Machsupport Forum

Mach Discussion => FAQs => Topic started by: Traxide on November 14, 2017, 12:37:43 AM

Title: Newbie running Mach 3 Software needs help
Post by: Traxide on November 14, 2017, 12:37:43 AM

Have built a CNC Router connected to a Desktop via Parallel port using mach 3 software running on Windows XP. Loaded Demo Gcode "Roadrunner" and everything works great, but the size of the routing is only 12mm x 12mm. What have I done wrong in the Setup.
 

Title: Re: Newbie running Mach 3 Software needs help
Post by: joeaverage on November 14, 2017, 02:36:47 AM

Hi,
I'm guessing that your machine is interpreting the Gcode as mm units when the RoadRunner (being a Yankee!) is in inches.

Try on the MDI screen coding G20 <enter> and run the code again. G20/G21 are used to allow the Gcode interpreter to use either inches or mm's as units.

Craig

Title: Re: Newbie running Mach 3 Software needs help
Post by: Traxide on November 14, 2017, 05:38:14 AM

Thanks for the information, I will try this tomorrow morning