Home / 3D Printers
Best Open Source 3D Printer
Machines you can inspect, modify and repair without asking permission.
Top pick
The Prusa MK4S: published firmware, published hardware, every part on the shelf, and the best manuals in the hobby. It is also the least hackable here, since the firmware is Prusa’s own rather than Klipper.
Most open of all Voron 2.4 · Cheapest genuinely open Sovol SV08 · Open and enclosed Prusa Core One+
As cited in
| # | Printer | Spare parts | Firmware you can flash | Runs without the cloud | Support and parts | Build path | Enclosed |
|---|---|---|---|---|---|---|---|
| 1 |
Prusa MK4S most repairable
See review → Open Website ↗
|
Sold individually, and printable | Prusa’s own, not Klipper | Yes, Ethernet and LAN | Mature, best manuals in the hobby | Assembled or kit M | Costs extra |
| 2 |
Voron 2.4 most open
See review → Open Website ↗
|
Every part from a published bill of materials | Klipper native | Yes, self-hosted | Community only, no support line | Self-sourced kit, a weekend or longer | ✓ |
| 3 |
Sovol SV08 cheapest open
See review → Open Website ↗
|
Sold individually | Vanilla Klipper | Yes, WiFi and LAN | Thin; owners call it an email lottery | Kit, 90 percent built | Costs extra |
| 4 |
Prusa Core One+ open and enclosed
See review → Open Website ↗
|
Sold individually, and printable | Prusa’s own, not Klipper | Yes, LAN | Mature, spares stocked | Built, or a self-build kit | ✓ |
| 5 |
RatRig V-Core 4 largest kit
See review → Open Website ↗
|
Sold individually, no single support line | RatOS, Klipper based | Yes, self-hosted | Thin; complaints on record predate this model | Self-sourced kit, a weekend or longer | No, panels cost extra |
Nothing matches all of that. Loosen one.
M manufacturer figure V measured by an owner or reviewer ? unverified
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| Runs without the cloud | |||
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