As I’m dialing in tool paths and seeking to improve reproducibility and all that good stuff, I’ve started wondering about both maximum feed rate and acceleration.
Do any of y’all have thoughts on how to dial this in apart from:
That’s what id do. I’d put the spindle in manual mode with a fixed feed rate and increment it till i get a good chipload. This can be done by sight or sound. Make a note, then put it in a chipload calculator then adjust the feed and speed to x ipm at 18k. I’ve done this exactly 3 times because i wasnt happy with mfgr recommendations.
Because theres a difference between mdf and white oak
Personally, i don’t bother with material A/B ect. I may adjust the rpm in masso, but that’s rarely. 95% of my materials are cherry, white oak, red oak, walnut and various types of maple.
I’ll stick to manufacturers recommendations 95% of the time, especially if i have good chipload, even if it’s slow… like my Whiteside 1372 bowl bit which has a feedrate of like 80ipm. I’m not big on running it as fast as i can because unless I’m doing 3d work, a project takes me 10 min or less, but that’s what my workload is. Since upgrading my machine, it’s been tough for me to get 20+ minute projects… again except for 3d which takes 4-14 hours.
2 flutes you’ll run slower than 3 flute, and o flute (if you run it) slower than 2 flute.
If it’s like my tbn, I’ll run those at like 200/200 18k because their not taking much material, and with any light workload bits like that, I’ll do the same… if they have potential for a profile cut (even initial pocket cut) I’ll stick to mfgr settings.
Your bullet point about binary, i was assuming was linked with the first bullet point