im making a prototype of an invention and i will be machining the parts with a lathe. the plastic should be soft and not brittle. Delrin, acrylic, and teflon ptfe rods are NOT an option. Unless otherwise convinced. dimensions for the parts are 21mm in Diameter so a 1" Diameter Rod will be acceptible.
2007-01-15 10:28:29 · 4 answers · asked by jlp.media 3 in Science & Mathematics ➔ Engineering
Cast epoxy resin will work well for this. You need a thin epoxy that pours and levels well. You might go to either of the websites below are see what is available. Use a slow hardener to give the mixing air time to rise and dissipate. You could cast this in a paper tube to the length you need plus some, square it off with a band saw, center it and machine it using either metal or woodworking tools.
www. systemthree.com
www.westsystem.com
2007-01-15 10:42:15 · answer #1 · answered by Flyboy 6 · 0⤊ 0⤋
I suggest UHMW Polyethylene or Polypropylene. Pretty inexpensive and machines eaisily. ABS or PVC may also work for you. Most supply house carry these. McMaster-Carr carries also. Depending or the volume requirements or future needs injection molding might be a better option.
2007-01-15 21:15:46 · answer #2 · answered by markmold 2 · 0⤊ 0⤋
Soft plastics are difficult or impossible to machine, but you can get a reasonable amount of ductility in a machinable plastic, if that's what you mean.
Depending on your requirements, some grade of nylon may work.
2007-01-15 20:07:24 · answer #3 · answered by injanier 7 · 1⤊ 0⤋
Have you considered using a thermoset?
2007-01-15 18:41:22 · answer #4 · answered by Jess4352 5 · 0⤊ 1⤋