Where can those clamps be had? I'm no genius with my cheap and cheesy table saw. I presume the jig runs against the fence, but, I can't see how, from this shot. I've been debating whether to buy 20 ft redwood, or go less expensive route with scarfing.

: I am with Charlie on this. Done right they are stronger than the
: wood. I quit trying to find 'good' wood and just buy the best of
: what I can find. I cut the pieces into strips, cut out the knots
: with a couple of scarf cuts and glue them back up. I don't even
: worry about where they fall. So far I can't tell any difference
: in where the joints fall. They seem to bend just fine.

: I cut so many that I made a dedicated jig I use to cut the scarf
: joints with on the table saw.