Quote Originally Posted by Notavirusalso View Post
when i get the chance and its a perfect fit I would say An interference fit .. but only engineers know what that means so i will just say a friction fit ...
I find with the heat an expansion box is a better model as with to much friction you can get seizure of the piston

Ive completely forgotten what this thread is about though i presume its in the Hobby,s 101 section