Not all mim is equal The alternative to mim parts in the past was machined parts from solid material Most manufacturers have figured that out now and it is a pretty well settled debate
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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.
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 Kimber and smith of certain eras were bad mim
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. 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.
When done poorly, or inconsistently, it gives mim technology a bad name and leads to broken or prematurely worn firearms.
Mim or no mim.a tisas 1911 weapon that shot 10,000 rounds with no issues has a lot going for it Heck, i got a taurus 1911 with over 30,000 rds 45acp shot throught it with no issues and i'm sure its full of either mim or dan wesson parts Likely quality mim parts if open minds exist on this mim subject. I'm wondering if there are any mim parts in the new mc operator
Regardless, should i or should i not worry, and why? Colt mim, in these limited applications, seems to hold up well Mim parts are used in many industries other than firearms Aircraft parts can be made by the mim process as well
