2 Pack of 4 Way Pressure Clamps for Clamping Panels From All Four Directions. For Woodworkers, Cabinet and Furniture Makers (2 four way pressure clamps)

Very well-built. For added straight edge, instead of wood beams suggested, I bought a metal 8' square tube 1-1/2" square for each clamp set of two, cut them in half to make two 4' beams, drilled and threaded for 1/4"-20 x 1" flat head Phillips machine screws. For gluing shorter panels, I used a 10" piece of wood (spacer) to reach the clamps bumper pad. This was more expensive than wood (cost of square tube and screws) and heavier, but gives a much straighter edge to hold the wood panels being glued together. It also doesn't stick to the glue and won't warp over time which wood beams would do. Very good product, strong, and offers unlimited options for length. Much less costly than fixed length ones.

These make the greatest clamps ever and the best part is I can make them as long as I want! Super-easy to assemble, and I’m happy to have them!

I'm waffling between 4 and 5 stars here. These clamps work as designed, are high quality and heavy cast iron and seem like they are made to last. That being said, there's a learning curve to using them effectively. I suggest practicing with them during a dry fitting of your project before adding in glue, otherwise you're likely to make a real mess.Okay let's back up a second. The first thing you need to do is mill 4 lengths of wood to use as the crossbars for these clamps. The instructions are perfectly fine (despite a reviewer here complaining about them), but you need to know how big to make them. I bought these for use making cutting boards that will be no more than 13" wide, so I made them 24". You should also own a jointer to get a good milled edge on the crossbars, so that might be a small challenge if you don't own one.Regarding the learning curve, you need to play around a bit to figure out where the clamps should be positioned on the grooved plastic thingies so that there is enough room to get your glued pieces into place and to give you the right amount of space for clamping. While I have not yet made a cutting board with these, I did use them to glue up a 13' long countertop using various lengths of board that were around 3" wide. I placed the bottom crossbar of the clamps underneath the dry piece, positioned correctly by dry fitting everything first, then glued up my 2nd piece and slid it into place under the top of the clamps. Then, I put the top cross bar into place and clamped them down. From that point on it was easy to put other clamps into place as needed.So, overall, I do think these are very helpful. You could easily get away with two lengths of board or metal to sandwich your board together with regular clamps, so consider these just another option.

These are amazing!Get some super strut and cone nuts instead of wood for the cauls. My only wish is that they sold the plastic pieces that attach to the cauls separately. The 4 I purchased should be plenty for me, but I’d like to be able to create a few different sizes. The mounting blocks should be really cheap, but not sold separately.

I had a need for an additional pair and figured I'd give these a shot - been using the Woodcraft/Woodriver versions for years, buying a few when they go on sale. The picture shows the two versions next to each other; aside from the minor differences in the handle (the Woodriver is a little thicker on the knob, Peachtree-DFT needs to clean up their casting flash), the only other difference is the Woodriver has a slightly thicker screw. In practice you can't tell which one you are using, and the plastic cauls are 100% the same other than the logo. Are they better, or worse? Neither - if I had to make a guess, they came off the same line just that my Woodriver clamps are a few years older than the Peachtree offering so maybe if I went to Woodcraft and bought a new set for $15+ each I wouldn't know the difference.

These are kinda pricey for what they are but definitely handy. Instead of wood try mounting them to some strut channel. It will make cleaning glue squeeze out easier.

Plan ahead with your settings. Superstrut 12 gauge. Use a 5/8 inch dowel to align all the slot on your super strut. Know how to clamp. Don’t overtighten. Works great when you have your panel already dominoed. If you don’t like planning and setting up this isn’t for you. But if you know what you’re doing, this will take your panels to a new level (see photos for ideas that may help). Those are 1/4-20 Allen bolts connecting to 1/4-20 superstrut cone nuts. Adjust accordingly. Rocks!