I love easy jigs that solve big problems. Few jigs are more useful than those that make it easier to glue boards. This post will describe how to build super easy corner clamps that you can make with scraps just sitting around the shop.
Clamp it Down!
Every woodworker has scraps of random wood laying around the shop. And every woodworker that has tried to put a box together just to realize that it’s hard to keep the corners of the box together, especially with miter joints. These clamps help solve this problem and they’re crazy easy to make.
There are basically two steps. The first step is to cut some rectangles out of the scrap wood. These can be any length and width, as long as they will fit around the corner of the box. I chose not to make mine very big just so they were easier to work with and store.
The second step is to cut a 90 degree angle out of the middle of the blocks. This 90 degree angle should be set at a 45 degree angle to the edge of the block. Basically think of making a PAC-Man with a square back. Save the 90 degree part that you cut out, because you can use that later.
How Do You Use This Thing?
As you can see in the pictures above, the flat part on the back of the block is where one end of the clamp goes. The other side of the clamp goes on the inside of the corner joint. In the box I made, I had a triangle piece on the inside of the corners that gave me a flat surface for the other end of the clamp. If you choose not to use something like this triangle, you can use the small 90 degree part you cut out earlier to use to temporarily fill the corner for the clamp and then remove it when the glue is dry. If you do this you might want to cover the small 90 degree piece in painters tape so any glue from the joint doesn’t stick to it.
If you think there’s ever a chance you might make a box or use miter joints, this is a great small jig to make. It’s another great project to work on while the glue is drying on something else!
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