Elegoo Neptune 3/4 plotter
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Preliminary estimate for PETG
€0.22 – €0.26 net (excluding VAT)
For file: !!! Print rail and guide with ironing !!!.gcode
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: €0.24 excluding VAT (range midpoint).
- Weight reported by the author
- 3 g
- Print time reported by the author
- 15 min
- Source material
- PET
- Estimate material
- PETG
- 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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Spring loaded plotter with increased rigidity
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Model information
- Source
- Printables
- Category
- Other Printer Parts & Upgrades
- License
- Creative Commons — Attribution
Always wanted to try plotter attachment, but I decided to make my own with few specific features in mind:
High rigidity and good precision of lines.
Spring loaded, so it provides more or less consistent force. And it works fine in case you have crooked bed.
Universal pen holder that can hold anything from 6mm to 16mm in diameter.
It turned out really well and I'm happy with result. Despite it's a bit tricky to print properly, it is worth it
Bill of materials:
M2x6 with thin-head - 2 pieces
M2x4 (or another M2x6) with thin-head- 1 piece
M4x20 (not longer) - 1 piece
Spring from automatic pen (20-25mm long)
Important:
Originally designed to work with Neptune 3 Pro, so it'll work with other Neptune 3/4 printers with same extruder shell. In case you don't sure, print "mount.stl" and try to install it.
You'll need fine tuned ironing for guide and insert parts and place them as shown, otherwise you'll have issues with movement at lower end. Ironing settings in my case were:
Speed 30mm/s
Flow 20%
Inset 0.21mm
Spacing 0.15mm
I printed it with 0.4mm nozzle, 0.16mm layer height, PETG, 4 wall lines, 8 top/bottom layers, 20% infill, no supports - works fine.
Check this before full assembly:
There are 3 types of guide part with different gap. Start with 0.10mm and install it to rail. It must move freely, but not be loose. Too loose? Try 0.10mm_P version. Too tight? Probably 0.15mm will do. In worst case, you can loose screws a bit or cut corners of guide slightly - that will work too.
Assembly:
Install knob onto M4x20 and screw both parts of pen holder together with it. Then install guide part to pen holder with M2x6, then insert them to rail and screw it to mount part with M2x4. As final step - install spring.
Hint: you can lower spring force by carefully heating outer coils of the spring with lighter - it's a bit easier to control than just cutting coils. Or if you need just few more milimilers stretch spring a bit.
Few tricks:
I recommend to attach paper with masking tape to the smoothest side of your pei, you can also use clips if you know what you're doing (be careful pls)
Create new printer profile in slicer with diferent bed dimensions:
X = your original width - 50mm (or create additional extruder with -50mm X-offset)
Y axis almost alligned, so you can use original depth
Insert this as start G-code, it'll disable wiping and extruding:
M220 S100M221 S0
G90
G28
M420 S1 Z5
G92 E0
In slicer set printing temperature and build plate temperature to 0. Enable retract, but set it to 0mm distance and 0.2mm retraction minimum travel, disable combing and enable z-hop with 1-1.5mm height.