Does anyone know if it’s possible in the Fusion360 → MeshCAM → Carbide Motion workflow to add a slotting cutter to create slight undercuts in workpieces?
I have a case where I need to make a coarse internal thread, similar to 3/4" NPT pipe. I designed so that I have about 0.95 revolutions of thread - just under one full turn. That means I can technically flip the workpiece and hit all surfaces with a “top down” view, if I approach from both sides. But the flip and re-registration are creating challenges, and even if I get them all worked out, they’re going to slow down the workflow considerably.
What I’d love to do is use a slotting cutter, or even a square endmill with significantly reduced shank, to hit these undercuts from the top only. My thread depth is only about 1.6 mm, so that’s the max overhang I will have.
I’m cutting in plastic, and plan to rough with a Type O to start. Stock thickness is about 15-20mm total, with the internal thread at about the 50% mark through the stock. Again, I have less than one full revolution of threads, so pitch and proximity of neighboring threads aren’t an issue.
Has anyone used a slotting cutter successfully on the Nomad3, and if so, are there special considerations when setting up the cutter in MeshCAM?