A step-by-step instructional video for my own version of the Openbuilds C-Beam linear actuator. I designed my own parts based on the Openbuilds ones, and cut them out of acrylic using my laser cutter. The SketchUp files are available here: http://birchenough.co.uk/lasercut-acr...
Mini v-wheels on aliexpress: http://www.aliexpress.com/item/High-tolerance-CNC-mini-v-wheel-kits-for-v-slot/32390360403.html
Eccentric spacers: http://www.aliexpress.com/store/product/High-performance-50pcs-lot-CNC-SS303-eccentric-spacers-for-v-weels-kits-on-v-slot-rail/1711438_32626050755.html
Parts list
Laser cut acrylic parts: Gantry plate, 2x endplates and anti-backlash nut trap
4x mini v-wheels including bearings, M5 bolts, nyloc nuts, 2x eccentric spacers, and 2x standard spacers
2x reprap-style opto-endstops
8mm shaft coupler - external dimensions: 18 x 25mm
2x 8mm collars with grubscrews
2x 'thin' 8mm washers - 8mm ID, 12mm OD
2x 688ZZ bearings
C-beam extrusion - in this case, 500mm long
M8 threaded rod, the length of the C-beam extrusion plus 25mm. ie. in this case, 525mm long
2x M8 nuts
Compression spring - 9.5mm ID x 15mm long
NEMA 23 motor
2x aluminium spacers, 5.5mm ID x 40mm long
2x M5 x 60mm bolts
2x M3 x 25mm bolts
4x M3 x 10mm bolts
6x M5 x 20mm hex bolts
2x M5 x 16mm countersunk bolts
Aluminium foil
Superglue
Solvent cement
