Snapmaker J1 one size front-loading spool system

Front-loading spool system for the Snapmaker J1. There are already some other designs available, but I wanted a (non adjustable) one-size solution with support for wide spools and plenty of clearance toward the extruder parking tray and the build-plate. Also I wanted to reuse the original screws for mounting the spool-holders.

For this design per side you need....

...to print:

* 2x side-panel (flat)
* 1x base (flat)
* 2x bushing (upright)
* 2x washer (flat, optional)
* PTFE Hose Guide (optional; see below)

.. the following parts:

* 2x 6mm rods ~ 87mm in length. Tips sanded for easy fit and rounded for low friction at contact point with side-panels.
* 4x 696ZZ bearings
* 6x self driving screws M2x16
* 4x self driving screws M2x12
* approx 1,20m low friction (reverse) PTFE tube (preferably inner diameter >= 2mm)

Most parts can be printed lying. The bushing must be printed upright. All parts can be printed in copy-mode.

Exception: The filament-passthrough I t