Spool holder

Another spool holder 40mm in diameter(for 1kg filament spool, ~90mm width). I needed a one with mounting holes but didn't found here a suitable for me. So I have design one... Probably I will make a remix in future -have spools with different inner diameters.

Updates:
2018-04-29: 3D printing adaptation of the part, chamfer on the fixturing holes