1. Tracks
Tools
- T25 driver
- 150 grit sandpaper
8 steps
Tracks: lay out the first track
Lay out the three 1 m track extrusions end to end along the top of the first long side of the raised bed.
While the ends are accessible, position the two 40 mm nut bars, one at each joint. Slide each bar halfway into one extrusion, then fit the neighbouring extrusion over the projecting half so that 20 mm sits inside each extrusion. Bring the ends together and align the V-faces. Keep each extrusion flush with the side and the top of the bed.
Credit: based on the official FarmBot Genesis v1.8 assembly guide (genesis.farm.bot). FarmBot Genesis CAD by FarmBot Inc., released under CC0 1.0.
Tracks: secure the first track to the bed
Use the nine wood screws to secure the first track, three screws through the mounting holes in each extrusion. Drive them with a T25 driver, keeping the extrusions flush with the side and the top of the bed and the adjoining V-faces aligned.
Tracks: lock the first track joints
Fit and tighten the four M5x4 set screws into the two 40 mm nut bars, two screws per joint with one on each side of the joint. Keep each nut bar centred, with 20 mm inside each neighbouring extrusion, and hold the V-faces aligned as you lock the joints.
Tracks: lay out the second track
Lay out the remaining three 1 m track extrusions end to end along the top of the opposite long side of the raised bed.
While the ends are accessible, position the two 40 mm nut bars, one at each joint. Slide each bar halfway into one extrusion, then fit the neighbouring extrusion over the projecting half so that 20 mm sits inside each extrusion. Bring the ends together and align the V-faces. Keep each extrusion flush with the side and the top of the bed. Keep the second track parallel to the first along its full length, within about 1 cm.
Tracks: secure the second track to the bed
Use the remaining nine wood screws to secure the second track, three screws through the mounting holes in each extrusion. Drive them with a T25 driver, keeping the extrusions flush with the side and the top of the bed and the adjoining V-faces aligned. Maintain parallelism with the first track along the full length, within about 1 cm.
Tracks: lock the second track joints
Fit and tighten the remaining four M5x4 set screws into the two 40 mm nut bars, two screws per joint with one on each side of the joint. Keep each nut bar centred, with 20 mm inside each neighbouring extrusion, and hold the V-faces aligned as you lock the joints.
Tracks: check parallelism and mounting
Check that the six track extrusions form two tracks that remain parallel within about 1 cm along their whole length. Compare the distance between corresponding V-faces at both ends, at each joint and between the joints.
Check that all six extrusions are flush with the side and the top of the bed, with three wood screws per extrusion. Check that all four joints have a centred 40 mm nut bar and two tightened M5x4 set screws, one on each side.
Tracks: smooth the V-faces at every joint
Gently run a finger along the V-faces of the six track extrusions, checking all four joints for bumps. Sand any raised edges at the joints with 150 grit sandpaper until the transitions feel smooth so the V-wheels can roll smoothly.
