This is a discussion on The ''Friday Night'' gun - or lemon. within the General Firearm Discussion forums, part of the Related Topics category; Here's my $ 0.02 on the subject. In any manufactured part, the designer/engineer allows for tolerances for the finished part. When thousands (or more) complex ...
Here's my $ 0.02 on the subject. In any manufactured part, the designer/engineer allows for tolerances for the finished part. When thousands (or more) complex parts are produced, QC uses Statistical Process Control to predict when the tooling and/or machinery used in the mfg process must be replaced or adjusted. Although these parts meet dimensional criteria, when they are assembled with other parts into complex assemblies (ie weapons, vehicles, etc) those tolerances can accumulate, described as "Tolerance Stack Up". This "Stack Up" can prevent parts from fitting properly into the assembly causing the problems everyone has been talking about.
Closing the tolerance allowance solves the fit problem but slows the manufacturing process therefor increasing the manufacturing cost. I've handled two middle of the road brand 1911 clones from the display case of a local gunshop. Both were identical models, when I held and shook one, the slide rattled, the other was tight. The shop owner sent the "rattler" back. But the "rattler" probably was a serviceable shooter.
Originally Posted by F350
Blue Oval Boy :chairshot
Don't worry we won't hold that against you (for now)