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Author Topic: Always Have to Scale By 645.16  (Read 1563 times)

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Always Have to Scale By 645.16
« on: October 03, 2013, 03:39:41 PM »
I'm helping my friend setup his CNC machine (5' x 10' from China), and we have it working, but we have to scale by 645.16 to make things come out the right size.  We also have to manually edit the G code to make the feed rate much higher (otherwise it barely moves).

645.14 is 25.4 x 25.4 (there are 25.4 millimeters in an inch).

The units are set to inches in both places (under settings it was originally set to mm).

The X and Y motors are set to 1267.34 steps per inch (approximately, I'm not at the machine right now).  The Chinese technicians said to multiply those by 25.4 to fix the problem, but when we do that the machine just makes a loud noise, jumps a small distance, and nothing.

Any suggestions?
Re: Always Have to Scale By 645.16
« Reply #1 on: October 03, 2013, 03:41:20 PM »
(Ignore this, I thought the quick-reply box was asking for an explanation of an edit, not a reply)
« Last Edit: October 03, 2013, 03:42:57 PM by Metzen »

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Re: Always Have to Scale By 645.16
« Reply #2 on: October 03, 2013, 04:29:12 PM »
You will also have to divide your Velocity and accel by 25.4.
Hood
Re: RESOLVED - Always Have to Scale By 645.16
« Reply #3 on: October 07, 2013, 09:21:24 AM »
Thanks, that worked great!