Scaling problem

Hey everyone!

I sure do hope someone could help me with my problem, I am a total beginner after all. I just built my cnc routing machine. I am (trying to) work with Aspire and Universal G-code Sender. So the problem I have is that I draw a simple shape such as a square to be 50mm by 80mm and then the machine creates a square like 3mm by 2mm. I do not understand where the problem lies because I have already calibrated the machine in the x, y and z directions. Any help will be appreciated greatly!

Many Thanks
Kevin

Sounds like you have an inch-mm conversion issue between Aspire and UGS.