turning plastics

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I have used R2 carbides and they work well. I also like the skew for cleaning up. It works both as a cutter for smoothing and as a flat scraper to smooth any ridges.
I always sand the corners a little bit to cut out the shock of original cuts (I also do it for wood). First cut to round I always use a 1 1/2 roughing gouge kinda like a skew.
Everyone does it differently, but those are my tools of choice.
Important, make sure they are all sharp!
gordon
 
Square and round carbide, but I am a beginner (75 pens, mostly acrylic). I tried a real sharp skew three times and never get the hang of it. I am please with the carbide tools though.
 
I use a round carbide for roughing, and a radius for finishing. Occasionally, I use my skew on its side as a scraper for smoothing curves.
 
I use a roughing gouge and skew. There is no "correct" answer though. I would start with whatever you use to turn wood and modify your approach and technique as needed.
 
It varies with the blank. Some plastics/acrylics cut with a "butter knife". Some are extreamly chippy.

For the most difficult, the cup shaped carbide (hunter style) tools to a cylinder and rough size, then a blunt (short bevel length) skew used as a scraper.
 
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