How to cast and mold melt plastic to a shape and design you want?

Question

I am trying to use plastic for a cheap and easy casting but I'm having trouble in molding it to any given shape. I'm trying to see if I can make a spark plug and want to cast out a model for measuring and getting a feel for the design. But I never worked with plastic. I'm using HDPE plastic.

Can you be more specific about the trouble you're having? Describe your current process, what the end result looks like and how it doesn't meet your needs. — Air, Dec 05 '16 at 22:46
Any reason you don't just get yourself a RepRap and print a few? — Carl Witthoft, Dec 06 '16 at 14:44
For general information and tips, one could search YouTube for DIY casting. There are great videos for steel/iron casting, and I'm sure there must be several for plastics. — Gürkan Çetin, Dec 07 '16 at 18:09

score 1 · Answer 1 · answered Apr 18 '18 at 05:09

1

I used to make candles in the wet sand by drawing out what I wanted it to look like. I guess it would work with plastic and then grind the sand out of it.

answered Apr 18 '18 at 05:09

How to cast and mold melt plastic to a shape and design you want?

1 Answers1