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That’s how it’s done!!

I dabble in material selection of injection molded resins; the discussion is pretty boring without the excitement of destructive testing! Some things you can’t quantify either…some materials stress whiten or have things happen because of the part design.
So the actual testing in the application is still very important.

This is a fun discussion because it goes back to a time where the material supplier was an OEM and there wasn’t hundreds of other petrochemical suppliers battling to sell a less expensive off-name commodity with similar specifications.

GoMachV wrote: ↑Mon Dec 23, 2024 11:16 am The material they ended up with was the one that survived the dumpster test haha.

Tamiya must have used the other materials. The ones that should have been in the dumpster.

GoMachV wrote: ↑Mon Dec 23, 2024 11:16 am Im sure modern materials have advanced, but back in the day Daryl said they would mold a few different materials and take the wheels out back to the dumpster and chuck them as hard as they could to see if they could get them to break. The material they ended up with was the one that survived the dumpster test haha.

As a product design engineer: love this.