Ultem Resin

[Bill Sutton@Accurate Machine]

Has anyone cut Ultem Resin.

If so how does it cut. What is is most comparable to. And feedback would be great.

 

Thanks

Bill

[Guest]

I've got a couple of Ultem parts still in my toolbox from previous employ.

 

I found in was abrasive on carbide, not real bad but it will wear if you are doing qty. I also found it did NOT like being drilled. I had deep holes to drill in it and even with short pecks and flood coolant, if I was not careful if would melt on the end of the drill. So there were a "few" programmed stops to get the chips off of the drills and clear th hole out.

[TR Mfg.]

+1 John. It is brittel if the parts are thin.

[John13]

If you have a lot of parts to do, diamond coated endmills are worth the cost. They hold up better than just carbide or any other coatings.

[Michael Sullivan]

It's a hard plastic too. likes to chip sometimes. like.....maybe acrylic.not quite as bad as G10.

I believe it is also glass filled epoxy resin.

[Michael Sullivan]

I meant to say abrasive, but not quite as bad as G10

[Arrowhead]

Found annealed Ultem much more stable to machine. Non annealed will move.

[PIERSON]

Look at this (http://www.boedeker.com/). Lots of info on all sorts of plastics. We machine all series of ultem.

1. We use 2/3 radial x .04 max depths for roughing leaving .02 stock all over.

2. Reclamp part lightly to semi finish .

3. Semi finish with fresh tool to leave .002 stock all over.

4. Finish with fresh tool using 2 to 3 spring passes on the walls only.

 

Best advice I could give you about ultem is its alive. Meaning it moves all over the place.