Old School Tech

Technology is nothing new, and not always better.

Archive for August 2011

Japanning Stripping

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What is japanning?

All of the eBay auctions of handplanes and antique handtools invariably state the percentage of remaning “jappaning” on the tool as part of the item description on the sale listing. Since I am re-building functional tools that should last well into the 21st century, I am more concerned with corrosion protection.

In any case it is an older form of enameling that powder-coat, lacquer, or epoxy has made obsolete.

http://en.wikipedia.org/wiki/Japanning

https://home.comcast.net/~rexmill/planes101/japanning/japanning.htm

I have found a paint/coating stripper that has some promise, RonJohn.  It is much less toxic than the methylene chloride that we are used to using, and it doesn’t evaporate as fast.

Materials used:

RonJohn stripper

Acid Brush

Written by sumtertisdale

August 27, 2011 at 19:44

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#1 “Daily” of plane japanning stripping.

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Raw video of japanning stripping of a Stanley # 3 and #65 plane.  I am using RonJohn solvent to strip the japanning.  Note that I have used a rag soaked with RonJohn to strip the japanning off of the #65.  I will let it soak overnight and we will see the results in the morning.

More research is needed on the composition of japanning; it is most likely a coal-tar based substance. It does not peel or bubble off like more modern enamels.  It breaks apart into little specks that can be brushed off with a toothbrush.

Written by sumtertisdale

August 27, 2011 at 15:25

Posted in Uncategorized