NOTE: X-MOTOR.STL and X-IDLER.STL are made for 22mm spacing
UPDATE 15.5.2016
UPDATE 14.2.2016
UPDATE 29.12.2015
X-axis with fixed X-endstop and finger adjustable belt tensioner. Nothing new compared to already published (like ffleurey's thing:169636 and jkoljo's thing:372056). It's just this smooth looking design I like and wanted to share it.
Note that there's no spesific Z-endstop trigger point as I prefer inductive proximity switch (mounted with the extruder).
The distance between Z-axis's smooth rod and leadscrew is not same in all Prusa i3 versions. The kit I bought from Aliexpress.com is having 8mm acrylic frame and designed with 22mm distance but it seems that 17mm is more common. Also in Geeetech I3 X the distance is different, 27mm.
GT2 belt ends should stay in place without zip-ties. My printer is fixed in enclosed cabinet so belt removal is easier and doesn't require removal of X-carriage.
2 x F623ZZ (3x10x4) or F693ZZ (3x8x4) flanged bearing (idler)4 x M3 20mm recessed head screw (stepper + idler)1 x M3 nyloc nut (idler)6 x M3 12mm hex socket screw (leadscrew nuts)2 x M3 10-16mm hex socket screw (tensioner)2 x M3 nut (tensioner)1 x M4 20-30mm hex screw (tensioner)1 x M4 nut (tensioner)| DIMENSIONAL_DRAWINGS.PDF | 157.0KB | |
| X-BELT_TENSIONER.STL | 500.2KB | |
| X-BELT_TENSIONER_ARMS.STL | 110.0KB | |
| X-CARRIAGE.STL | 281.3KB | |
| X-IDLER.STL | 298.3KB | |
| X-IDLER_17mm.STL | 284.0KB | |
| X-IDLER_21mm.STL | 263.8KB | |
| X-IDLER_27mm.STL | 310.3KB | |
| X-MOTOR.STL | 284.6KB | |
| X-MOTOR_17mm.STL | 284.9KB | |
| X-MOTOR_21mm.STL | 263.9KB | |
| X-MOTOR_21mm_WIDER.STL | 264.3KB | |
| X-MOTOR_27mm.STL | 285.1KB | |
| X_ENDSTOP.STL | 39.1KB |
