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 carrier

Idler Assembly

The missing bolt is missing on purpose.

front idler

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.

both front idlers

XY Joints

Left XY Joint

This Should probably be more than one drawing… Note, the M3×25 BHCS thread into the plastic part.

left xy joint

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.

A drive

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.

B drive