Mark 4 build - step 1: Triangles: assembly 3

The next step is to pop in the idler sliders.

• Assemble the bearing first - it goes on the raised impression, with a m5 nut on the back.  Tighten down.
• Next insert the other nut into the rectangular slot.  It should be a reasonably tight fit.
• Insert the idler slider into the idler bracket, with the bearing on the inside.
• Drop the final screw into the hole on top of the idler bracket, then through the idler slider and screw it into the captive nut.
• Done!