Originally Posted by
The Engine Guy
An stl file is a Mesh file and in BobCAD you can not edit/modify/toolpath that type of file, you will need to find an online (free) software that will convert the stl file to say a step or iges file, those you can work with in BobCAD.
As for scale, it may just be the original file is Metric and you are set to Inches or vice versa, either multiply one by 25.4 or in the opposite divide the other by 25.4 etc, etc, if that doesn`t work then you will have to find the exact difference and then after you get your step/iges file scale it to the correct size.
Regards
Rob