[nicubila]

Hi

I am doing a lot of inside cutting of circles in Dibond, and because the bit slows down then stops at 360 degree when finishing the circle, there is a lot of material left hanging at the end as higher rpm with close to zero feed rate mets the plastic.
Is there a way to go longer than 360 so I can clean this?

Thanks
Marius

[Pattie]

We have found that the best feed rate for a STEPCRAFT 2 series CNC machine using a STEPCRAFT HF-500 Spindle is 30 mm/sec and using a KRESS 800W or MM-1000 Spindles, we found the best feed rate to be 38 mm/sec. A good rule of thumb would be to set the feed rate on the lower end and then you can always increase the speed using the F-SET setting in UCCNC while the job is running. If you determine that you are getting the best results with an F-SET of 120% then you can simply multiply the current feed rate x 120% and make that the new feed rate for that tool. Then the next time you run a job, leave F-SET to 100%. Of course, on the Kress or MM-1000 you can simply make RPM adjustments by turning the speed control knob while the job is running.