Plastic again

[NEW2007]

I had worked on plastic for three yrs.With some experience,but a lots of questions.

single o flute bit is good for a lot of company but never good for this one I work in last three yrs.Last month I joined to a large plastic company(with 12 cnc router).In this company 90 per cent part was done by single O flute (up-spiral)bit. In my old co. why it doesn't work?

I think it's base on feederate.Before my feederate is about200-300,but the new co, is about 120ipm.Any points?

I always try to get rid of small tool for plastic but the new workplace 90% was done by

less than 1/4" bits. confuse.....

Need some instruction.

 

 

Eric P