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Which parts are MIM?
10/25/2009 11:07:07 PM
I have some Kimbers and some Springfields and some Para-Ordnances. I was thinking about replacing MIM parts with "real" parts. Which parts are MIM? Is there a chart or something that shows which parts are MIM?
Thanks.
Thanks.
10/26/2009 1:31:35 AM
There are usually little seams, but that doesn't mean anything MIM g2g. Do the reading.
10/26/2009 1:55:05 AM
MIM is only about 93% the density of steel.
You could try using a scale and oil displacement to find the density.
This should give you a good second opinion after using the 'look for the seam' method.
You could try using a scale and oil displacement to find the density.
This should give you a good second opinion after using the 'look for the seam' method.
10/26/2009 2:44:47 AM
I think it depends on the particular model. Different models will have different MIM parts. MIM is not all bad if it done right, if it is not you have crappy parts. The seam method is not a sure thing though. If the parts are trimmed good when they come out, and then blasted and machined, and or possibly coated you may never see a seam.
10/28/2009 8:05:17 AM
There is one problem with the seam method. A lot of aftermarket M1911 small parts have been made by traditional casting methods. One thing I've noticed about some MIM parts is that they are slightly concave between the edges.
10/31/2009 6:17:53 AM
Here are some items I have run into in the past: barrel bushing,disconnect, sear, hammer, ejector, mag catch, sights, grip safety, thumb safety, ambi safety, main spring housing pin, slide stop, plunger tube, slide stop plunger, safety plunger, and extractor. I am sure there is something I am forgetting. Like I said earlier, it all depends on the process that the manfacturer has in place. I have heard that some jet turbines have MIMed blades in them, now that has to tell you something.
12/20/2009 9:29:52 PM
Originally Posted By shootingmonkey:
Here are some items I have run into in the past: barrel bushing,disconnect, sear, hammer, ejector, mag catch, sights, grip safety, thumb safety, ambi safety, main spring housing pin, slide stop, plunger tube, slide stop plunger, safety plunger, and extractor. I am sure there is something I am forgetting. Like I said earlier, it all depends on the process that the manfacturer has in place. I have heard that some jet turbines have MIMed blades in them, now that has to tell you something.
Here are some items I have run into in the past: barrel bushing,disconnect, sear, hammer, ejector, mag catch, sights, grip safety, thumb safety, ambi safety, main spring housing pin, slide stop, plunger tube, slide stop plunger, safety plunger, and extractor. I am sure there is something I am forgetting. Like I said earlier, it all depends on the process that the manfacturer has in place. I have heard that some jet turbines have MIMed blades in them, now that has to tell you something.
That I don't want to fly in a jet made by Kimber.
12/24/2009 3:32:21 AM
Originally Posted By shootingmonkey:
I think it depends on the particular model. Different models will have different MIM parts. MIM is not all bad if it done right, if it is not you have crappy parts. The seam method is not a sure thing though. If the parts are trimmed good when they come out, and then blasted and machined, and or possibly coated you may never see a seam.
I think it depends on the particular model. Different models will have different MIM parts. MIM is not all bad if it done right, if it is not you have crappy parts. The seam method is not a sure thing though. If the parts are trimmed good when they come out, and then blasted and machined, and or possibly coated you may never see a seam.
I usually notice a small dot or two on the parts that were MIM on my guns. Sort of the reverse of the raised spots you'd find on a typical case part. The suggestion of weighing and oil displacement might not be accurate either because of cast parts also being less dense than forged or milled. Less dense then even MIM parts.
Edit: Misquoting, mistyping, just a poor post overall. Hopefully fixed now.
