Homemade top clamps
I had a task to make oak cladding on plywood.
For testing purposes, I made a couple of clamps to hold the oak planks against the top of the plywood. On a trial preparation, the experiment turned out to be successful and I have already made several such clamps.
The clamp consists of two bars 45x40x800 mm. They are connected to each other by plywood strips 15x50x200 mm. I made grooves in the bars and connected them to dowels 12 mm in diameter. (Scroll through the gallery)
Nuts are embedded in the upper bar from the inside of the bar. One in the middle and two 150 mm apart. from the center.
The screw clamp is made of M10 threaded rod 200 mm long.
A lamb is made on top - just a piece of plywood, clamped with two nuts.
The bottom clamp is made of two parts 60x60x20 mm birch square and the same one made of plywood 9 mm.
This clamp is made according to the same principle as in the clamps, which I talked about here.
A nut is screwed onto the hairpin and slightly flattened so that it does not turn. A 22 mm blind hole was drilled in a square bar. to the depth of the nut, and a through hole of 10 mm was drilled in the plywood.
A hairpin, with a jammed nut, is inserted into the hole in the plywood square, and a square bar is glued from below. Thus, the clamp does not rotate when tightened.
With the help of such clamps, you can achieve uniform pressure when gluing fairly wide parts.
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Alexander.
P.S. I also invite you to your site.