Posted: 7/27/2013 6:00:02 PM EDT
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I have a nice looking Model of 1911 U.S Army slide that I want to use on a project gun for my son and grandson. It's passed a close visual inspection for cracks, but I wondered if some sort of non-destructive metal testing is possible (at a reasonable price) or even necessary. This will not be any sort of hard use gun. probably no more than a couple hundred rounds a year, if that much. Both of us have other 1911's for that.
It's intended to go on a Caspian Classic frame with custom SN, retro-style sights, original GI NM barrel/bushing, wide spur hammer, long trigger, etc. I really don't want to just pick up one of the more recent Colt repros and give him that. |
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Go to your local tech school and in either the machine tool program or the welding program they will run a Dye-penetrant test and see if there are any surface cracks your eye cannot pick up. Probably do it for a box of doughnuts.
Or as DasRonin says, Magnaflux which any fab shop of decent size can do for you. |
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Quoted:
I would just shoot it. If it cracks, stop shooting it. Well, I'd rather not invest in the sights and the engraving if it has an existing crack that hasn't been discovered with a close visual inspection. I understand that there are no guarantees that a crack won't develop in the future. |
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Quoted:
Well, I'd rather not invest in the sights and the engraving if it has an existing crack that hasn't been discovered with a close visual inspection. I understand that there are no guarantees that a crack won't develop in the future. Quoted:
Quoted:
I would just shoot it. If it cracks, stop shooting it. Well, I'd rather not invest in the sights and the engraving if it has an existing crack that hasn't been discovered with a close visual inspection. I understand that there are no guarantees that a crack won't develop in the future. If you don't mind me asking, what are you planning to do again? Are you replacing the original (retro) sights with retro-like sights? What engraving are you planning? |
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Quoted:
Go to your local tech school and in either the machine tool program or the welding program they will run a Dye-penetrant test and see if there are any surface cracks your eye cannot pick up. Probably do it for a box of doughnuts. Or as DasRonin says, Magnaflux which any fab shop of decent size can do for you. Magnaflux is a brand name, not a type of inspection. Personally, Id do a fluorescent penetrant inspection over mag particle on a 1911 slide. |
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Quoted:
Magnaflux is a brand name, not a type of inspection. Personally, Id do a fluorescent penetrant inspection over mag particle on a 1911 slide. Quoted:
Quoted:
Go to your local tech school and in either the machine tool program or the welding program they will run a Dye-penetrant test and see if there are any surface cracks your eye cannot pick up. Probably do it for a box of doughnuts. Or as DasRonin says, Magnaflux which any fab shop of decent size can do for you. Magnaflux is a brand name, not a type of inspection. Personally, Id do a fluorescent penetrant inspection over mag particle on a 1911 slide. True enough about Magnaflux . just so used to calling mag particle inspection by that name since our equipment is by that company. Personally I would give it a once over with a good loupe and make the call. It is just a 1911 slide after all. |
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Quoted:
If you don't mind me asking, what are you planning to do again? Are you replacing the original (retro) sights with retro-like sights? What engraving are you planning? Quoted:
Quoted:
Quoted:
I would just shoot it. If it cracks, stop shooting it. Well, I'd rather not invest in the sights and the engraving if it has an existing crack that hasn't been discovered with a close visual inspection. I understand that there are no guarantees that a crack won't develop in the future. If you don't mind me asking, what are you planning to do again? Are you replacing the original (retro) sights with retro-like sights? What engraving are you planning? I'm going with something similar to the old King's "Hardball" sights, GI-style but a little taller, and some modest scroll engraving behind the cocking serrations and aft of the muzzle. |
| Penetrant will not work for sub surface detection. Mag Particle isn't the greatest either. The only NDT options for subsurface detection is Ultra Sound or x ray. You can contact Con-Am inspection in Columbus Ohio if you want the part UT'd. I wouldn't worry about it myself. Ju |
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Quoted:
Penetrant will not work for sub surface detection. Mag Particle isn't the greatest either. The only NDT options for subsurface detection is Ultra Sound or x ray. You can contact Con-Am inspection in Columbus Ohio if you want the part UT'd. I wouldn't worry about it myself. Ju UT would be a PITA, if you want subsurface on something like this you want eddy current. |
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Just buy a new slide if you are concerned. All the testing you would have done are only indicatiors that nothing showed during that test at that time. Buy new and build as you like.
PT- surface only MT- surface and some subsurface xray- can show cracks depending on technique UT- difficult with all the shape and machine work And that is all before you fire it and then wonder if anything did happen. |