Hi Danny,
All very low tech I am afraid.
Sheet is covered in masking tape and marked up.
Basic shape is cut by scoring a straight line along one edge of the shape with a Stanley blade, then flexed to snap off the waste. Cutting discs generate too much heat and distort the sheet. Hacksaws, jigsaws are messy and need too much reworking to obtain a straight edge.
This is repeated until the basic outline remains, finishing is completed with sandpaper (by hand). I found 120 grit the most effective for removing material and giving a nice finish to the edge of the material.
Bonding is done initially with a thin coat of solvent adhesive, multiple points are melted through and the edges are bonded using a soldering iron then finished with sandpaper.
I will dig out some "work in progress " photos and post them.
Cheers
Bernie
