In store at 2d print world Aylesbury
In store at 2d printworld Aylesbury

Extended bed kit for Prusa

Extended bed kit for Prusa - Image 1
Extended bed kit for Prusa - Image 1
Extended bed kit for Prusa - Image 2
Extended bed kit for Prusa - Image 3

New bed expansion kit for your Prusa i3. This kit enables you to extend the printing area to 20×30 cm. The Y axis is now more robust and easier and faster to assemble.

The kit includes:

Acrylic bed and glass printing surface

The acrylic bed holds the glass printing surface. At the same time it is fixed to your aluminium Y axis using screws and springs. The springs allow the height of the printing surface to be adjusted, while absorbing unexpected inferences with the hot-end. The acrylic based is designed for 8mm material. The corners have been rounded to avoid mechanical stress. Thanks to this we guarantee long term performance by avoiding cracking of the acrylic. - See more at:

Voids have been made in the acrylic bed, removing 36% of the material of the solid part and reducing the weight considerably. The voids are made to match the aluminium Y carriage in order to achieve aesthetic equilibrium of the whole axis. - See more at:


The rods have been internally drilled with M4 threads. This enables them to be screwed in directly to the front and rear aluminium mounting plates. Consequently the assembly is made easier, the rods are shorter and the printed corners are not required anymore. The nylon washers serve to eliminate structural tension caused by variations (or tolerances) in the length of the rods, and also to absorb vibrations (and noise).

- See more at:

Front and rear aluminium mounting plates

These parts are a derivation of the PowerCode 3 and GalaCC 4  equivalent parts. They have been modified in order to screw in the rods (previous versions used printed parts for assembly). These plates have been designed for 4 mm aluminium.

- See more at:


To assemble the new bed you must follow these steps:

  1. Print your own new parts. Download them from here.
  2. Assemble the new Y axis following the steps in the diagrams. Pay attention as you will need to reuse some of your printed and non-printable parts.
  3. Upgrade the firmware for the new printing area.

Do not dismantle your printer until you have printed the new parts

Printable Parts

End-stopY axis Endstop Holder This part is derived from the corresponding Prusa i3 Hephestos part. It has been made larger in order to fit the new length of the rods.
This part has been derived from the PowerCode Y axis belt tensioner. An M3 screw has been used to facilitate its acquisition. A guiding appendix has been added to avoid the part to rotate around the screw, solving this problem that was present in the PowerCode Pieza fijadora 1Y axis belt tensioner
Pieza fijadora 2Y-Axis motor holder This part is derived from PowerCode and GalaCC printer. It’s used to secure the Y axis motor to the rear mounting plate.


Your current firmware may be configured to limit the Y axis length to 200 mm. You  will need to upgrade the firmware in order to be able to print on the full 300 mm of your new bed.

  • You can upload the firmware using Cura 3D. This video explains how to do it.


Product Code: A10010