I was just getting my stuff together to attempt my first repair of a cracked shank and I discovered that I can't really get a good, solid grip on the oval shank with a c-clamp. I'm thinking I may have to carve round depressions into a couple of small wood blocks in order to be able to clamp the shank securely, but before I proceed with this I was wondering if there's a specific clamp available for this kind of work. If anyone has any ideas, please enlighten me. Thanks.