I made a sketch based on aluminum profiles and drylin N 27mm sliders. Its quite cheap maybe around 200 bucks. Here is a small animation and a picture of drylin sliders
If you want to fullscreen go to vimeo an watch it there
BOM
With norwegiean prices(everything is much more expensive here... in us probably half the price if you shop around)
SLIDE CARRIAGE 27MM 39kr x 6 = 234
igus rail 300mm 85kr x 4 = 340
##belt 650mm 2.5 50kr x 2 = 100
##pulley 88kr x 2 = 176
steppers 140 x 2 = 240
driver, easy driver 129 x 2 = 258
arduino 200
20x20 profile 3meter 150
extra profile stuff fasteners 200
glass 100
=
1998
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