Micron Build Notes
I decided to build a micron using a formbot kit. Here is a collection of notes on that.
Status
In progress, I am still building this printer so various parts of these notes are incomplete. These notes correspond to commit 8aee056, any changes made after this commit are not reflected.
Additional parts used
As the formbot kit is designed for the standard gantry I found my self short a couple of parts. Here is everything I ended up needing on top of the kit.
- m2×10 Flathead: 1
- m3×10 BHCS: 5
- m3×16 SHCS: 4
- m3×18 BHCS: 10
- m3×25 BHCS: 3
- m3×6 BHCS: 9
- m3 nut: 7
R1 Gantry Assembly
Here are some drawings outlining how to assemble the R1 gantry. I used these to guide my build.
Front Idler
You will assemble two of these. They have an orientation
Idler Carrier
For the second one assemble the same way just rotate the front cover 180°.
Idler Assembly
The missing bolt is missing on purpose.
The second one is assembled the same way only using the second idler carrier. The front, bottom bolt is missing from both. You should have two idlers which look like this.
XY Joints
Left XY Joint
This Should probably be more than one drawing… Note, the M3×25 BHCS thread into the plastic part.
Right XY Joint
This is the same as the left joint only the toothed idler and bearing stack have swapped vertical positions.
AB Drives
A drive
I left out the limit switch and the belt clamp constructions as they felt basically self explanatory. Yet again the missing bolt is missing on purpose, this is how the gantry mount to the z-axis later. Crucial note: the bearing stacks on the A drives do not have shims on the bottom, there is a raised plastic bit to do that for us. Finally: the pulley on the A drive should be aligned with the upper bearing stack.
B drive
This is very similar to the A drive. Important this time the bearing stacks do not have shims on the top of the stack. The pulley should be aligned with the bottom bearing stack.
