Prusa i3 MK3/S/+ Upgrade Parts
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A Collection of Prusa MK3/S/+ Parts that are better than the stock ones (IMHO).
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Updated at source:
Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- GNU General Public License v2.0
These parts are meant to allow you to print faster with higher accelerations reliably. They stiffen parts of the printer that I found to be less stiff than I wanted.
Link to MK3S+ Assembly Guide (Should be the same for MK3S and MK3)
DISCLAIMER: I can't recommend supporting the lead screw with a bearing if your lead screw wobbles when the z-axis goes up and down. If it wobbles do not do the z-axis top mod. My lead screws do not wobble and I have found that this improved rigidity and print quality quite noticeably. Thanks to @Robert_256299 for reminding me about this issue.
Z Axis Top:
This part adds a bearing to support the lead screw. This part is also the only upgrade that needs extra parts.
Parts Needed:
- 2x 608 Bearing
- 4x M3x18 Button Head
Replace bolts pointed out in pink with button-head versions so the bolt heads don't collide with the bearings.
Make sure to insert the bearing so it is flush with the top surface.
Example:
Mount like the original
Z Axis Bottom:
Mount it exactly like the original. Since there are no R/L markings on the parts just make sure the smooth rod holes are on the outside.
Y Motor Holder:
Mount it exactly like the original.
Y Belt Idler:
Mount it exactly like the original.