Pearl M1a1 Thompson Question
Posted 02 February 2006 - 07:06 PM
Can anyone tell me about a Pearl Thompson, good, bad about the same as a WH M1?
What is the current value of a M1A1 built on a Savage kit?
Posted 02 February 2006 - 09:01 PM
Posted 04 February 2006 - 01:28 AM
I've seen a posty built from 6061T6 that has over 10K round through it and looks great. The 28's wouldn't like that though....
As for the Pearl tommies. They are all M1A1's and the castings were very well done from quality steel.
Thats it from here....
Posted 05 February 2006 - 12:13 AM
Posted 05 February 2006 - 09:22 AM
The use of injection molded wax or plastic forms allows easy mass production of very complex parts and the very fine grained plaster makes extremely fine surface detail possible as well as keeping distortion to a minimum. Unlike sand or some other casting methods the plaster is a strong medium which won't "move" when bumped, banged or due to the weight of the casting metal. This and the fact that there is little change in size due to heat makes near net shape castings that need very little finish work. The Pine Tree Castings division of Sturm Ruger makes almost all of the parts for their receiver and mechanics in this method. I think barrels are about the only metal part they don't cast.
Thats about it. Do a google search for " Lost wax casting" or "Investment casting" to get more detail.
Hope that helps
Posted 06 February 2006 - 02:39 PM
Posted 06 February 2006 - 09:53 PM
Posted 09 February 2006 - 11:09 AM
Posted 09 February 2006 - 11:34 AM