I stumbled across this site while looking for "I don't remember what" and they had some materials and supplies that can be used for penturners. I have never ordered from them:
Stewart-MacDonald: Everything for building and repairing stringed instruments! | stewmac.com
Whip Tips | stewmac.com
StewMac Super Glue Caddy | stewmac.com
Stewart-MacDonald: Everything for building and repairing stringed instruments! | stewmac.com
Whip Tips | stewmac.com
StewMac Super Glue Caddy | stewmac.com