Rehd,

I think it is just a thin kerf small circular saw blade, I think the diameter is about 3.5", the kerf must be about 3/32", about the same as the middle ply of your 4 mm plywood. It was set up to do spline joints on 4mm plywood. The spline is also plywood, ultra-thin though.

The setup is not mine, Tom Jordan, the one that had the Coho with a recessed cockpit at R2K2 did it.

Mihke

: Hi Mihke ( ahhh.... memories! )

: I'm using 4mm ply and I don't think I've got anything thin enough to make
: that cut. Sure would be nice though. I know it wouldn't take much of a
: cut, depth wise, to get the strength back, especially with resin/glue.
: But, alas, I will have to stick to either the glass or ply doubler. Thanks
: for the tip, and what size blade would that be on that shaper/router
: table??

: Rehd