K'Nex Red Gear Replacement
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Estimated printing price per file
€0.73 – €0.89 net (excluding VAT)
For file: knex_red_gear_v3_printable_0.2mm_PLA_MK3S_52m.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: €0.81 excluding VAT (range midpoint).
- Weight reported by the author
- 9 g
- Print time reported by the author
- 52.2 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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A replacement for the red K'Nex gear, part 90985.
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Updated at source:
Model information
- Source
- Printables
- Category
- Building Toys
- License
- Creative Commons — Attribution — Share Alike
This is a replacement for the large red gear in K'Nex toy sets, and includes the hooks and holes for the pink/brown clip to fit into, as well as smooth teeth to mesh cleanly with chains or other gears. This appears to be K'Nex part 90985.
There are two versions: a “printable” version and a “normal” version. The “printable” version is best for an FDM (plastic extruder) printer, as it does not have empty space on the bottom of the gear, which would otherwise require supports which could be difficult to remove. The “printable” version should be sufficient for all normal K'Nex uses, as the pink/brown clip will fit into either side of it anyway. Nonetheless, the “normal” version is available for those with SLA / SLS printers, or who want a more normal-looking piece.
FreeCAD files for both both versions are included. Please do not sell this model without contacting me first.
Printing
- Rafts: no
- Supports: no (if using the “printable” version, as recommended)
- Infill: 15% (less would likely be fine, but has little benefit for this piece)
- Perimeters: 2
- Layer height: 0.20mm
- Material: PLA (others would likely work)
- Other: I would generally recommend turning on the expert setting “Avoid crossing perimeters”, as it will keep the teeth slightly neater by reducing stringing artifacts from movements between teeth, and has effectively no print time impact.