: How can I build a jig for scarfing?
: I saw a picture on Jan Bednarski's home page. This looks like what I'd need
: to scarf plywood. Any ideas out there? It would be great if I could use my
: cirular saw. Thanks for your help!

By the time you've built a jig or set up to use a power saw you can do the whole thing with a sharp block plane. Look at Chris Kulczycki's book - the Kayak Shop - and follow his instructions. It really is that easy. Also, the problem with power tools is that they cut too fast and it's easy to overdo it. Good luck and enjoy the zen of planing.
Roy.