Assembling CORE One+ from a combined kit (C1 + upgrade pack)

Thank you for purchasing the Prusa CORE One kit. Your package includes parts for both CORE One and CORE One+. If you want to assemble the CORE One+, this article will guide you through the upgrade process. Some parts look similar, but only the upgraded versions must be used for CORE One+.

To assemble the CORE One, follow the instructions in the manual available at prusa.io/core-one.
To assemble the CORE One+, follow the instructions in the manual at prusa.io/core-one-plus and use this article as a supplement.

Note: If a part or step is not explicitly mentioned in this article, follow the standard CORE One+ instructions. This article only highlights the differences and critical parts for upgrading from C1 to C1+. For all other steps and parts, refer to the official CORE One+ manual.

What’s in your package?

Your package includes:

Prusa CORE One kit (some parts will not be used).
Upgrade pack for CORE One+ (contains new parts required for the upgrade).

Important: Always check the Parts list below before assembling.

Parts list: What to use and what to avoid

Nextruder

Chapter 6. Nextruder assembly

Printed parts

Part name	Source	Use?	Image
Printhead-cover-right-lever	CORE One+ Printed Parts UPG	Yes
Printhead-cover-right	Core XY assembly 2/2 - printed parts CORE One	No

Filament sensor & Spool holder

Chapter 7. Bodywork & Electronics

Printed parts

Part name	Source	Use?	Image
Filament-sensor-body	CORE One+ Printed Parts UPG	Yes
Filament-sensor-cover	CORE One+ Printed Parts UPG	Yes
Filament-sensor-lever	CORE One+ Printed Parts UPG	Yes
Filament-sensor-switch	CORE One+ Printed Parts UPG	Yes
Puck-universal	CORE One+ Printed Parts UPG	Yes
Filament-sensor-cover	Filament sensor & Spool holder assembly - printed parts CORE One	No
Filament-sensor-body	Filament sensor & Spool holder assembly - printed parts CORE One	No
Filament-sensor-lever	Filament sensor & Spool holder assembly - printed parts CORE One	No
Spool-holder	Filament sensor & Spool holder assembly - printed parts CORE One	No

Fasteners

Part name	Source	Use?	Image
M3w washer	Fasteners CORE One+ UPG	Yes

Top panel

Chapter 8. Trim, Door & xLCD

Printed parts

Part name	Source	Use?	Image
Upg-vent-block	CORE One+ Printed Parts UPG	Yes

Fasteners

Part name	Source	Use?	Image
M3x12rT	Fasteners CORE One+ UPG	Yes

Note: In the upgrade pack, you will also find a + logo sticker to place on the door according to the instructions in the CORE One+ manual. Additionally, you will find a serial number (SN) label, which must be affixed as indicated in the article Original Prusa Serial Nubmer.

Universal spoolholder

Chapter 9. Calibration & First run

Printed parts

Part name

Source

Use?

Image

Spoolholder-static

(CORE One Series - spoolholder)

CORE One+ Printed Parts UPG

Yes

Other

Part name	Source	Use?	Image
O-ring	CORE One Series - Spool Holder	Yes

For any further questions, refer to the official CORE One+ manual or contact our Customer support.

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Assembling CORE One+ from a combined kit

(C1 + upgrade pack)

What’s in your package?