Rear Filament sensor for Prusa XL
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Estimated printing price per file
€0.58 – €0.70 net (excluding VAT)
For file: FSMod_0.6n_0.2mm_PLA_XLIS_27m.bgcode
This is an estimate for one file. You’ll confirm the exact price before ordering.
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File used for this estimate
Average indicative estimate: €0.64 excluding VAT (range midpoint).
- Weight reported by the author
- 12 g
- Print time reported by the author
- 27 min
- Source material
- PLA
- Estimate material
- PLA
- Estimate printer
- Bambu Lab P1S - 0.4 nozzle
- Estimate process
- 0.20mm Standard
Indicative estimate for the selected file only, based on the author’s weight and print time. File variants are not added together. The final price is calculated after file analysis.
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Modifying plate to allow the side filament sensors of the XL to be mounted at the rear of the printer.
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Updated at source:
Model information
- Source
- Printables
- Category
- Prusa Parts & Upgrades
- License
- Creative Commons — Public Domain
I had limited side room but sufficient vertical room for my 5 head Prusa XL, so I wanted to mount the spools above the printer, however the placement of the side filament sensors made this an awkward arrangement.
I made the bracket that allows you to mount both of the side filament sensors on the rear honeycomb allowing you to feed the filament directly down into the sensor.
Materials Needed
What you need:
- (3x) M3n nuts (in many spare part bags)
- (1x) M3x10 screw
Print instructions
Print both the FSMod and Ring together.
You will need to pause the print at 6.2mm to add the captive M3n nuts to the print.
Printer Brand: Prusa
Printer: XL
Rafts: No
Supports: No
Infill: 20%
Filament: Prusament PLA Black
Post-Printing
You will need to clean the screw holes on the bottom where the bridging happened to ensure a screw passes through cleanly.
Assembly
Attach sensors to FSMod plate
- Line up the side sensor with the slot so the screw holes align on the correct side.
- Using the existing screw, tighten down each sensor against the plate.
Reroute filament sensor cables
- If you already have the side filament sensors fitted, remove them keeping the screws.
- Remove the covers from the Buddy Box (loosen 4 screws) and the upper cable cover (remove 4 screws)
- Cut the cables ties and free the left and right filament sensor cables from the bundle.
- Reattach the rest of the cables leave the filament sensor cables free.
- Move the filament cables so they are existing the Buddy box in the centre.
- Reattached the upper cable cover
- Reattach the Buddy Box cover, making sure that the two filament sensor cables exit the box via the slot in the top designed for the three tool changer cables.
Attaching Filament sensor to XL
- Line up the honeycomb on the filament sensor with the honeycomb on the back of the XL with the screw hole lining up with the top centre hole in the XL.
- Place the ring onto the M3x10 screw.
- Screw the FSmod part onto the XL from the inside of the printer out.
Still to do
I still need to get some longer PTFE tube to run up to the spools to make loading a little similar, but other than that working well.