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Modelo 3D Prusa MINI coreXY por SE no Printables

Descrição

Simple and low cost upgrade of Prusa MINI to coreXY motion system. It uses much more of the original MINI than other “upgrades”. It keeps the original extruder, hotend, board, display, steel rods, bearings, bolts, and ALU extrusions.

First print:

Advantages

More stable frame
Enclosure panels mountable on the frame directly (improves rigidity)
Lightweight
Higher air temperature (printing at the top)
Higher bed temperature (110 °C)
Higher chamber temperature if enclosed (smaller chamber)
Smaller footprint
Bigger printing size (Z)
Optional direct drive upgrade to Sherpa/TBGS/HGX extruder mount (43.5 mm bolt span) - requires different cable connector
Steel rods or linear rails on Y axis

Disadvantages

Slower speed (300 mm/s) due to chip speed limitation
Higher current (450 mA) to keep original acceleration (4000 mm/s²)
Requires non-original MINI mainboard or breaking of the appendix (original mainboard) to load alternative FW ([https://github.com/Snake-Edition/P32-FW/releases](https://github.com/Snake-Edition/P32-FW/releases))
Some mechanical work to do (no re-wiring or soldering)
Original input shaper parameters won't work as good
More noise (amplified by the frame and panels)

Size comparison

	Prusa MINI	MINI coreXY
Transport X	330	300
Transport Y	320	300
Transport Z	380	520
Case X	430	310
Case Y	500	310
Case Z	470	570
Print X	180	180
Print Y	180	180
Print Z	180	255
Print space	5.8 l	8.2 l
Enclosed space	101 l	54 l
Weight	4.5 kg	5.3 kg
Weight enclosed	14 kg	~ 9.5 kg

Parts to buy (minimal)

1x 3030 extrusion 240 mm
2x 3030 extrusion 320 mm
8x idler
2x 1100 mm 2GT-6 belt
bolts TBD

Parts to buy (optimal)

parts for minimal mod
1x 3030 extrusion 300 mm (bottom)
2x 3030 extrusion 240 mm (bottom)
2x 3030 extrusion 285 mm (bottom)
1x 3030 extrusion 300 mm (top)
1x 3030 extrusion 240 mm (top)
2x 3030 extrusion 270 mm (top)
5x enclosure panel
door
bolts and nuts TBD

If you have another MINI frame, you can use all three extrusions.

Frame Variants

L frame (cheap)
complete bottom frame
complete frame (top and bottom)

Direct drive extruder (HGX)

Fix the cable connector
Insert nuts into the top mount
Insert ~65 mm PTFE tube into hotend heatsink. The correct length depends if you have original or non-original hotend. The correct length is if the extruder is “levitating” ~0.5 mm above the frame.
Use M3x12 and M3x16 (or 20) for extruder mounting
Adjust current and gear ratio in slicer profile:
- M906 E500 ; HGX higher current (500 mA)
- M92 E570 ; HGX steps per mm

Comments

Use provided .ini file for PrusaSlicer. One for original extruder, one for HGX.

No manual available (yet).

Printables

Prusa MINI coreXY

Publicado em 13 de jun de 2026

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Categoria Prusa Parts & Upgrades