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This is a discussion on mim parts within the SIG Sauer Pistols forums, part of the SIG Sauer Forum category; while i was at a gun show this weekend, some gun "expert"was next to me while i was checking out my MK25, and he said ...


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Old 07-28-2012, 11:59 AM   #1
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mim parts

while i was at a gun show this weekend, some gun "expert"was next to me while i was checking out my MK25, and he said SIG arn't what they used to be when they were built in Germany, he said now that they are built here they use all mim parts.i was just wondering how how true is this comment, or is it some EXPERT just jealous that i was getting a pistol he wish he had.
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Old 07-28-2012, 02:30 PM   #2
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There is nothing wrong with MIM, this is coming from a MechE, not bubba hotef at the gunshow.
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Old 07-28-2012, 02:48 PM   #3
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thanks ,thats what i thought.
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Old 07-28-2012, 03:10 PM   #4
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MIM is a cost saving measure and can even produce complex parts that cannot be made by other methods. If there are two identical pieces and one is forged and the other is MIM, the forging will be marginally stronger. So naturally, people automatically think forging > MIM. What they don't realize is that engineers obviously take this into consideration when designing a part. They may add 1-2% more material to the overall dimension, or use different geometric shapes to make the part stronger, or the difference in strength might not even matter at all to that particular part. It is all contextual.
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Old 07-28-2012, 04:14 PM   #5
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Haters gotta hate...

Bill
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Old 07-28-2012, 04:21 PM   #6
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Quote:
Originally Posted by arclight610 View Post
There is nothing wrong with MIM, this is coming from a MechE, not bubba hotef at the gunshow.
Don't you mean Bubba Ho-Tep ??
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Old 07-28-2012, 04:26 PM   #7
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ALL the non custom gun manufactures have gone to MIM parts. MIM parts are like any other part - if they are done well they will work well and be reliable.

Glock started using a poorly designed a MIM extractor in their pistols not too long ago and there were a LOT of complaints on the forums about that including poor ejection and ejection to the left. Supposedly they have remedied that now.

I would NOT hesitate to buy a new MK25 for a second if I wanted a new P226.
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Old 07-28-2012, 04:50 PM   #8
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sorry to show my ignorance here, but what is a MIM?
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Old 07-28-2012, 05:38 PM   #9
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Metal Injection Molding or Powder injection Molding. Powdered metal less than 10 micrometers in diameter are blended with a 25 to 45% polymer binder. The blend is injected into a mold at temperatures between 135 and 200 degrees C. The binder is either melted out or removed with solvent then the piece is sintered in a furnace at around 1375 degrees C. After initial setup, MIM is about 5x cheaper than a comparable machined part.

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Old 07-28-2012, 05:56 PM   #10
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some mim, not all
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Old 07-28-2012, 06:19 PM   #11
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Quote:
Originally Posted by bearone2 View Post
some mim, not all
As being cheaper? Yes, this is true. There are always exceptions to the rule, but I was just making a generalized statement. It depends on the complexity of the individual part.
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Old 07-28-2012, 07:57 PM   #12
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i'm aware, you covered the topic very well.
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Old 07-29-2012, 01:26 AM   #13
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Approximately, What year/years did the conversions start taking place?
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Old 07-29-2012, 05:27 AM   #14
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The BIG problem with mim are the parts made in China.The Recipe to cure them is VERY critica and the Chinese just do have that down pat.A classmate of mine has several places to make this in China and he is moving his ops back to the states mainly cause of quality control.That is another story. BTW he did not do gun parts,most were automobile related,rear view mirror brackets and similar items.
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Old 07-29-2012, 07:40 AM   #15
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Thanks for all the input , makes me feel better now
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