Hi all. I have seen Sublime's design for a printable mini lathe on thingiverse - http://www.thingiverse.com/thing:9242 - and am quite impressed. It looks to me like it could be used for brass hot-ends and similar jobs. Have any of you built one? If so, any feedback? I'd like to try it, but it's a big enough project and I don't want to get stuck half-way through. There are 2 or demos of it working on Youtube (e.g. http://www.youtube.com/watch?v=c8oRp07HSIU ), but other than that there doesn't seem to be many reports on how the machine functions and how it fares with soft metals. Daid has converted the CAD models to Openscad files - http://www.thingiverse.com/thing:12472 - but there's no feedback on that at all. https://reprap.org/forum/read.php?1,153199,153199#msg-153199 Fri, 12 Jun 2026 22:27:59 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,153199,198207#msg-198207 https://reprap.org/forum/read.php?1,153199,198207#msg-198207 -------------------------------------------------------
> parts as long as you keep the work piece cool
> enough not to melt the jaws (I melted one set).

Maybe try printing those in Nylon?]]> SheldonE General Sun, 07 Apr 2013 19:55:58 -0400 https://reprap.org/forum/read.php?1,153199,197712#msg-197712 https://reprap.org/forum/read.php?1,153199,197712#msg-197712
Ill look at what Daid did, thanks for the info.]]> thecrazy General Fri, 05 Apr 2013 16:56:12 -0400 https://reprap.org/forum/read.php?1,153199,197660#msg-197660 https://reprap.org/forum/read.php?1,153199,197660#msg-197660 -------------------------------------------------------
> I allways wondered about this lathe... @sublime
> how accurate is this thing? could you use it to
> machine a hot end for example? or is its still
> more of a concept at this stage?

I machined a brass nozzle for a hotend back when I made it and it turned out ok. But my shafts were 5/16" in 8mm bearings which caused some wobble as well as my printed parts being a little rough. But with that said I think it could make some good parts as long as you keep the work piece cool enough not to melt the jaws (I melted one set). The part that is in need of the most work would be the tool holder. The one I made just held a 1/4" cobalt steel bit. Also I think Daid's version may be better because he increased the diameter of the guide rails which should make it stronger.]]> Sublime General Fri, 05 Apr 2013 13:42:25 -0400 https://reprap.org/forum/read.php?1,153199,197606#msg-197606 https://reprap.org/forum/read.php?1,153199,197606#msg-197606 thecrazy General Fri, 05 Apr 2013 08:45:40 -0400 https://reprap.org/forum/read.php?1,153199,197473#msg-197473 https://reprap.org/forum/read.php?1,153199,197473#msg-197473 -------------------------------------------------------
> Sublime Wrote:
> --------------------------------------------------
> A questions about the design itself, if you don't
> mind:
> I'm using your Three_jaw_chuck, why are the teeth
> (outside_jaw) sloped away?
> It barely gets a grip on anything by the very
> tips, and the piece being held tend to just slip
> off sideways.
> Would flat sides make more sense, or was there
> some trick or point to it?

Loosen the locking collar further so the jaws come away from the face. Then tighten the jaws against the object so they are flat before tightening the locking collar and the jaws will pull in tighter as you tighten the locking collar.]]> Sublime General Thu, 04 Apr 2013 18:47:49 -0400 https://reprap.org/forum/read.php?1,153199,197472#msg-197472 https://reprap.org/forum/read.php?1,153199,197472#msg-197472 -------------------------------------------------------
> Is the idea that you hook up a power drill to the
> mini lathe?
>
> If not what is the power source?

That is one way and the way the first video was done. The rest of the videos and the way it is still is using an old drill motor and a small belt I had lying around.]]> Sublime General Thu, 04 Apr 2013 18:45:10 -0400 https://reprap.org/forum/read.php?1,153199,197444#msg-197444 https://reprap.org/forum/read.php?1,153199,197444#msg-197444 -------------------------------------------------------
> feel free to post it wherever you like, just be sure to
> post it with a non-commercial license and post a
> link in this thread where to find the models.

Thanks.

A questions about the design itself, if you don't mind:
I'm using your Three_jaw_chuck, why are the teeth (outside_jaw) sloped away?
It barely gets a grip on anything by the very tips, and the piece being held tend to just slip off sideways.
Would flat sides make more sense, or was there some trick or point to it?

cobrageek Wrote:
-------------------------------------------------------
> Wow! I'm new to reprap and I think that is the
> most amazing thing I've seen printed yet. That is
> so amazing. I definitely need to print one when
> my mendel is up and running. Amazing.

I thought so to.
If it can be made usable and reasonably easy to reproduce, then this could be a jewel in the RepRap capabilities collection.

KeithSloan Wrote:
-------------------------------------------------------
> Is the idea that you hook up a power drill to the mini lathe?

Simply, yes.
There is a problem of holding the trigger, however, so if you have a spare motor laying around, then better to use that.]]> Artlav General Thu, 04 Apr 2013 17:05:23 -0400 https://reprap.org/forum/read.php?1,153199,197430#msg-197430 https://reprap.org/forum/read.php?1,153199,197430#msg-197430
If not what is the power source?]]> KeithSloan General Thu, 04 Apr 2013 16:08:36 -0400 https://reprap.org/forum/read.php?1,153199,197391#msg-197391 https://reprap.org/forum/read.php?1,153199,197391#msg-197391
Thanks for contributing such amazing things for the rest of the world to print :-).]]> cobrageek General Thu, 04 Apr 2013 14:14:07 -0400 https://reprap.org/forum/read.php?1,153199,197383#msg-197383 https://reprap.org/forum/read.php?1,153199,197383#msg-197383 Sublime General Thu, 04 Apr 2013 13:44:37 -0400 https://reprap.org/forum/read.php?1,153199,197355#msg-197355 https://reprap.org/forum/read.php?1,153199,197355#msg-197355
Artlav, can you please post a link to your thingiverse item once you post it with your improvements. I'd love any improvements.
-Bret]]> cobrageek General Thu, 04 Apr 2013 12:05:42 -0400 https://reprap.org/forum/read.php?1,153199,197302#msg-197302 https://reprap.org/forum/read.php?1,153199,197302#msg-197302 rhmorrison General Thu, 04 Apr 2013 06:37:57 -0400 https://reprap.org/forum/read.php?1,153199,197292#msg-197292 https://reprap.org/forum/read.php?1,153199,197292#msg-197292
I'm not too familiar with the code of conduit in this community, so what do you say about posting derived work?

Right now i'm in the middle of making the mini lathe, have some fixes for the Daid's whole and Sublime's Three_jaw_chuck files, and planning on making a detailed manual as i put it all together.

The changes i made:
-Fixed the STL files to be cleanly sliceable - there were various polygon issues in the chuck, resulting in inside-outside confusion.
-Made a warp-resistant version, for printing in ABS on sub-par heatbed printer.

Probably going to tweak something else, depending on how it would go.

So, would it be ok if i post the results on thingiverse/here, original credits included?]]> Artlav General Thu, 04 Apr 2013 05:50:18 -0400 https://reprap.org/forum/read.php?1,153199,172513#msg-172513 https://reprap.org/forum/read.php?1,153199,172513#msg-172513
Thanks Sublime,

I never suspected a zipped file within a zipped file.

I have all of the pieces now,

Thanks for your generous help today.

Jon]]> Tekwizard General Fri, 21 Dec 2012 12:09:37 -0500 https://reprap.org/forum/read.php?1,153199,172431#msg-172431 https://reprap.org/forum/read.php?1,153199,172431#msg-172431 Sublime General Fri, 21 Dec 2012 02:49:34 -0500 https://reprap.org/forum/read.php?1,153199,172422#msg-172422 https://reprap.org/forum/read.php?1,153199,172422#msg-172422
Update: I just tried giving it .scad and it opened in openscad, but it won't render - it just gives errors and then stops. I can see references to the parts, but the listing of commands just freezes at the start. Is it my Openscad? it is the latest version...]]> Tekwizard General Fri, 21 Dec 2012 01:27:28 -0500 https://reprap.org/forum/read.php?1,153199,172421#msg-172421 https://reprap.org/forum/read.php?1,153199,172421#msg-172421 Sublime General Fri, 21 Dec 2012 01:03:02 -0500 https://reprap.org/forum/read.php?1,153199,172420#msg-172420 https://reprap.org/forum/read.php?1,153199,172420#msg-172420
I still don't have the files to print the chuck for this. I see on your Github that you switched to a different chuck that still is available for download, but I'm wondering if it mounts the same way as the original?

Thanks,
Jon]]> Tekwizard General Fri, 21 Dec 2012 00:57:13 -0500 https://reprap.org/forum/read.php?1,153199,172418#msg-172418 https://reprap.org/forum/read.php?1,153199,172418#msg-172418
Thanks by the way for sharing this lathe, it will work great for the lathe work that I need, which are those little parts that I currently have to cut round with a file or something...I know it's light duty, but I'm on a budget and this is better than trying to double duty my drill press.]]> Tekwizard General Fri, 21 Dec 2012 00:25:26 -0500 https://reprap.org/forum/read.php?1,153199,172417#msg-172417 https://reprap.org/forum/read.php?1,153199,172417#msg-172417 Sublime General Fri, 21 Dec 2012 00:12:55 -0500 https://reprap.org/forum/read.php?1,153199,172416#msg-172416 https://reprap.org/forum/read.php?1,153199,172416#msg-172416
I don't suppose you know what I can do about the tool holder, do you? I get a 404 error at Thingyverse on the one there and a search there just brought up tool holders for things like screw drives and plyers. If I knew how do design my own parts I'd draw something, but I'm still too new at this and haven't reached that point.

Jon]]> Tekwizard General Thu, 20 Dec 2012 23:48:59 -0500 https://reprap.org/forum/read.php?1,153199,172409#msg-172409 https://reprap.org/forum/read.php?1,153199,172409#msg-172409 Sublime General Thu, 20 Dec 2012 21:13:44 -0500 https://reprap.org/forum/read.php?1,153199,172405#msg-172405 https://reprap.org/forum/read.php?1,153199,172405#msg-172405 I can open the file (_assemble.scad.stl), in openscad, but the first part of the code is all red and in the lower right window I get this:

Parsing design (AST generation)...
Parser error in line 1: syntax error

ERROR: Compilation failed!


I also can't find any files for a tool holder, I get 404 error at Thingyverse.]]> Tekwizard General Thu, 20 Dec 2012 20:12:44 -0500 https://reprap.org/forum/read.php?1,153199,172402#msg-172402 https://reprap.org/forum/read.php?1,153199,172402#msg-172402 Sublime General Thu, 20 Dec 2012 19:51:13 -0500 https://reprap.org/forum/read.php?1,153199,172390#msg-172390 https://reprap.org/forum/read.php?1,153199,172390#msg-172390 www.thingiverse.com]]]> Sublime General Thu, 20 Dec 2012 18:13:24 -0500 https://reprap.org/forum/read.php?1,153199,172388#msg-172388 https://reprap.org/forum/read.php?1,153199,172388#msg-172388 www.thingiverse.com]

Sublime repo: [github.com]

have fun!]]> nic0laz General Thu, 20 Dec 2012 18:02:01 -0500 https://reprap.org/forum/read.php?1,153199,172370#msg-172370 https://reprap.org/forum/read.php?1,153199,172370#msg-172370 theodleif General Thu, 20 Dec 2012 16:25:55 -0500 https://reprap.org/forum/read.php?1,153199,172347#msg-172347 https://reprap.org/forum/read.php?1,153199,172347#msg-172347
Thanks,
Jon]]> Tekwizard General Thu, 20 Dec 2012 14:42:17 -0500 https://reprap.org/forum/read.php?1,153199,172288#msg-172288 https://reprap.org/forum/read.php?1,153199,172288#msg-172288 Sublime General Thu, 20 Dec 2012 07:23:57 -0500 https://reprap.org/forum/read.php?1,153199,172274#msg-172274 https://reprap.org/forum/read.php?1,153199,172274#msg-172274 Tekwizard General Thu, 20 Dec 2012 05:35:06 -0500