Prep

You will want to reference the original ERCF v1.1 Build Manual

I have lots of pictures and raw video footage of when I assembled my ERCF. I hope to make some time to edit something together and post up to YouTube.

I'll throw up some basic stuff for now

2020 extrusion

SturdyBunny requires a length of 2020 extrusion. The exact length depends on the number of gates you want as well as the type of filament blocks you'll be using (Triple-Decky or Thumper Blocks).

If using Thumper Blocks

I have a 6 gate ERCF kit. I cut my extrusion to 175mm. This allows me to fully swing open the upper part of the assembly to about 105 degrees. So....a formula could be derived like this:

(NumberOfGates * 21) + 49

A 9 gate build would probably be around 238mm; I'd round that up to an even 240mm. This is just an estimation

If using Triple-Decky

If using Triple-Decky then reference this post from the designer of Triple-Decky.

It basically says this about the extrusion:

Length of 2020 extrusion = 54.6 + (N x 23.05) Note that the extrusion can go past the block end without problem.

I've also heard several times on the Voron discord server that 7 1/4" (184mm) is a good length for a 6 gate build See this post on the Voron discord server

Heatset inserts

Reference the manual, you'll need to be able to install heatset inserts into a variety of different parts. The manual provides a link to a tutorial in case you aren't already familiar with this process