View Full Version : Help with speeds and feeds

05-31-2009, 01:52 PM
I'm new to the Bot and about to start cutting. I have two questions I could use your help with. I have a 4x8 prsstandard with a 4HP spindle assuming that will make a difference.

1) First question. Is there a "master" speeds and feeds reference available?

2) Second question. The cut that Scott Cox made on the 3/8" Acrylite GP looks like a good place for me to start for a quality finish. I'm OK with a slow speeds to start.

My question on this is how do I convert the following speeds and feeds into Shopbot Control v3 commands?

1) Peeled top paper and V-carved the Arial text at 18Krpm/2ips,
2) Straight plunge into 1/4 inch holes with a 1/4 inch upcut spiral bit at 10Krpm/0.1ips,
3) Cutout using 1/4 inch upcut spiral at 16Krpm/1ips with a stepdown of .1 per pass.

05-31-2009, 02:30 PM
I've run into another question, is there a cross reference for the common uses for each of the bits in the "bit kit" that comes with the Bot?

05-31-2009, 04:44 PM
Here are some good links to look over they will get you thinking about how to figure your speed & feed. There is a fair amount of experimenting to do to dial everything in.

Try to find a recomeded milling speed for the material you are working with. Then you need to find a bit and the recomended chip load from there you can use the calculator and play with speeds. Have fun.