crack checker
December 12th, 2008, 01:18 PM
#1
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crack checker
A friend of mine just gave me a present he picked up in a pawn shop.
The batteries are dead in my camera so I'll have to describe it.
Metal box contains Horse shoe shaped electro magnet, plastic bottle of power, perfume type sprayer with powder in it. No directions [of course]
Box reads 'Crack Checker" and says " Be sure all parts are free of oil and debris before checking for cracks."
Apparantly you spray the powder and hold the electro magnet find cracks.
Is this some kind of mangaflux?
Any help would be appreciated.
The batteries are dead in my camera so I'll have to describe it.
Metal box contains Horse shoe shaped electro magnet, plastic bottle of power, perfume type sprayer with powder in it. No directions [of course]
Box reads 'Crack Checker" and says " Be sure all parts are free of oil and debris before checking for cracks."
Apparantly you spray the powder and hold the electro magnet find cracks.
Is this some kind of mangaflux?
Any help would be appreciated.
December 12th, 2008, 02:31 PM
#5
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Join Date: Mar 2008
Location: North Ridgeville, Ohio
Posts: 422
I think you put the powder over the surface you want to check, go over the surface with the magnet. The powder will go to the cracks if their is any. I am not sure if you touch the surface with the magnet or hold it just over it.
December 12th, 2008, 05:53 PM
#6
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Location: West of Lubbock, TX
Posts: 188
Power up your electromagnet and place the poles on each side of the suspect area. Then "puff" the iron filings onto the head (for example) you are testing. The filings will stand up at the site of the crack, and make it very visible.
December 13th, 2008, 01:33 PM
#9
same but different
Join Date: Jun 2007
Location: Central Missouri
Posts: 2,880
Ha Ha!! Hmm..he means, where ever there is a plumber near by they are usually cracking a smile.....from the back side
Its not exclusive to plumbers, carpenters do it too, but they like suspenders so this kinda of thing does'nt happen. 
See where these threads go?
Hope you figure out the crack finder. And yes it could work on pipe too. Any metal thats magnetic.
Its not exclusive to plumbers, carpenters do it too, but they like suspenders so this kinda of thing does'nt happen. See where these threads go?Hope you figure out the crack finder. And yes it could work on pipe too. Any metal thats magnetic.
December 13th, 2008, 03:26 PM
#10
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[QUOTEYes it could work on pipe too. Any metal thats magnetic.[/QUOTE]
It might not work too well on a cast surface such as a manifold or the combustion chambers. The surface of a sand casting will be too rough and prevent the filings from standing up on the edge of the crack. It is generally a better idea to use a dye penetrant such as Zyglo on a cast surface.
It might not work too well on a cast surface such as a manifold or the combustion chambers. The surface of a sand casting will be too rough and prevent the filings from standing up on the edge of the crack. It is generally a better idea to use a dye penetrant such as Zyglo on a cast surface.
December 13th, 2008, 09:56 PM
#11
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Location: West of Lubbock, TX
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It might not work too well on a cast surface such as a manifold or the combustion chambers. The surface of a sand casting will be too rough and prevent the filings from standing up on the edge of the crack. It is generally a better idea to use a dye penetrant such as Zyglo on a cast surface.
December 14th, 2008, 10:54 AM
#12
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Location: Edmond, OK
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I beg to differ. It works very well on a cast surface, rough or not.
Last edited by Olds64; December 14th, 2008 at 10:57 AM.
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