90 Degree Positioning Squares 2 Pack, Corner Clamps for Woodworking 5.5" x 5.5"(14 x 14cm), Aluminum Alloy Right Angle Clamp Carpenter Woodpeckers Tools For Boxes, Picture Frame And Drawers (Red)

Great for keeping everything square while fastening.

We have been doing some fun projects around the house and in the shop. This 90 degree clamp system has been really helpful. I had no idea how much easier it would be to line corners up and hold them more solidly.I did have to refer back to the pictures on the item page the first time we used it, but after that it was easy to put together and use.

Completely happy with these brackets. A real help. Used in conjunction withconventional clamp but a real help in assembling a cabinet before fasteners and adhesives.Strong enough to pull in some warpage depending on thickness.

As a hobby woodworker, I don't yet have all the skills and experience to make my 45 degree picture frame corners perfectly. So I've gone to using butt joints for my wall hangings. This little item has helped a lot. It is well made and finely finished. The rulers on the sides for inches and millimeters are nice, but I haven't found them that helpful. But being able to pull the corner together and know that it's at 90 degrees, that's a good feeling. Good tool for the rookie or experienced wood worker.

Worked very good for its size.

I just recently had a chance to use this yesterday. I'm currently building a frame and needed to line everything up. When I piece the frame together, it's perfect. All 4 pieces fit as expected. When I use this positioning square, the pieces don't line up at all. I have to mess with it a bit to make it work for me. I was assuming (that's on me) that I could simply stick this in a corner and everything would magically line up with little manipulation.Moving forward, I may have the adjust my cuts slightly to make up for the small degree of difference my clamps have.

This solid metal (aluminum alloy) corner clamp is very easy to use. It clamps onto two boards by screwing the black plastic nuts tightly to form a perfect 90-degree corner. I used it to put together one of my drawer dividers that had come apart (pic 4). I glued it and held it together to form the 90-degree corner, and it worked well. If your boards that are forming the corner are very big, it would be better to have a clamp at the top and one at the bottom to make sure the corner is 90 degrees all the way down the edge. It has a cutout in the inside corner which would allow you to determine if a mitered corner is fitting together correctly. It has accurate measurements on the outside edges (inches on one side and millimeters on the other side). This is a very handy and easy-to-use woodworking tool.

Theres only one in the box.. I thought it was a set.. but overall it is very sturdy.. thick metal.. easy to work with and use.. only thing that would make it better is if they sold them as a set..