Farm Equipment - Poor Mans Magnaflux

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Poor Mans Magnaflux

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=46271
Printed Date: 30 Apr 2025 at 5:32am
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Topic: Poor Mans Magnaflux

Posted By: David Maddux
Subject: Poor Mans Magnaflux
Date Posted: 26 Feb 2012 at 9:20am

I thought I would share some info that was given to me from an old Hot-rodder friend of mine. To make a cheap magnaflux, start with a bottle of Seven-up, An Alka- Seltzer tablet, and a bottle of iodine. He says that the carbonation will keep the iodine suspended until it dries, then the iodine will mark where the crack is. Anyone else ever hear of this? Dave.

Replies:

Posted By: BrettPhillips
Date Posted: 26 Feb 2012 at 10:39am

The original dye penetrant inspection method as used by railroad shops in the steam age went something like this:

1.) Wet the part to be checked in light oil or diesel fuel, allow to penetrate for 1/2 hr or so.

2.) Dampen (do not soak) a clean lint free rag with lacquer thinner and wipe (do not scrub) all oil from surface of the area being inspected.

3.) After all traces of thinner have evaporated, cover the surface with a thin coating of chalk dust or talc. Wait 10 minutes or so, then look for wet areas in the dust. Porosity or cracks will show up as wet spots.

Posted By: CTuckerNWIL
Date Posted: 26 Feb 2012 at 12:26pm

We used dye penetrant in the machine shop for checking cracks. A kit with cleaner, penetrant and developer cost about $25.
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