[MrBean]

I have a belt driven X axis that can cut at 800IPM but it's pretty useless at that speed because my Y axis max cutting speed is 90IPM. Unless I cut a bunch of horizontal grooves I never see anywhere near 800. I leave it set ~120IPM.

Regards Terry.....

[Bloy2004]

This dual Y axis machine I have does 340ipm at night, but 320 during the day due to line voltage increase at night. the x does 400ipm, and the Z 240.
But this is cut back...as above, with a Makita router spindle, real usage is about 280 to 320 ipm for simple broad cuts...much slower for intricacy.

[MrWild]

Still building, but will be happy with 10ipm. Another poll on the same theme could be asked, "How accurate is your machine?" IMO 100+ipm don't mean didly if it is constantly .015 out of tolerence. I'm shooting for no more than+-.002. I think tight machines may be harder to build than fast machines. With little experience building (so far) I'm probably wrong and will find speed is an outgrowth of accuracy and vice versa. Don't seem likely though. Loose and slick with powerful motors can probably blaze with speed as the cut wanders all over the place.

[Jerry Dots]

My little router (20 X 48) can rapid @ 200 IPM and I cut balsa @ 60 IPM. Cut 1/8 plywood @ 20 IPM. Router bits are the limit on feeds. I use .050 carbide bits for cutting model airplane parts. They will break on the plywoos at speeds over 30 IPM and cutting balsa at speeds over 60 it fuzzes up and needs the fuzz sanded off.

[dannystooblue]

I have a bench mill that i have converted using gecko 320's and reliance S243's the a axis has a 10mm lead ball screw that i had belted to 3.4:1. the X-axis could easily run to 300 ipm after tuning but was lacking some in the torque area. the z-axis i had at 2:1 with 0.200" lead ball screw, it will move well at about 150ipm but needs more torque as well. all that said i am re-belting everything which will slow it to the 100-150 ipm range.

Danny

[Haydn]

I can run my diy machine at 13,500mm/min or 531"/min without stalling and with plenty of motor torque left. Can't go any quicker as I can only get this with 45k pulse frequency in mach with fixed 10x microstepping. 10mm pitch ball screws directly driven by steppers from homeshopcnc and gecko201 drives. Don't need to go any quicker as it would only wreck the ball nuts/screws. Typically runs at 3000-6000mm/min with wood unless its a small part. Rapids usually set to 8000mm/min.

[ame="http://www.youtube.com/watch?v=3_qdZB9iGhU"]YouTube - CNC Stepper Motor Demonstration[/ame]