This is not my project, but it is a good image of the issue I’m having. Is it possible to do rounded grooves like this without the “collar” around them? See just outside of the main portion of the groove is a secondary lip? It appears to be equal to half of the finish bit diameter. I don’t want that. Thanks in advance.
Yes, but you have to draw the rounded areas in as longer by the radius, then use the desired geometry to set things to the actual height, removing the extra rounding.
If you’ll post your file we can walk through this with you.
Here it is. I don’t particularly care about the ends of the grooves, more the longer sides.
test.c2d (628 KB)
If the black pockets are your design, draw in 2 rectangles that span the whole workpiece for your model.
Then offset the pockets inward 1/2 the diameter of the cutter you will use for the 3D machining boundaries.
Model the slots/grooves going all the way through
Use the offset curves as your machining boundaries
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Got it to work. Thank you.
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One further question. I’m trying to do this on an angle and it is not working. The subtraction of the large rectangle is askew.
test.c2d (396 KB)
What did I screw up?
I believe the problem is that the geometry extends beyond the 3D model, hence the mis-calculation.
If you use Boolean Intersection:
to get geometry which is w/in the area of the 3D model, then the subtraction will be more what is expected:
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