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Thanks Vegipete - I think we could compensate for a little backlash indeed. In between moves the extruder often executes a 'retract' move, briefly turning opposite of the driving direction to back...

Let me add some context - this will hopfully unlock imagination :)

Currently all 3D printers use one nozzle (with one polymer, but also one nozzle size). There are several designs out there with...

Hi - thanks for your link. I found Usovo all right. However they are designed for Proxxon / Dremel tools.

My application is slightly different, I'm trying to couple a stepper motor so I can...

Hello - I'm want to build a small ball gripper system to create a quick-connect torque transfer (maximum 1Nm at this point, so very small). I'm leaning towards using a ball gripper type as I believe...

Thanks!

I have been trying to come up with a purely mechanic system using the Tormach tool holder and a piston that pushes the holder out while belleville washer hold the collet in place.

But...

Bob,

could I ask you the approximative total dimensions? Seeing if it would fit on top of the mini-mill spindle that's already filled with the stock motor and the belt drive conversion...
...

Thanks!

Please keep the files coming, I'm building each part as I get the file :)

Pierre

Thank you so much for your help!

I'll arm myself with patience and try to do that well :)

Hello all,

since I got the minilathe I have always wished for a bigger and especially more rigid lathe. That I found a couple months ago, and I bought a very old lathe for near nothing.

I have...

Hi all,

still no time for pics, but as far as ballscrews go, we used a 3/8 for the Y with an extension to adapt to the bearings and the stepper. For Z it's a straight 5/8".

Pierre

I'll try to make some better pics and post them.

I talked of speed because the TR screws eat tons of power (efficiency of TR is 10% while ballscrews reach 90% +).
If you use Nema23 steppers...

Nice lathe! I especially like the bellows!

I just completed my (holefully) final mini-lathe conversion with the help of Mark and Sean (both on this Forum, they'll surely drop in).

We decided...

Sorry if this question is quite trivial...

Due to some problems I tore the mini-mill down and measured backlash after dialing it in.

I have measured 0.0060 (X), 0.0032 (Y) & 0.0009 (Z) in...

Hello all,

I've been playing around while I finished the mill. As I got a couple messages I thought I'd post the latest version I use.

It still has some 'bugs' but it works pretty well for me...

Hey Jon,

following this post with great interest :)

How's that design of yours coming along? Please keep us updated!

Pierre

Hi all,

I have had a defekt at the motor controller of my mini-mill. It now outputs only 9V where I should have 12V. I have not yet checked it thoroughly through but a new motor controller card is...

Hi,

I have been thinking about doing just that for the past two years :)

I mean, I have been hunting eBay for the parts.
Currently I have
- two THK HSR45 large 1m linear ways for the z
- one...

The more exact translation would that he considered the factory control a PITA at slow speeds and that the motor lacked power also at slow speeds, especially with the larger 4" chuck.
I have the...

Hi Sean,

I have been thinking the same as you. And upon researching I found that someone on a German Forum has done just that.

Here's a picture of how he's done it. He says he made the gears...

After quite a bit looking on the Internet and in various forums for a post processor for Mach3 for FeatureCAM I found nothing,
so I brewed my own one that works quite well including subroutine calls...