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Preventing hot tin from adhering to outside of copper pot during retinning

I have successfully retinned some of my copper cooking pots, on the inside. But sometimes tin gets over the edge and adheres to the (unfluxed) outside. Is there a product which can be applied to the outside to prevent tin from adhering? (I can't figure out why the tin adheres to un-bright, unfluxed copper. Flux fumes?) Thanks for helping me on this one.

Roger B. Hardy
Quirky retiree - Canterbury, Kent, United Kingdom
September 1, 2010

Chalk n water paste must be ok( or clay ).Try it first on some copper scrap.You can download/free/ 2 excellent old books on coppersmithing- www.archive.org/.Hope it helps and good luck!

Goran Budija
- Cerovski vrh Croatia
September 3, 2010

September 3, 2010

Sir:
Two items comes to mind: Silicon Sealer and Boron Nitiride.
Regards,

Dr. Thomas H. Cook
Galvanizing Consultant - Hot Springs, South Dakota, USA

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