based on:
http://www.openbuilds.com/builds/mini-v-linear-actuator-build.48/
Openbuilds BOM
$10 2x
http://openbuildspartstore.com/v-slot-actuator-end-mount/
$13 4x
http://openbuildspartstore.com/mini-v-wheel-kit/
$6 4x
http://openbuildspartstore.com/universal-l-brackets/
$18 1x
http://openbuildspartstore.com/nema-17-stepper-motor/
$7 1x
http://openbuildspartstore.com/gt2-2mm-aluminum-timing-pulley-30/
$5 1x
http://openbuildspartstore.com/smooth-idler-pulley-kit/
$39 3x
http://openbuildspartstore.com/v-slot-20-x-40mm/
$9 1x
http://openbuildspartstore.com/mini-v-plate/
$2 2x
http://openbuildspartstore.com/belt-crimp-clamp/
$1 4x 30mm
http://openbuildspartstore.com/m3-cap-head-screws/
$62.50 (25ft)
http://openbuildspartstore.com/gt2-2mm-timing-belt/
$3 4x
http://openbuildspartstore.com/double-tee-nut/
$2 6mm
http://openbuildspartstore.com/socket-head-screws-m3-25-pack/
Gridbeam BOM
aluminum 1.5“ gridbeam
1/8 inch x 2 inch perforated aluminum plate
90 deg angle stepper motor mount
90 deg angle bearing block
1/8 inch aluminum plate carriage
1/8 inch apeture rollers
nuts, bolts, spacers for rollers