Cheap and Easy Lap Joint Jig

Cool. Looks like it could be used for tenons too.

-- We must guard our enthusiasm as we would our life - James Krenov

You’re right Wayne. I could also use it for tenons. I didn’t even think about that when I created it.

-- There are three types of people in the world, those who can count and those who can't!

Looks like my tenoning jig!

I used it tonight.

http://lumberjocks.com/projects/813

looks alot like my tennoning jig!

-- "What one can make with good tools is limited only by one's talent" (lucius-hill@comcast.net)

I’m a little confused. From the look of the blade you are pushing the board to be cut into the blade. That makes sense but it leaves no support on the back and, IMHO, those little clamps might not be enough to securely hold the wood. I can imagine the blade kicking the board back and ruining the wood.
If you put the plexiglass on the other end of your jig then you would have a little more support.
Just a suggestion. It’s always good to make jigs that make tasks a little easier.

-- No piece is cut too short. It was meant for a smaller project.

Trust me, those little clamps hold very well. I could put the plexi-glass in the back but I didn’t want to give too much confidence to the screws holding the plexi being that they are fastened into the “end-grain” of the plywood. Either way I would have them clamped down so “six of one and half a dozen of the other” I guess. My design is a modification of a plan I found in one of my Fine Woodworking books and they have their wood in the front as well. If I run into problems I’ll move it.

-- There are three types of people in the world, those who can count and those who can't!

Do you make one pass with the jig and then trim to the right size or just nibble away at it?

-- Fred Childs, Pasadena, CA - - - Law of the Workshop: Any tool, when dropped, will roll to the least accessible corner.

Good job.

-- Jiri