For anybody into the art of bookbinding i am posting these t-bars and corners. I made them in 2, 3, 4, 5, 6, 7, 10, 15, 20 and 25 mm. The space on each side of the long 'pin' is 15mm, the height is 3mm.
The corners are 2, 3 and 4mm width sizes.
All the t-bars and corners have the size embossed on them for ease of use.
All available as 1 zipfile: bookbinding.zip