workshop, so I built one out of some basic electrical components, insulating ceramic bricks, and metal!
As promised, here are the parts I used:
PID Controller w/ 1 Relay: amzn.to/2Mv4uvQ
2nd Relay: amzn.to/2sWk37S
Relay Heat Sink: amzn.to/2Mpeirk
Kanthal A1 22ga Heating Element: amzn.to/2JBAaBX
Ceramic Terminal Block: amzn.to/2JPgOZw
High Temp Wire: amzn.to/2ybShtf
K23 Soft Insulating Firebrick: ebay.to/2HOCgZJ
Complete Parts List excel file: bit.ly/2Nm2FBc
Kanthal Calculator excel file: bit.ly/2NVCQsX
PATREON bit.ly/28X4419
INSTAGRAM bit.ly/1NLu9zv
SUBSCRIBE bit.ly/1OAKcuw
FACEBOOK bit.ly/1YDV3d5
TWITTER bit.ly/1ToGKYm
Camera: amzn.to/2sXCWaq
Microphone: amzn.to/2MpiMOC
TIG Welder: amzn.to/2JJjkxb
Mill: ebay.to/2y7Ximm
Mill CNC Conversion: • Grizzly G0704 FULL CNC... - แนวปฏิบัติและการใช้ชีวิต
I dig it. I'll have to try to make one of these for my home shop when it gets finished.
Hey Jeff,
Thanks a bunch for this video. I have a heat treat project that I really want to do, but it's been on hold for a couple of years because of the cost of commercially built ovens. I'm inspired again! thank you so much.
That came out like a dream Jeff. I'm looking forward to the projects you will wind up putting into your new oven.
Awesome video man! Thanks for sharing! Your clear documentation and explanation of the process has really helped me in the planning of my own oven!!
Nice work! And nicely equipped shop - make sure you utilize it to the fullest extent!
Just what I have been looking for. I will be using your plans for my own in the future. Thanks.
Wonderful job
Fantastic. Thanks for all the descriptions and design details. Joel....
Good project, Great Result! Another for the Bucket List.
Thanks for uploading, cheers from John, Australia.
Very nice project Jeff, I like the angled design of the control housing. Good first build to work the bugs out, I'm sure you have inspired others to create their own ovens.
Great to watch, keep them coming.
Cheers
Thank you!
Nice little oven bro ? I'm gathering my supplies trying to learn from everybody. THANKS FOR FILMING THIS!
Great project and great presentation. Keep it up.
great job brother
Great project, thanks for sharing
Great lesson. Keep up the good work!!!
Stopped in to scope your design out for small scale pottery. Looks intriguing, and could even do Precious Metal smelting, easily!
Came out great. Very similar to what mine will be. Enjoyed.
Thanks Randy! I look forward to seeing yours!!
Thanks for your information, This sounds great
Great video. Planning to make one soon!
interesting project with a easy to follow explanations. Nice.
neat project.
Nice work as usual, keep it up.
Well done sir!
Excellent video, thanks for posting!
Now that is EPIC AWESOME .. Keep the Cam going man We miss you !!
Don't plan on stopping, I just get slowed down sometimes :)
Great video, looks like another project to put on the list.
Thanks! It's not that hard to be honest, and I'm glad I have it now!
I really enjoy watching a skilled person working! I just don't have the patience to do that ! Great video sir ! And the bass clef suggest that we have a passion in common !!! ;-)
very nice. thanks heaps. great idea for a spring winder!
Thanks for showing what electric stuff is needed to buy and where to buy it.
you're a good man, thank you.
Nice Job!
Steve
It's funny watching you explain why and what your oven is for, all while wearing a brownells apron.
That thing is sweet!
I watch TH-cams all evening preferring it over television. I can say you made a great video in every respect...........I didn't have to watch it at double speed !! LOL Count me as a subscriber.
300 likes 0 dislikes... the video is super interesting.loved it
Great video!
Great video, very informative. thank you!
I really enjoy your videos man. I gotta say I've tried and failed at this same project 2 times already, I think this video might make me go in for a third.
Thank you! I wish you the best of luck if you try it again, email me at practicalrenaissance@gmail.com if there are any specific questions you might have, I can at least give them a shot!
I love it, not the first I have seen but your delivery was second to none. I've always been a bit sketch about getting things in and out whilst on incase of touching a coil!! Would have to turn it off every time!!
Yeah a switch on the door would be easy to do, I just skipped it since I'm the only one using it and I play with my fun little on/off switch every time I open the door :)
Love your toolholder rack at 2:10
Great video
Love it, nice work!
That turned out really nice. Definitely a first rate oven.
Thanks Harold!
Thanks for Sharing.
Took me a second to grok the use of 2 relays, but then it clicked, north america -> split phase. Oven looks good, i'm thinking about building my own in the coming months. My house just happens to have 240v 3 phase, so I might just take advantage of that to really make it sing
For electrical isolation I use a combination of a SSR driving a DPST contractor (relay) to power the heating element. As others have said, for safety, a door interlock to isolate and disable power to the heater is also advisable.
IT IS VERY GOOD!!!
Great job! I bought a big Paragon Heat Treat oven. But you have the satisfaction of building your own! I just wrote a check. Not much fabrication pride in that!
time or $$. you had the $$ nothing wrong with that, its what we are all working toward.
Damn nice job!
That was SO awesome! I need one. Well, want. Thank you!
So do you slap da bass?
Just watched several of your videos. Great channel you earned my subscription 😀
Awesome! Thank you very much!
Hi Jeff, excellent video and learn't quite a bit. Regards Kevin
I thought this a really great video! Something about your style fits the questions in my mind. Lots of practical detail! Thank you! I'm wondering one thing, though: for someone with as many advanced skills and tools as you have, if a putty knife or small trowel might have helped you in your mortaring of the bricks? Not a criticism, just wondering. maybe you like to feel things. I know I do sometimes too. You make it clear to me where I need to study up, and I picked up clues from how you did things....considering ohms was a missing link where I knew I needed to know something more to buy my wire and calculate length, but wasn't sure what the missing factor was! Thank you again!
Thanks for including some of the issues you had, like the coils coming loose. I am in the process of building a pottery kiln. Pretty much the same design as your HT oven, just a little larger with 4 coils. Now that it is finished and used, is there anything you would have changed?
Great project. I like how you made the frame. I built my own control box using an arduino uno. It works great and reads in degrees F.
Oh that’s clever I never even thought of using an Arduino!!
Could you share your wiring diagram & Arduino sketch?
Great video I’m looking at making one to hear treat knives. Have a few questions. Yours still going strong. ? Anything you would change? Did you use the cement because it’s not totally enclosed by metal? Thanks for the build and info
That turned out great man! Awesome job!
Gotta say I'm a little jealous too... Its on my list of things to make but there are other projects that must be made first. Ugh..... only so much time in the day (sigh)......
Love this video and plan ona build, is it possible to make one of the for 110v?
Hello, thanks for this video! What is the max temperature can it go till?
Nice! I think we operate on the same wavelength lol, it started with Grizzly 7x14 when I first saw your channel and I had issues with mine, than you threaded a marlin, than you did muzzle device, than you got South Bend at some point you got milling machine and now you build high temp oven. I did all of that as well just not as elaborate and fancy and I didn't even see what you did only saw it later :) I've had firebricks and wire sitting in my garage for couple years, I've been putting this project off for a while, I actually been using my pineapple can forge to heat treat couple dozen of small parts with ease. I want to build electric metal melting forge to melt zinc and aluminum and possibly brass. I noticed you used same brand of wire that I got except I got mine in 16 gauge as it's not easy for me to access 220v so it will run on 110v. I've been looking at same terminal blocks on ebay but the ratings are confusing. Some sellers list it as 5A only and some higher so I didn't know who to trust. Regarding PID the first one I build for my lead melting pot about 3 years ago I also ended up with one reading in Celcius and while it worked great I found it annoying so I bought MYPIN and it can read in both, it also has 2 rows of display, I like it much better. It only $20 on ebay. I also noticed all people used more liquid dark grey cement to "glue" the bricks, it's more liquid, I'll look in to that. Another thing I was trying to find was ceramic tube insulators for wires coming out the back, but I guess it's not really necessary.
Man that was awesome, I wish I had the knowledge to comprehend the electrical components though.
Excellent build. I was eondering why you are using two SSRs to switch both ends of the coil, security reasons? I have built a PID controller for my LEE pot using just a single SSR (basically the same application). The phase is switched by tje SSR, the other end just connected to neutral. The main power switch double pole, of course.
This is a great video! Im at the point where i want to control my heat treat better also but im torn as to make one or just buy one. When i had tons of free time i made my own 2x72 grinder, but now i almost dont have time to even make a knife let alone a oven.
I saw a used kiln/oven on craigslist that worked fine, but could be upgraded with a PID controller....$225 asking. 9"x9"x6" inside dimen. hard to beat. so maybe look for a used one to upgrade?
You are like a half a brick away from making the best home Pizza oven ever! I see these guys build a behemoth wood fired pizza dome out in their back yard. So if they just want a simple pizza, its only worth the preparation and wait time to have multiple people over for many pizzas. It takes like 3 minutes to cook a nice pizza in a 900 deg oven. With your invention adapted to size, you could still use it for work, then at the end of the day, throw a pizza in there man.
Thanks for your build log, I'd go with confining the coil within its own space, no staples needed, and yeah man you can weld :) aluminum welding, it like playing with butter. How are your coils doing after 5 years?
I really appreciate this video and all the info you shared!!! How is the accuracy at lower temperatures? I just built a VERY similar oven and I'm having a difficult time with the temp reading... I have the Inkbird PID that will display in F/C, but other than that, its nearly identical to yours. However, room temp is reading about 150°F, when it's actually about 60° in my garage. I swapped to another K thermocouple I had on hand and have the same result +/- 1°. The Inkbird instruction manual is a joke and not much help. Is there a way to calibrate the input?
Neat.
Nice👍
You can usually use water to thin up refractory.
That's great! It could even melt aluminium and copper.
so it's been a couple of years what would you have done differently? Maybe thicker Kanthal and more of it to get the same ohm resistance? What was the over all ohm resistance for the length of wire you did go with? A heat up time of 15 - 17 minutes is really good. You should be happy about that.
Do you know of an expensive book, or some place I can find referenced information on what temps to heat treat or weld temps for various steels? I'm planning on making my own forge and have no idea what temps it will be experiencing or what to get for thermometer.
bem pratico,mas tem que se cuidar muito do modo como se instala o elemento de aquecimento.
Can you tell me what electrical components I would need in order to make a 120v oven? Thanks!
Why did you use two relays? I think one SSR on phase wire would be the same! However great job!
Vegoil guy watered down the refractory cement in his project... it painted on really well
How far does that thermocouple need to stick out? I'm wondering if I bought the wrong one. Mine will only stick out about an inch or a little less.
Anyone know what size mandrel was used to coil the a1 wire? The calculator excel doc is not clear on the size. I'm trying to sort out the coil diameter, and length of coil to hit that 40 ohm mark. Thanks in advance.
how did you test your kanthal wire? Im gonna test mine to just to get a feel of how high it can get. Thanks
What did you do to make the PID go through the tuning process?
where you attach the coil? so it can glowing like that?
Very nice, as usual. I noticed you were using the SB lathe on the handle - do you ever use the lil' Grizzly anymore?
Good eye! Yeah the South Bend is easier to keep ready to go for most projects but the little grizzly is still in the shop and plugged in! You can even see it in various background shots I’m sure, it lives right next to the other lathe
Where did you get your thermocoupler probe? Or is it the one that comes with the pid?
Hi, how did you calculate the wire diameter needed, how to choose the right one ?
One trick with refractory cement is that you normally want as small of a junction as possible not like mortar you would see normally between red bricks. The refractory cement doesn't have near as good thermal properties and sounds just be used as a glue more than anything
I have never done this before... Can u explain about the wiring part .... And the oven I make needs to be heated till 300 degree Celsius only
Man even with a gas lens, your tungsten stick out is insane lol
great ... what is outside cover temperature when inside is 900 degree C ?
for a 150x150x600mm oven at 127v voltage so that it reaches a temperature of 1100 ° C which power and wire do you recommend?
Could you possibly save your excel file as 2003 Excel for those with older versions ? TIA
Good wattage per square foot/meter.
hallo,
in the minute 3:46 you are using an angle grinder (pneumatic) .
Can you tell me where to buy it?
thx
Great project! I'm using it as a base to develop my own heat treatment oven. I have just one question: how come are you using 2 SSRs? I will plug my oven at 220 V socket. TIA!!!
Ciao Samuele, vorrei realizzare un fornetto anch'io. Sto facendo la lista della spesa, tu sei riuscito a trovare tutto? Non capisco perchè usa 2 relè... eventualmente hai un contatto dove ci possiamo sentire?
Great video¡¡ Congrats¡¡. Would you/anybody recomend a PID model which will be valid for 1000 degrees like this. The model in your list is no longer available and I can't find another that confirms it gets to 1000 degrees. thanks in advance.
Is The controll box groundet?
Just add some water to the refractory cement if it starts to dry out.
In reviewing your Kanthal Calculator spreadsheet, what is the unit of measurement for the "length of coil at wind size" and what is that specifically referencing? it would appear that the total length of coil that you installed in the channels you carved was roughly 50" or so by rough estimation, but the value in the spreadsheet in 16.
Same question here. No unit at all. And refering to your question, there is also no aswer at all.
It's in inches. Looking at the example (start with 33 inches of wire, end up with a 17" coil). Think about it: The mandrel is 0.156" OD. Multiply that by pi and you got 0.48 INCH needed to get around the mandrel. 33 inches times 0.48 is roughly 16 or 17", which would stretch out a great deal for install.
How would the parts list of this change to accomodate vertical placemnt and increased lenght, up to 4 feet long and 6 inch wide for sword making?
Please keep in mind i cannot afford 240 power. i only have standard 120
What did it end up costing? I'd consider doing this if it saves significant money.
About how much did it cost to build?