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VIDEO: Plastic Muzzle Brake Test!........IT WORKED!?!?


Fitty

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Hey Fitty, thanks for the post. It's Poly-ETHYL-EEN. That is how you pronounce polyethylene. HDPE can be found in many densities. It does begin to deform at low temps though, and anything that impacts it at high speed can cause it to melt under the pressure. Some extrusion of HDPE has been possible with minimal barrel heating when a considerable amount of pressure has created the heat. Generally though we use heat and extrude poly at 400F. It is workable at 360, but 100 gives it better flow and draw down for our application.

JZ

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Hey Fitty, thanks for the post. It's Poly-ETHYL-EEN. That is how you pronounce polyethylene. HDPE can be found in many densities. It does begin to deform at low temps though, and anything that impacts it at high speed can cause it to melt under the pressure. Some extrusion of HDPE has been possible with minimal barrel heating when a considerable amount of pressure has created the heat. Generally though we use heat and extrude poly at 400F. It is workable at 360, but 100 gives it better flow and draw down for our application.

JZ

Thanks for making me feel stupid lol.......Its just an experiment and I think it will do ok when I redesign it. We will see though.

Someone from another forum was kind enough to send me some Torlon to make a brake out of. That stuff is too expensive for me to mess up on so Im dialing it in with the cheap stuff lol.

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Oh, now I have to google something else lol! What are you milling on?

Just looked it up. Seems after milling it you can post cure it at 260 to gain serious strength. Stuff sounds like it might be the ticket.

JZ

Edited by JimmyZip
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Oh, now I have to google something else lol! What are you milling on?

Just looked it up. Seems after milling it you can post cure it at 260 to gain serious strength. Stuff sounds like it might be the ticket.

JZ

Did you look at the price though? ...lol I know Torlon would work but it WAY TOO expensive to be a realistic production material.

Im using a Haas tool room lathe and Haas machining center.

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