MLCS Can-Do Heavy Duty Corner Clamp & Vise

These are the best corner clamps I've used. They are heavy, very sturdy and well made, and best of all hold the material firmly and at a perfect 90 degrees. I'm building new wood window jambs for large, historic double hung wood window sashes. The material is 1x6 lumber. The jamb legs are each 65" long and the header is 44" long. I didn't have any way to hold the material securely at a 90 degree angle while I attached the pieces with structural screws. Then I found these clamps online. They got good reviews, and I thought they were worth the price - which I considered reasonable. Turns out the clamps are worth 10 times what I paid. I was able to assemble the jambs quickly and perfectly. I couldn't be happier.

Wish I had these years ago. It is funny how some things are used so often after you purchase them. These little clamps are well built for price you pay. If you want to do metal work, they might work for very light occasional use...but I would go with larger clamps. I needed a clamp to speed up my wood target making process. The first target took 5 times longer to build, but by the 10 target I was really moving. You need two clamps for the jobs I have used the clamps for. I image will end up purchasing 4 clamps to speed up the production process. The Clamps are easy to store, light, and well built. Great item.

This thing seems super sturdy and it works fairly well. If you're going to use it for things like cabinets (big panels of plywood) i would suggest using two right angle clamps at a time, one at the top and bottom. It can be slightly annoying to use with the large handle. If it's sitting in the middle of a table, you can only do 180 degrees at time, then adjust the handle to do the next rotation. Place it on the edge of a table if possible, or make sure to get it pretty tight before installing so you only have to do a couple rotations to tighten. Some people might prefer the large handle because you can seriously tighten it down if you want, but for my purposes, a more ergonomic handle like they have on the horusdy 90 degree clamp works far better. Also, note that the tightening happens on the inside corner (the horusdy clamp tightens on the outside corner). I find I prefer working with an outside corner clamp for my purposes (cabinet building), but I think both are equally useful.

It's good. It's sturdy. I like the open area at the joint. First time I used it was to square up metal framing for welding. Worked well. Couldn't have welded the frames with some of the jigs out there because of a lack of clearance at the joint. It does take a little effort to get your pieces to mate correctly, as it tends to want to pull them apart as you tighten it. Overall, still rates 5 stars for a home handyman like me. Not sure I'd use it in a production facility but I don't have one of those, so all is good.

I purchased four of these Can-Do Clamps for assembling Bee Colony Boxes. The maximum thickness of pass-through stock on these is 1 and 3/4 inches. The maximum lay flat miter or T-Joint thickness is 2 and 3/4 inches. The Clamp body is nice and heavy, painted aluminum. The threads are of good quality and the clamp holds very firm with very good gripping of the stock. The corners are OPEN, so any glue can drip down the joint without messing up the clamp, you also have open access to the joints for screwing or drilling the corners without the clamp getting in the way. You can bench mount it, wall mount it, or use it to shim stock while locking down the 90 degree angle. I use two at a time, as shown in the video, and have them clamp opposite 90 degree angles, this makes all angles a true 90 degrees. They work exactly as I expected them to, I expect these clamps to last a VERY long time as there really just isn't anything to wear out. I recommend them without hesitation or reservation. When it comes to the inconvenience of the sliding T-handle for adjusting, I just get it well within a few centimeters of the stock I plan to clamp, then just put it on and finish tightening.

These clamps are amazing compared to the old corner clamps I had been using for years in my woodworking hobby. The old clamps were hard to align and I was never guaranteed a 90 degree fit. These clamps are not only great from an ease of use and accuracy perspective, but they will hold up versus the resin/plastic comparable products that I read everyone is breaking when they clamp them down. The price is definitely a little higher than what I wanted to spend per clamp (I bought 2). After using them I will now invest in more and hoping I will never have to buy another set. I did read the complains about the red paint transfer and while I did see some of that it was minimal, and I was able to sand it right off. I'm glad I bought these versus the plastic versions which are cheaper. The other nice thing about these is that you can join two different thicknesses with no issues. Overall I am very satisfied and definitely recommend these to anyone needing good corner clamps for woodworking.

I purchased two of these clamps for use with building wood outdoor furniture. The clamps work great for my needs. My Kreg corner clamp can’t handle the size of lumber that I often use or the configurations of the parts. I purchased two clamps; one for use where the joinery is being performed and the other to set the part being worked on at the same height above my work bench as the other clamp. I do use a combination square to get the parts straight before tightening down on the clamps. Money well spent on these “3rd hands.”

Sometimes I can get this clamp to work perfectly, other times it can be a pain. An example I have issues with is taking 2x4's with a 45 degree cut into them and trying to use this clamp to secure it when gluing the 45's together. It always pushes one side out of alignment. It takes some time and a little luck to get some of my projects to fit just right into this clamp. It is decently priced for what it is and does work on projects like the one pictured doing in the advertisement. I gave it three stars but I bounced around between 2 and 3 before settling with 3.

A small bit fiddly to get them to obay your need to clamp. (getting the edges to exactly but properly) But this is sort of expected as it cannot possibly cover all use cases. It also lifts the carcus off the ground by exactly the same amount all around and makes it easy to put in screws as needed. And of course it lets u butt up wood of different sizes. It is an excellent piece of kit. I bought 2 lots of them and use them all the time.

Vale a pena

It is very easy to use and also adjustable for making drawers and wood working. Previously holding and drilling a section is very difficult not uniform. I recommend anyone interested in doing wood work needed this clamp. It is very easy and fast to work with.

It is useful

I don't really know what else to say about a clamp. It works. Accurate clamping for butt joints. It's solid and it will probably out-live me.