This is for you fellas that have made your own Friction calls.

I ordered some materials from Customsawing and made me a Glass over Glass call, with a walnut Pot- It's a beautifull call but sounds like S#@$.[:@]
I followed the instructions but was'nt pleased with the sound at all-
It's very monatone with no character what so ever
I'm gonna try another one- Walnut pot , Glass over slate-
Got any tips to improve the sound?