I did a quick web search and found a few sites which seem to contain useful information on violin construction or bow rehairing, plus some warnings.
http://www.donleysmithviolins.com/bow%20rehairs/pages/rehair_index.htm
http://www.johnson-inst.com/repair2.htm
http://www.graffiti.it/stradivari/photostory/storybrd.html
http://www.centrum.is/hansi/intro.html
http://www.cauer.com/violincare/
They are worth a look!
Quack!
GtD.