Links for Luthiers

http://www.ottofrei.com - Files and other fine tools

http://www.klingspor.com - Sandpaper & Tools and if you can make it to one of their locations, check out their selection of old antique tools with good steel

http://www.burgessviolins.com - Includes great links for information on violins from entering making competitions to humidity

http://www.vanzandtviolins.com/dvz-resources.htm - All sorts of violin making and research resources available through links