Is this 3D model free to download?

Yes, CTC Prusa i3 Pro B - MK8 to MK9 Extruder Upgrade is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by tom666, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

CTC Prusa i3 Pro B - MK8 to MK9 Extruder Upgrade 3D printable model by tom666

CTC Prusa i3 Pro B - MK8 to MK9 Extruder Upgrade photo 1

CTC Prusa i3 Pro B - MK8 to MK9 Extruder Upgrade photo 2

CTC Prusa i3 Pro B - MK8 to MK9 Extruder Upgrade photo 3

CTC Prusa i3 Pro B - MK8 to MK9 Extruder Upgrade photo 4

CTC Prusa i3 Pro B - MK8 to MK9 Extruder Upgrade

Source: Thingiverse by tom666

The CTC Prusa i3 Pro B - MK8 to MK9 Extruder Upgrade is a free printable 3D model from Thingiverse by tom666. BOM: * 1x M3x6 countersink screws (base) * 1x M3x18 countersink screws from the original extruder (lever) * 1x M3x10 countersink screws (bearing) * 2x M3 washer (bearing) *. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

459 saves Source: Thingiverse Updated 2026-10-17 License: CC-BY-SA · commercial OK 10 makes Category: 3D Printer

Tags: CTC, CTC prusa i3, extruder, MK8

About this model

BOM: * 1x M3x6 countersink screws (base) * 1x M3x18 countersink screws from the original extruder (lever) * 1x M3x10 countersink screws (bearing) * 2x M3 washer (bearing) * spring (thickness 1.2mm, inner diameter 6mm, outside diameter 9mm, height 16mm) * bearing from the original extruder CTC Printer after upgrading:

Frequently asked questions

Is this 3D model free to download?: Yes. CTC Prusa i3 Pro B - MK8 to MK9 Extruder Upgrade is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
Where is the STL hosted?: The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by tom666.
Who made this model?: Designed by tom666, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?: Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.