I HAD BETTER COME CLEAN
I am trying to add a hot wire to my gantry to make aeroplane wings. I may have to go to other software but most of it is for 4 axis foam cutting machines.
I intend to manipulate the wire assembly to create tapers and such like. So I was looking for a short cut with Vectric software. Hears hoping,
I've manually cut a lot of foam wings for my scratch-built RC models - but that has been over 20 years ago. I made my own hot wire cutter using aluminum square tubing, springs, wires, screws, etc. and a homemade footswitch with a transformer from Radio Shack providing the voltage to the wire.
Conventional "old-school" was make plywood templates (polished, smooth edges) for the root chord and tip, affix them to each end of a foam block and draw the wire through the foam whilst resting the wire on the two end templates and regulating the heat of the wire (in real-time while pulling the wire) using the footswitch on/off.
If you've done this yourself, you know if it's a tapered and/or swept wing, it's a bit tricky to get the "feel" for drawing the wire over the templates (and through the foam) at the right speed. Too slow - the wire melts divots/lines in the foam...too fast, you introduce distortion into the wing contour. You also have to vary the speed at an angle (moving a little faster over the longer root chord template) so the wire exits the foam in a straight line at exactly the same time from both templates at the trailing edge of the wing.
I've never seen a commercial CNC foam cutter in-person. I would certainly like to see one set up specifically for cutting wings and learn how they work, how they get the wire temp just right, and how the angled speed compensation is made for tapered/swept wings between the root chord and tip ends.
I'm very interested in your plans to rig your CNC for cutting foam wings using 3 axes. Rooting for you!