Adjustable Clamp 9133 Corner/Splicing Clamp, 3-Inch

My single complaint with this item is that setting the angle based on the numbers around the arc on the product itself is pretty strange, and the degrees are only shown in tens. There is a screw you looses to change the angle, and on the frame next to that screw is a line. That is the line you use to set the angle, which is a little non-intuitive when you are looking at the clamp. That said, it's very accurate. I set it to 90 degrees, and used a protractor to verify, and it was a true 90 degrees.However, it only shows 10 degree increments. So for any fine adjustment, you will need a protractor. I am doing a project where I need to set angles down to a tenth of a degree in some cases. There is no way I could even get a close guess with just the numbers on the product itself.That said, it is easy to adjust with a protractor and, once the screw is tightened, holds its angle wonderfully. So while it may be a bit of a process to adjust precisely, it is an invaluable tool to have. I have not seen another like it. I am going to order two more.

Got two of these to help glue up an octagonal window casing made with birds-mouth joints, which may seem fairly esoteric, but the clamps work well and fill a long-felt need. They are easier to use for partial assembly than a band clamp. You can quickly adjust them to any angle, and they can be fastened (screwed) to a backer to make jigs. They are well-made but not super heavy-duty -- if you need an adjustable clamp to apply even edge-pressure for large glue-ups or for welding something substantial, these aren't for you. However, you can make a similar large jig using a couple of hinged plates and regular clamps.

Device holds the boards securely, and is easy to use. The angular indications need better definition when joining “non-mitered” sections

You will need a protractor to set angles accurately but these clamps are fantastic for fastening to boards together firmly so they can be nailed, screwed or glued. Am using 2 of them at either end of 12.5" boards and everything is aligning perfectly. Pony is now out of business so these might not continue to be available so if you need t1 or 2 of them, buy them now. The only other adjustable clamps I could find were over $700.

A great little device. It is rugged but not capable of precision, simply by design. I used two at once to hold opposite ends of a pair of rectangles held at an angle to each other. Very nice.

I had to return two of these clamps. They have in my experience two fatal flaws: the screw tightening the angle has been changed from being on top to the bottom making the work become loose and the angle setting inaccurate; the other issue is that this same screw, straight slotted, has been torqued so much that no amount of force, including a vice-grip could loosen them.

I bought two. One was broken when I got it (center swivel post cap was in bag) the second one broke the same way when it fell off my work bench. I was still able to use the clamps to glue two pieces of wood at 105 degrees but the clamps would have been easier to use if they had not been broken.

For gluing a corner piece of a broken speaker cover this worked well and is adjustable enough to do the job.