Mk3s to mk3s+ upgrade, no mention of optional parts in assembly guide?
 
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Mk3s to mk3s+ upgrade, no mention of optional parts in assembly guide?  

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Yoqvin
(@yoqvin)
Member
Mk3s to mk3s+ upgrade, no mention of optional parts in assembly guide?

So I just finished upgrading my second hand mk3s to an s+

I chose to print the files listed as "optional", but ended up never having to use them due to the assembly guide not mentioning them.
I even tried following both the extruder guides for users with an mk3 and an mk3s in case it was only mentioned in one of them, but nope.

So now, I have two parts left over that I was hoping to use, the ones that hold the X motor/attaches to the lead screws.
Anyone knows where I can find an assembly guide for them?

As far as I can tell, they only offer an easier belt tensioning for the X belt, but still I'd like to use them 🙂

Posted : 19/03/2026 7:37 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Mk3s to mk3s+ upgrade, no mention of optional parts in assembly guide?

This May Help! 

https://help.prusa3d.com/manual/original-prusa-i3-mk3-mk3s-to-mk3s-upgrade_1183

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility.Location Halifax UK

Posted : 19/03/2026 8:38 pm
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