The “T” shape at the top of the part slides up and down an aluminium channel, part of a greenhouse door assembly. The rest of it bolts into the door itself. When these parts broke, my grandparents asked me if I knew of any way to make more. My first thought was 3D printing, but I didn’t think that the layers would hold together well enough from repeated sliding.
I contacted Chris, and we decided that the best option would probably be cutting them on the wood router out of a solid block. Chris had some HPDE left from another project, so we used that. We cut them in three batches of four. We had multiple identical pieces of this scrap, so that made it a much more simple task. A picture of our setup on the table is below: