Hello, I'm looking to build a CNC machine specifically for larger sized 3D hardwood milling, with long bits.
And cut it FAST.
I was using a CRP4848 before, with a Hitachi router, but with the deep 4" cuts, and according to my newbie calculations I was running things fairly slow, not wanting to ruin the $200 wood slab or the bits.
I ended up having to sell that machine, and am wanting to build another one with this in mind.
I'm considering using a 2x4' CNC Router Parts PRO model this time around, as I liked my first one, but will likely get the smaller model to save space.
I'm also looking at getting a spindle, to have flexibility for slower RPM's and more power. But how much power?
My 2-sided large cuts were ending up at 10-20+ hours per side, and I'm hoping to shave that down considerably.
I'd really like to hear suggestions on what things are most important. Do I really need NEMA 32 stepper motors, or will NEMA 23 be ok? I was getting 500+ rapids with my 4 axis NEMA23 setup, but was limited in cutting feed rate by power/bit depth I believe (according tho the feed speeds I calculated with Gwizard.)
Do I need a more powerful spindle? I had 2 1/4 hp last time.
I'd also welcome suggestions on how to align and secure 2-sided 3d cuts. My last version was pretty shoddy and had to be adjusted once the cut was underway. Assume I'm cutting out of a bit 4" slab of wood.
Thanks!