Machining PPS plastic

[GoetzInd]

We have some rather large and complex PPS plastic parts coming up. I don't have much experience with this stuff (other than one small turning part) and it is really pricy so I was wondering of any tips or suggestions anyone might have. Turning, milling, tapping. Thanks.

 

Mike

[Tim Johnson]

It machines rather easily and holds tolerances nicely but loves to hang on to machined in stress. If you have experience with unfilled PEEK use approximately the same parameters but you don't have to worry about growth issues.

[Josh T™]

+1 to comparing to PEEK

 

We machine PEEK all the time here. It's free machining and holds tolerances well. PPS should be very comparable. Most of the time we are machining injection molded bearing cages and have had no issues. We typically use uncoated endmills/drills with this stuff. Believe it or not PEEK tends to stick to TIN coated tools.

 

HTH

Josh

[Cad-Camr]

One of our customers switched from Westlake PVDF to PPS and it was much better to machine and fairly stable.