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Unusual Mandrels


#1

This may seem like an odd request, but I’m looking for a triangle
mandrel in a large shape. I’ve tried Rio Grande, but they only have a
small one. Does anyone know of a source or can anyone make one for
me?

Feel free to contact me offline: tammy@digistar.com

Tammy Kirks


#2
but I'm looking for a triangle mandrel in a large shape. 

Hello Tammy,

You might want to try Contenti They have a triangular mandrel, item
320-685, with a 10 mm to 22 mm taper.

The Contenti Company

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Cheers,
Trevor F.


#3
... I'm looking for a triangle mandrel in a large shape. 

Hello Tammy,

I see that Otto Frei in San Francisco also has a large triangular
mandrel, Part number 143.064.

They don’t specify the taper min and max but if you look it up on
their website (http://www.ottofrei.com, you’ll need to use the
Advanced Search in order to search by Part No.) you’ll see that they
have a nice large picture of the mandrel which might be useful.

Cheers,
Trevor F.
in The City of Light


#4

Charles Lewton-Brain sells a book made to order for solving this
problem. The Recycling, Use, & Repair of Tools - Alexander Weygers
This is a great book I highly recommend it.

Unusual Mandrels in a triangular cross section can be made from old
triangular files. Get thee to a flea market or junkyard. Old files
can be found up to 12 " long. Find some one to anneal it and sand
the sides flush and smooth.

The recycling, use, and repair of tools
By Alexander G Weygers

http://www.ganoksin.com/jewelry-books/us/product/0442293577.htm

Manufacturer: Van Nostrand Reinhold Co
Release data: 1978

Robb.


#5

Thanks to everyone who responded to my inquiry about a large
triangle mandrel. Thanks to Orchid (and thanks Pat!) I was guided to
Contenti where I found what I needed. Also, thanks to Dave who
offered to make one for me. I’ll keep all the info as I’ll probably
need something else weird in the future.

Orchid is great!

Tammy Kirks