Yup, you missed it:Xxray wrote:I missed it, did someone suggest programming a low feed rate ?
"using Zenbot CNC 4X4 with Hitachi Metabo router 11 Amp
roughing using 1/4 end mill down cut at 100 FR and 100 Plunge rate
Finish toolpath using 1/8 Ball Nose at 100 FR and 100 Plunge rate
Profile toolpath using 1/8 End mill down cut at 50 FR and 20 Plunge rate
Notice he is using a 1/4 end mill at 100 IPM and also finishing with a 1/8 ball nose at 100 IPM.
Maybe that is as fast as a ZenBot can go ::::shrug::::?
The reason I made the comment is that quite often in this sort of thread I read how "the machine will never get up to full speed on 3D work. . . ." Well, that is not always true by a long shot. If you look at his part there are a lot of flat areas on it that the finishing bit has to traverse. If you look at the chart I included it is obvious that on a lot of those areas the machine could easily get over 100 IPM.
I can run my machine on 3D at a programmed 300 IPM rate. Even when I do detailed stuff I set it to that feed rate. It may never get past 150 but I sure as heck don't want to make sure it never goes over 100 IPM.