Lock miter for box corners

Make a taller fence that can be fastened to your existing fence. That will help stabilize the piece.

-- Bill, Yo!......in Brooklyn & Steel City :)

I totally forgot to mention the fence…. I have a taller auxiliary fence installed and that helps with the tilting away from the bit. My primary problem is the stability of the narrow piece. It tends to rock back and forth as I push it across the table and through the bit.

Rick.

-- Rick -- I never let my lack of talent get in the way of my creativity.

Use a large square piece of plywood as a push block.

The long side against the fence will keep it square and and the long edge against your part will keep your part square.

Something like this…

with your piece on its face instead of its side.

Thank you! That’s basically what I am looking for. I can make the piece that rides against the face as tall as needed to keep stability.

Rick

-- Rick -- I never let my lack of talent get in the way of my creativity.

Ah yes, should have mentioned having a sacrificial piece behind the workpiece to further help stabilize it against a taller fence and prevent tearout. You can also clamp the workpiece to the the sacrificial piece to further eliminate movement. A push block would also help keep it tight to the fence.

Thank you! That s basically what I am looking for. I can make the piece that rides against the face as tall as needed to keep stability.

Rick

- generick

-- Bill, Yo!......in Brooklyn & Steel City :)

Make a sled that can hold the piece tight to it with a clamp if need be. I do a lot of lock mitering and I have a sled that I clamp my vertical pieces to all the time. It seems impossible to do it with the board floating on its own because you are cutting away the edge that it is riding on. It will want to slide down or in when the miter is cut.

I try to avoid small pieces on either direction. I use a larger board and then cut it to size later if I’m faced with small mitered pieces.

Her is my sled that I use: http://lumberjocks.com/projects/58045

Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

All I can say is WOW!. That is amazing. I think you have enough pictures that I can probably try to replicate it. Any word or wisdom or other advice?

Rick

-- Rick -- I never let my lack of talent get in the way of my creativity.