This part is a corner brace used in repairing wood furniture. Set the desired parameters in the OpenScad file and you can make the brace for your bench or table.
This was originally made for a Repair Café in my town.
My piece was made using brown PLA and it is very similar to the original piece which fits well in the repair.
credit to Osborne Wood Products for the cover photo
40 % fill with concentric fill strengthens the holes.
When the part is in place it is under compression.
No supports are necessary.
The author marked this model as their own original creation.