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SIZE
« on: May 19, 2013, 08:55:42 AM »
I was using Vcarve to import a picture in and make a vector
turn it into a dfx to import into Mach3.
Using Mach3 to import the dfx vector saved from Vcarve.
Then I created  a gcode. in Mach
I did all that it created a gcode which ran.
Except the size was way off from the size I created in Vcarve.
I'm still learning the in's and outs of this.
Only finally got Mach3 to recognize my machine and computer
to let Mach recognize my machine and visa versa,
only 2 days ago.
 I have a long way to go.
So bear with me as I struggle to learn it.
I work in inches Mach is config in inches.
Quick question is, in case I switched from metric to inches after I set MACH
to metric in the original config. which I do not think I did.
The vid said not to do it but it can be done.
How does one do it before I reload Mach and start and config again.??
Thank you
Re: SIZE
« Reply #1 on: May 19, 2013, 08:59:34 AM »
Second Message I left out.
I set Vcarve to a 5" on the X AND 4" on the Y
When Mach cut the plexiglass which it did the size
came out on the plexy 1" x 1" aprox.
It all sized down

Offline Tweakie.CNC

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Re: SIZE
« Reply #2 on: May 19, 2013, 09:16:38 AM »
Quote
Quick question is, in case I switched from metric to inches after I set MACH to metric in the original config. which I do not think I did. The vid said not to do it but it can be done. How does one do it before I reload Mach and start and config again.??

Do not change the Mach3 configuration to switch between Inches and Millimetres use the G20 / G21 commands, as appropriate, at the start of your GCode file.

Quote
I set Vcarve to a 5" on the X AND 4" on the Y When Mach cut the plexiglass which it did the size came out on the plexy 1" x 1" aprox. It all sized down

Could it be that you have set your 'Steps per Unit' incorrectly in Motor Tuning ? (if you input G0 X10 in the MDI screen does the X axis move exactly 10 inches ?)

Tweakie.
 
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.