Is this 3D model free to download?

Yes, Project Cervantes- New Plastic Kit Upper Arm Adapters [FREE] is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by MyMiniFactory. Use the "Download from MyMiniFactory" 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 John Bear Ross, published on MyMiniFactory. 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.

Project Cervantes- New Plastic Kit Upper Arm Adapters [FREE]

Source: MyMiniFactory by John Bear Ross

The Project Cervantes- New Plastic Kit Upper Arm Adapters [FREE] is a free printable 3D model from MyMiniFactory by John Bear Ross. The new plastic Cerastus kits from GeeDubz are nice. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MyMiniFactory

30 saves Source: MyMiniFactory Updated 2026-09-02

Tags: adapter, modular, weapon, mecha, project, mech, arm, upper, cervantes, cerastus

About this model

The new plastic Cerastus kits from GeeDubz are nice. The problem is that their Cerastus upper arms are not compatible with their injection-molded Questoris and Dominus upper arms. You can't swap weapon arms. A missed chance at intra-line modularity, in my opinion. Likewise, folks who bought my Cervantes weapons to fit to factory kits found the parts didn't quite fit, even though they usually fit on other Factory kits. These solve that problem. Here are upper arms that enable you to use my line of Project Cervantes weapons on GeeDubz factory Cerastus kits. If you magnetize at the elbow with 12mm x 3mm magnets already, these are ready for you to print out and swap those existing weapons with just the addition of a magnet (remember your polarities).

Frequently asked questions

Is this 3D model free to download?: Yes. Project Cervantes- New Plastic Kit Upper Arm Adapters [FREE] is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link above to open the original listing.
Where is the STL hosted?: The download is hosted by MyMiniFactory, not by Thinger. We link you directly to the original listing by John Bear Ross.
Who made this model?: Designed by John Bear Ross, published on MyMiniFactory. 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.