This is the arm carriages for my custom built delta printer, based on the Kossel Mini. The red and green HWIN carriages f*d up my black theme I had going, so I covered them with the carriages. This means you'd have to use support when printing, but at least they look good! You need: 4x M3 screws 2x 10x3 mm magnets 2x 10x3 countersunk magnets This is the effector I am using: http://www.thingiverse.com/thing:881793 ..and the complete printer: http://www.thingiverse.com/thing:923830I