I was browsing the Inventables store and found these cool Ply Products brackets that join plywood together at right angles. The PLY90 corner brackets simplify joinery by allowing you to attach two sheets of plywood together at a 90° angle without drilling or screwing into the plywood.
Tightening the screw in the PLY90 connector compresses the connector and it grips both sheets with lightly serrated jaws. The corner also has holes so you can mount the connector to the wall with 2-inch #8 or #10 screws.
The bracket can be used with plywood and other sheet materials from 0.450″ to 0.755″ thick. Ply Products recommends that, to get the best performance and most secure hold, you don’t mix material thicknesses with a single connector.
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Ply Products is located in southern California and manufactures the brackets in the USA. They are extruded from a high strength aluminum alloy and then cut, drilled, and finished. The hardware is made from premium alloy steel.
The brackets ship with two different size screws: the 3/4″ screw works with 1/2″ materials, while the 1″ screw is used for 3/4″ materials. They mention that if you have a slightly thicker material, like Melamine, you can use a longer screw. This makes me wonder how thick of a material you can use before the brackets become ineffective.
Over on the Ply Products website, a four pack of the PLy90 connectors costs $30, or you can go whole hog and purchase a box of 96 to $720. You can also purchase a set of four for $30 at Inventables. At either site you can also purchase the 3/16″ hex driver needed to tighten the brackets.
Price: $30, pack of 4
What would you use something like this for?
I can see where these connectors would be a really fast way to create a simple bench, desk, or other furniture without worrying about the joinery. They’d be handy for the average homeowner, armed with just a Skilsaw and a head full of ideas, or the experienced woodworker that just wants to knock something out in a half hour.
All you have to do is cut the sheet goods to size and assemble your creation with the PLY90 corners.
Also, if you’ve never browsed the Inventables site, they tout themselves as the “hardware store for designers.” Inventables is the company behind the Shapeoko, X-Carve, and Carvey CNC router machines, and they also sell all the individual parts you’d need to build your own custom machine, including stepper motors, aluminum extrusions, and other hardware. They also sell a wide variety of materials such as Corian, aluminum, Delrin, and more.