Cliff Posted May 19, 2015 Report Share Posted May 19, 2015 Lots of folks rely on UHMWPE for wear points and such. I've been looking into Delrin. It's really great stuff, Machines like a dream come true. It has excellent thermal properties in that it does not transfer heat very well at all. and will not soften until it hits about 130C which is way far past boiling water. It is biochemically inert and is a go to material for joint replacements. It has TEN TIMES the creep resistance of UHMWPE~!!!!! wow. Creep for those who don't know is the tendency of plastics ( and all other materials too) to move and deform under pressure ( or no pressure sometimes). Which Material is best for Wear resistance? It Depends Running against a smooth surface like machined steel or other metal Deltin is as good maybe better. In rough areas like where there's grit and nasty surfaces UHMWPE will do better. It one truly wants a bearing material the look to Rulon. But it doesn't machine so nicely as Delrin. Shatter resistance? UMHW is more shatter resistant, but it's pretty gosh darn hard to break Delrin. I may prefer Delrin for more things because it's performance in the shop will be as good as UMHW. but the machining characteristics are far, far better. Courtland and FlGatorwood 2 Quote Link to comment Share on other sites More sharing options...
Courtland Posted May 20, 2015 Report Share Posted May 20, 2015 Hey Cliff, what are you using it for? I am assuming the TS fence, but what part? Thanks! FlGatorwood 1 Quote Link to comment Share on other sites More sharing options...
Courtland Posted May 20, 2015 Report Share Posted May 20, 2015 Hey Cliff, what are you using it for? I am assuming the TS fence, but what part? Thanks! I'm thinking the slider buttons and such? FlGatorwood 1 Quote Link to comment Share on other sites More sharing options...
Cliff Posted May 20, 2015 Author Report Share Posted May 20, 2015 I bought a 2" diameter bar. Turned a little Wheel for my Fence. Then started reading about the material. I got Delrin because about a thousand years ago, when I was still working machine shops, I had a couple jobs cutting Delrin and found the stuff to be a sweet dream to machine so I figured it'd be nice to use to make a wheel. Turns out my memory was validated. the stuff is magical. Courtland, FlGatorwood and Gunny 3 Quote Link to comment Share on other sites More sharing options...
Kevin Beitz Posted December 9, 2019 Report Share Posted December 9, 2019 I cleaned out a machine shop this year. I got a ton of bar plastics. Wish I had a way to find out just what I have. Some bars is 6" dia. Mostly white some gray. Gunny, FlGatorwood and Cal 3 Quote Link to comment Share on other sites More sharing options...
Cliff Posted December 12, 2019 Author Report Share Posted December 12, 2019 On 12/9/2019 at 3:44 PM, Kevin Beitz said: Wish I had a way to find out just what I have. there is a dead easy way Get a known polymer of the sorts you believe yours might be that you want to test. Get just a wee skosh of the stuff from a friend or buy it Hold it in a tweezer and put a lit match to it , blow it out as soon as it smokes and sniff the smoke. NO TWO PLASTiCS SMELL THE SAME and you will never forget a smell. Cal, FlGatorwood and Gunny 3 Quote Link to comment Share on other sites More sharing options...
Kevin Beitz Posted December 12, 2019 Report Share Posted December 12, 2019 cough cough cough cough ..... Gerald, Gunny, FlGatorwood and 1 other 4 Quote Link to comment Share on other sites More sharing options...
HandyDan Posted December 12, 2019 Report Share Posted December 12, 2019 My experience is the white uhmw and the Delrin machine okay and the gray likes to melt when sawn. I prefer to use the Delrin. Gunny, Cal and FlGatorwood 3 Quote Link to comment Share on other sites More sharing options...
Cliff Posted December 12, 2019 Author Report Share Posted December 12, 2019 4 hours ago, Kevin Beitz said: cough cough cough cough ..... nope just a little sniff of a sliver of plastic. FlGatorwood and Cal 2 Quote Link to comment Share on other sites More sharing options...
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