Prusa MMU2 selector Magnet Upgrade (R2)
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This is a Magnet improvement to the MMU2S (R2) Selector PINDA part.
- Rating
- 5 / 5
- Likes
- 69
- Downloads
- 235
- Makes
- 4
- Views
- 3,126
- Reviews
- 6
Updated at source:
Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- GNU General Public License v3.0
This is a Magnet improvement to the MMU2S (R2) Selector PINDA part.
The only modification, I made, was to place a 6x1 mm round super magnet under the steel ball and filament path.
This magnet will keep the steel ball down when the filament is redrawn. This will prevent false filament jam errors caused by filament stringing.
Model created from SCAD source to get a high resolution result.
Note: It seems that some of the 7 mm balls from Prusa are made of stainless steel instead of ordinary steel. This means that the ball is not attracted sufficiently by the magnet (does not work).
If the ball in your MMU2 is only weakly attracted to a magnet, it is probably made of stainless steel.
The easiest solution is to replace the ball with a regular 7 mm steel ball.
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