TUSH2 - A simple sliding re-remix

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I just receive the MMU2S (my journey is starting… I know) so I need to adapt my workspace.

I love this sliding remix of the TUSH2 (here) and I used it as my main spool holder for all my print but some detail were bothering me so I corrected them:

• 3mm nuts are now placed inside the spool, rather than popping outside. So you can pack spools side by side satisfyingly.
• 3mm nuts were not hold in position properly in the original version, now it is a satisfying very tight fit (use a clamp). Nuts will never turn again.
• Now, If you use a 3mm bolt of length 12mm, It will not stick out of the TUSH2, as it was [slightly] the case in the previous version.
• The sliding rail length has been increase to 24cm and supported with 3 small screws. This change was important to me: MMU2S = 5 spools. You can print many of them on the prusa bed at once.
• Sliding rail tolerance has been increase, should be easier to slide.
• I dropped the arms support system, going back to a plain design without any hole.I never used them in my previous versions.

THIS IS A REMIX FROM A THINGIVERSE MODEL: https://www.thingiverse.com/thing:2853619 I could not reference it properly in the prusaprinter system as it has not been imported here yet.

Edit: 01/04/2022:

It was suggested in the comments/makes to reduce the scale of the Rail to 95% to allow better slide with no resistance. According to what you want, i.e. tight slide or easy slide, you might want to follow that advice. Thanks !