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Overunity Machines Forum



Using CNC as a 3D Printer

Started by TommeyLReed, June 03, 2014, 09:58:22 PM

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CLaNZeR

#15
June 04, 2014, 05:44:33 PM
A couple of years ago I converted one of my CNC machines to a 3D printer and posted the step by step on my forums.

Your welcome to check it out.
http://www.ukcnc.info/forums/forumdisplay.php?8-RouterStrap-3D-printer-using-your-own-CNC-machine

Was a good way to get to grips with 3D printing and what is involved. Software/firmware has moved on a bit since then though.
You soon realise that converting a CNC machine can work, but so slow and noisy using ball screws. You will soon want to move onto rapid movements using belts.


Then moved onto dedicated prototype printer but using commercial linear components.
http://www.ukcnc.info/forums/dprinter.php

We use this prototype daily for printing stepper covers etc etc.

This year we are going to release a more compact design 3D printer and also a Scara Arm 3D Printer which is cool to watch.

Cheers

Sean.
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Marsing

#16
June 05, 2014, 01:51:08 AM
Quote from: MarkE on June 04, 2014, 05:00:40 PM
Yes you did.  How did someone manage to hook interrupt zero in a Windows machine?

AFAIR. the only way, he must deal with very ugly language, needs about 5-10 minutes each time to compile and test that driver (win-driver), also single space unseen from text editor can cause blue screen. "Windows Driver Kit" is free download from windows to experiment with it.  there is a tool included in WDK where we can see how many int0  fired in seconds, normally, it fires at 100 hz or 1khz, while when mach3 was running ,we would see 25khz or 30khz. i read about real time OS which maybe provide exclusive access to real time timing but never try it.

TommeyLReed

#17
June 05, 2014, 04:52:16 AM
My cnc is running on the Lenux system, I believe it's better then Mach3 on windows.

I would not have a problem with 3D printing.

Tom

MarkE

#18
June 05, 2014, 05:55:24 AM
Windows goes off with long delays so often and easily that it's pretty rough to do anything with it that can't tolerate multiple seconds of latency at least now and again.  You are a lot better off with any version of Linux.  There are real-time Linux distributions out there that can make Linux pretty tight.

memoryman

#19
June 05, 2014, 09:38:04 AM
Because Windows is not a deterministic system, Delta Tau and others use a separate processor on their motion control products. Windows is used as a HMI only.
I have Linux cnc installed but not used it.
There was a 'PC' based cnc by MDSI (bought up by Tecumseh) but it was more expensive than Delta Tau, Galil  and similar companies.
ASAIK, Mach3 is a fine product for all but high end machines.
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