On 2017-01-15, J. Clarke wrote:

No. Casein is milk-based. Hard to find in the
market now but you can make your own. Formerly
(before WWII) was used for aircraft
construction.

Xcelite tools usta be sold in casein capped sets, as late as the
1980's. You can smell it. Casein plastic smells like sour milk:

http://www.ebay.com/itm/Vintage-Xcelite-PS-120-Nut-Driver-Set-11-Pieces-with-case-/302192976026?hash=item465c1ae09a:g:s-UAAOSwt5hYZZix

***OR***

http://tinyurl.com/hkfp45y


nb