Motedis include any left over pieces if you choose to have your items cut from standard 2, 3, 4 or 6m lengths, instead of specifying individual lengths.
I used GoNest 1D to optimise my cutting plan and allow for the kerf/waste generated by each cut.
This is 4 x 6m lengths of 20x20mm and 2 x 960mm lengths of 20x40mm aluminium extrusion cut according to my requirements.
Mini Kossel, 3 x 660mm and 9 x 240mm pieces of 20x20mm extrusion:
A 6m length of 20x20mm extrusion from Motedis costs £17.21 ($26.50), so about £13.00 ($20.00) for the Mini Kossel parts
Here are the sliders that actually have surprisingly little slop and slide really smoothly on the rails, these were £2.09 ($3.25) each, they are injection molded from Acetal/Delrin/POM.
T-Nuts and various other screws to the frame ends, to speed up the assembly process.
T-Nuts came from RobotDigg @ $7.50 (£4.80) for 100.
Orbital Fastners @ £3.95 for 100 M5x10mm and £4.06 for 100 M5x12mm screws. 36 of the M5x10mm and 6 of the M5x12mm screws were required, the rest will be used on the CO2 laser cutter project.
First I attached a 240mm length of the 20x20mm extrusion to each of the top mounts
20x20mm extrusion to each of the motor mounts
20x20mm extrusion into the motor frame
sliders in place in this picture.
The top frame is not in its final position just yet, the top mounts need a little more TLC so that they can be attached/removed a little better, they are still very stiff at present.
I also need to have a think about modifying the carriages so that they can be attached to the sliders and still line up with the pulleys and motors.
A while back I bought a set of 8 M6 feet, for use with my CO2 laser cutter project, for £3.21 ($5.00) from ebay seller gadgetskingdom, I only actually need 4 for the laser, so I decided to use 3 of the remaining 4 feet for the Mini Kossel.
I bought a set of Europa spiral flute taps for £50.00 ($77.50) at the recent Model Engineering Show at Alexandra Palace, the set comes with the correct size drill for each tap size.