When I saw a homemade machine for working with glass, I liked and subscribed to your channel. I will now watch your video with interest. Thank you It’s interesting for me to watch what enthusiastic people do.
I like the work and really think you're on the right track and have it well reasoned out. I think the setscrews driving the jaws will be an issue another has mentioned. 2 thoughts. First i think a spring loaded tensioner is a mistake as it will produce backlash and might be a large problem when reversing directions, leaving one chuck behind. Second if the headstocks need stiffening up, machine some spacers with an 7/8 internal thread the correct length for the distance between the bearing blocks inste5od nuts. Then when tightened down you'll have bith bearings very rigid and stiffen up the c shaped frame
I just discovered your channel yesterday and it was an instant subscribe. Now I'm working through your back catalog quite happily :) and cursing you for burdening me with yet more hobbies I want to do but don't have the time or money for :D
Have a look at "Advanced Tinkering" on TH-cam... here's some "next level" scientific glassblowing on there and a lot of it (if not all) actually doesn't use a glass-lathe at all - just all done by hand-manipulation.... it's amazing to watch. I LOVE your "cheapskate" solution to synchronisation and manual control. That rotary encoder looks like it'll have a good sorta natural feel to it.
I’m going to sound like a safety snob, and I don’t want to seem dismissive, but *DON’T FORGET AN EMERGENCY STOP BUTTON!* Otherwise this is an amazing project, having Open Source Glassworking tools will really open up some interesting avenues!
Very cool designs but idk how I feel about the stepper motors vs having a drive shaft. When adding side seals on the machine I wanna be able to grab the chuck and spin the lathe as I need, not reaching for a dial on the back of the machine. Have you ever blown glass on a lathe? If not maybe give it a try and you’ll see why glass lathes are made the way they are.
100% this. Hand rotating the chucks when doing certain welds is essential. If youre able to build this with a drive shaft, you really should go that route. 8 year glass worker, 3 years on a lathe.
If you had a rotary encoder involved, could you use the motor (servo perhaps, or could you do stepper still?) to “virtually link” the speed but keep it at a “hold in place/let this side just spin? More convoluted than a drive shaft yes, but the design flexibility/affordability (at least in my armchair napkin math with NO hands on experience …) may be good.
@@KoveydI was thinking the same thing but there are ways to synchronize the motors so if you moved one by hand the other will move in time or you could slow one down or freewheel it
Ive wanted to get a glass blowing lathe but they are pretty ridicuulously expensive. I hadnt thought to get into building one myself, but this video presents a cool alternative.
Fortunately companies are catching on and are starting to make cheaper ones (seam, Indian, abr etc) so within 3-5 years your gonna see more that will work within a smaller budget (3-5k). Right now all your gonna find are old ones like my 62 Heathway which are great and are serviceable unlike the aforementioned options 😊 best of luck 🎉
Very interesting project. One comment: stepper motor drivers (particularly microstep drivers which is probably what you need) do some fairly fancy measurements of currents in the motor windings to optimize the way they drive the motors. Your idea of connecting two motors in parallel (or series) might mess that up. Try it, but if you experience problems I would try two drivers fed from a common control circuit.
Totally. I didn't get into it in the video but I'm hoping that using a dumb driver (no anti-resonance) and limiting the speed will let me avoid those problems. If I have to put another driver in there it's no big deal
@@SignalDitch You obviously know what you're about. The first time I tried smard drivers I was so impressed by the improvement in stepper performance that I've never used dumb drivers since, but if they work in your application then go for it. BTW - how are you going to get the head stock and tail stock concentric? I hope you can get enough precision from those sheet metal boxes. ETA - I assume you have a solution for balancing the chuck too.
@@foffu "how are you going to get the head stock and tail stock concentric?" They should automatically be pretty close. I think most of the misalignment will be vertical and minor. Practically, alignment will just mean putting a piece of glass through both chucks and shimming/bending things until it's good enough. As for balancing, my plan right now is to have a few bolts through the two parallel plates of the chuck that I can stack washers on until it spins okay. I think the word "lathe" places this project into a context where people are very concerned about precision, but the nature of the work and the material is such that it will take up a lot of slack.
I see you used his design for the chuck also with the belts. I liked his belt design ok the back also. Still , I really have been trying to get a good enough mill to machine a near rip off of Vertigo lathes in their one piece splined gear/hollow spindle. You really need to check out the internals of those machines! If only I hadn’t lost my inventory several times because of poor logistics. I have acquired very rare and plentiful tube parts and graphite and tungsten for days but then someone decides to not follow up on shipment and it becomes forfeit! The painful nature of brokers!
I'm more a fan of dove tail ways than tubular with roller bearings. As far as the bore, I've been investigating diesel engine piston liners. A high grade piece of metal that a flange can be welded to.
I used a single large stepper motor and then used pillow blocks with a hexagon center I then connected them with a hexagonal shaft this was all placed behind the lathe with a belt from each chuck attached to the shaft.. I don't know if I'm explaining it well but it made it to where the tail Chuck can move left and right while staying in sync and using only one motor no 3D printer no nothing I built it with two wood lathes the only problem I had was my truck size I didn't have a big enough inner diameter but I made it at 16 and I had nothing but hand tools if I did it today I definitely do the truck different but I've not seen anybody connect both chucks the way I did so id figure I'd mention it
11months later how is this lathe running im super interested in making one myself but using some rudimentry motors and gearing, i can work with stepper motors but dont wish too
![เจ็บที่ยังฮัก - ม่อน วรวิทย์ [ Official Mv ] จอนนี่มิวสิค](http://i.ytimg.com/vi/KALIGSRSjFs/mqdefault.jpg)
watching the jaws work is tremendously satisfying
Yeah, most rewarding part of the project so far. A real, "this might actually work" moment
When I saw a homemade machine for working with glass, I liked and subscribed to your channel. I will now watch your video with interest. Thank you It’s interesting for me to watch what enthusiastic people do.
I like the work and really think you're on the right track and have it well reasoned out. I think the setscrews driving the jaws will be an issue another has mentioned.
2 thoughts. First i think a spring loaded tensioner is a mistake as it will produce backlash and might be a large problem when reversing directions, leaving one chuck behind. Second if the headstocks need stiffening up, machine some spacers with an 7/8 internal thread the correct length for the distance between the bearing blocks inste5od nuts. Then when tightened down you'll have bith bearings very rigid and stiffen up the c shaped frame
I just discovered your channel yesterday and it was an instant subscribe. Now I'm working through your back catalog quite happily :) and cursing you for burdening me with yet more hobbies I want to do but don't have the time or money for :D
This is me right now!
Have a look at "Advanced Tinkering" on TH-cam... here's some "next level" scientific glassblowing on there and a lot of it (if not all) actually doesn't use a glass-lathe at all - just all done by hand-manipulation.... it's amazing to watch.
I LOVE your "cheapskate" solution to synchronisation and manual control. That rotary encoder looks like it'll have a good sorta natural feel to it.
I’m going to sound like a safety snob, and I don’t want to seem dismissive, but *DON’T FORGET AN EMERGENCY STOP BUTTON!*
Otherwise this is an amazing project, having Open Source Glassworking tools will really open up some interesting avenues!
Cool build. Not sure if I like this one as an electronic nerd or a glass blower but either you have a new subscriber. Thanks for a good vid
So much juicy stuff in here!! can't wait to see more.
Loving "Petrichor"
Very cool designs but idk how I feel about the stepper motors vs having a drive shaft. When adding side seals on the machine I wanna be able to grab the chuck and spin the lathe as I need, not reaching for a dial on the back of the machine. Have you ever blown glass on a lathe? If not maybe give it a try and you’ll see why glass lathes are made the way they are.
100% this. Hand rotating the chucks when doing certain welds is essential. If youre able to build this with a drive shaft, you really should go that route. 8 year glass worker, 3 years on a lathe.
If you had a rotary encoder involved, could you use the motor (servo perhaps, or could you do stepper still?) to “virtually link” the speed but keep it at a “hold in place/let this side just spin?
More convoluted than a drive shaft yes, but the design flexibility/affordability (at least in my armchair napkin math with NO hands on experience …) may be good.
@@KoveydI was thinking the same thing but there are ways to synchronize the motors so if you moved one by hand the other will move in time or you could slow one down or freewheel it
Ive wanted to get a glass blowing lathe but they are pretty ridicuulously expensive. I hadnt thought to get into building one myself, but this video presents a cool alternative.
Fortunately companies are catching on and are starting to make cheaper ones (seam, Indian, abr etc) so within 3-5 years your gonna see more that will work within a smaller budget (3-5k). Right now all your gonna find are old ones like my 62 Heathway which are great and are serviceable unlike the aforementioned options 😊 best of luck 🎉
Very interesting project. One comment: stepper motor drivers (particularly microstep drivers which is probably what you need) do some fairly fancy measurements of currents in the motor windings to optimize the way they drive the motors. Your idea of connecting two motors in parallel (or series) might mess that up. Try it, but if you experience problems I would try two drivers fed from a common control circuit.
Totally. I didn't get into it in the video but I'm hoping that using a dumb driver (no anti-resonance) and limiting the speed will let me avoid those problems. If I have to put another driver in there it's no big deal
@@SignalDitch You obviously know what you're about. The first time I tried smard drivers I was so impressed by the improvement in stepper performance that I've never used dumb drivers since, but if they work in your application then go for it.
BTW - how are you going to get the head stock and tail stock concentric? I hope you can get enough precision from those sheet metal boxes.
ETA - I assume you have a solution for balancing the chuck too.
@@foffu "how are you going to get the head stock and tail stock concentric?"
They should automatically be pretty close. I think most of the misalignment will be vertical and minor. Practically, alignment will just mean putting a piece of glass through both chucks and shimming/bending things until it's good enough.
As for balancing, my plan right now is to have a few bolts through the two parallel plates of the chuck that I can stack washers on until it spins okay.
I think the word "lathe" places this project into a context where people are very concerned about precision, but the nature of the work and the material is such that it will take up a lot of slack.
Nice work!
I see you used his design for the chuck also with the belts. I liked his belt design ok the back also. Still , I really have been trying to get a good enough mill to machine a near rip off of Vertigo lathes in their one piece splined gear/hollow spindle. You really need to check out the internals of those machines! If only I hadn’t lost my inventory several times because of poor logistics. I have acquired very rare and plentiful tube parts and graphite and tungsten for days but then someone decides to not follow up on shipment and it becomes forfeit! The painful nature of brokers!
Welcome to the club
I'm more a fan of dove tail ways than tubular with roller bearings. As far as the bore, I've been investigating diesel engine piston liners. A high grade piece of metal that a flange can be welded to.
If I'm not mistaken cylinder liners are made of cast iron or cast steel, neither of which are easy to weld.
@@siggyincr7447 Silver solder or brass brazing it is then. Saves from needing a welding set up, sometimes.
Oohoho this is going to be good...
Cool!
How much would it cost for the left and right parts without the stand and the passage through the fitter to be 160mm. with a motor.
Greeting !
I used a single large stepper motor and then used pillow blocks with a hexagon center I then connected them with a hexagonal shaft this was all placed behind the lathe with a belt from each chuck attached to the shaft.. I don't know if I'm explaining it well but it made it to where the tail Chuck can move left and right while staying in sync and using only one motor no 3D printer no nothing I built it with two wood lathes the only problem I had was my truck size I didn't have a big enough inner diameter but I made it at 16 and I had nothing but hand tools if I did it today I definitely do the truck different but I've not seen anybody connect both chucks the way I did so id figure I'd mention it
Tube dimensions are generally tighter than pipe.
As usual, I have a choice to be a maker or a patron. Maker it is.
"I have a choice to be a maker or a patron"
I hear you, absolutely choose maker whenever you have to choose.
Hi, what is it for the white plastic element that is suported with three screws on the aluminum dish ? Thank you !
11months later how is this lathe running im super interested in making one myself but using some rudimentry motors and gearing, i can work with stepper motors but dont wish too
Do you have any updates on this project? Would be curious how some of the parts stood up to long term use.
My next video will be about this. I ended up changing the chuck concept entirely, it's too complex to really do correctly without machining.
If you would like some kovar, copper, becu, aluminum 42, molybdenum or other stuff I might have, let me know. I have crates of it
The chain looks a bit sloppy, introducing hysteresis between the multiple claws. Meaning the glass tube becomes off centered.
reupload?
Yeah, I got some comments about quiet audio on the last one
You realize at the low speeds you're running the lathe at, there's hardly any centrifugal force on the chuck jaws.