Frozen Stud Removal – Aircraft Dye Penetrant

[Bob Moseley (RIP)]

A previous post described a method of frozen stud removal utilising a product used in the aviation industry for identifying cracks in aircraft components. Enquiries with various agencies has revealed one such product available in Australia named “Sherwin DUBL-CHEK”. In Australian it is marketed by Aviation & Industrial N.D.T. Supplies of P.O. Box 33, Tyabb, Victoria, 3913. Ph. 03 5977 4088. Fax – 03 5977 4093. The mother company is Sherwin Incorporated of 5530 Borwick Ave, South Gate, CA (presumably California) 90280. Ph. (562) 861 6324 and Fax (562) 923 8370.

The products are:
* HM-406 Fluorescent Penetrant where black light is utilised to detect the flaws after treatment.
* DP-40 Dye Penetrant referred to as the “visible dye penetrant”.

The Managing Director of the company had never heard of this type of product being used to assist in frozen stud removal. I had the same response from various restorers.

One of my contacts many years ago had obtained a similar product manufactured by Dinol International – Hassleholm, Sweden – 0451-800-00. This came in the form of three spray cans containing a solvent cleaner, penetrant and dye respectively. There would be other manufactures around as well.

The only thing I can conclude is that it is apparent that these products have a high penetration ability thereby working better than ordinary CRC or Penetrene or similar products. I have all the Fact Sheets so if anybody requires further information I can fax them a copy.

Whether this works or is an urban myth can only be a subject of conjecture. I was initially sceptical of electrolysis derusting, but am now a devotee of the method.

Bob