An artist in my circle wanted to make a frame on which to stretch a canvas.
The joint in the corner of such frames is a complex thing that is not to be tackled by a beginning woodworker. I needed to simplify it.
In the hope that beginners will give it a go I have reduced the joint to four slats. The ends are cut square, at 45 degrees and at 15 degrees.
These slats are layered and their ends combine to make up the interlocking, wedge operated stretching mechanism.
This is how the kit looked when it was ready for canvas.
Layering gives neater and cleaner joints that any amount of machining.
Mitres create a neat square frame to staple a canvas to.
As the wedges are hammered against the 15 degree ends the frame expands.
Four slats are clear in this view. Two outer slats are cut at 45 degrees and the inner cut at 90 and 15 degrees. Mess from the glue is hidden by the canvas.
This project was perfect for batch production; the pieces are simple and can be cut in multiples. BUT, the coolest part of all is that when it was done we put our carriages together and created a train of inspiring proportions. We used our usual techniques of dowel hammered into holes that are 0.5mm too small….
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