Not all mim is equal Most manufacturers have figured that out now and it is a pretty well settled debate Mim has come a long way The parts you are replacing the mim with may be worse than the mim Many of the best knife steels, like those from crucible steel, are mim. Mim is powdered metal pressed into near net shape, then sintered (heated enough to melt only the outer surfaces of each powder particle) this precludes grain growth throughout the finished part, effectively creating a part that has grain refinement without multiple grain reduction stages through rolling, extrusion or forging.
Mim parts are similar except they are injected with pressure to hopefully fill any voids which could potentially be caused by casting Neither casting or mim is perfect but if done right they are very good. How can i tell if my tisas has mim parts Of my four tisas models three of them say tisas knoxville tn and one says sds knoxville tn I suspect that the model labeled sds still has mim but i am not sure. Mim, forged, machined, cast—they can all be done right, and they can all be done wrong
Metal sintering reduces dimensions and still requires deep surface hardening Do it wrong, and you get undersized dimensions on some parts and thin surface hardening that wears uncommonly fast. Colt mim, in these limited applications, seems to hold up well I’ll necessarily start off by saying that i’m not trying to start another “mim vs I’m just curious about something I'm wondering if there are any mim parts in the new mc operator
Regardless, should i or should i not worry, and why? To me part of the allure of a quality firearm is the quality That if you really take care of the firearm you can keep it for generations Today though many firearms are made with mim parts and other cheaper material and effectively this means they eventually wear out
OPEN
