BobCAD EXTENDED BOUNDARY HELP

**robscholl23** · 12-09-2020, 08:17 AM

I was wondering if anyone would be able to help me out with this problem I am having 3axis milling using Bobcad V27. I attached an image for your reference, the face that is in question is the one i marked, I was curious if there was a way to extend the boundary/geometry for this application because how it is now the end mill does not go past the edge of the face so it leaves a little step on the bottom edge off the part, any thing helps i appreciate it!

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**aldepoalo** · 12-09-2020, 02:29 PM

1) save the file as a new file name, this way any changes you make do not effect the original file.
2) Extract edges for the top surface of the blade.
3) Create a UCS that aligns to the geometry
4) create an offset profile of the surface boundary for how much you want to extend the cut
5) use that wire frame to create a surface
6) select the new surface as your drive surface for your toolpath

Bottom line BobCAD's toolpath is being driven by the selected geometry. Make adjustments to the geometry changes where the toolpath with go.

If you would like to see a step by step example of this, send me your file and join the BobCAD After Dark Facebook Group, I'll do a live video on your file tomorrow. ( shown in V33, but much of the workflow will carry over to V27 )