Is this 3D model free to download?

Yes, Soldering hands / Locking ball joint / Socket arm 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 Intru, 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.

Soldering hands / Locking ball joint / Socket arm 3D printable model by Intru

Soldering hands / Locking ball joint / Socket arm photo 1

Soldering hands / Locking ball joint / Socket arm photo 2

Soldering hands / Locking ball joint / Socket arm photo 3

Soldering hands / Locking ball joint / Socket arm photo 4

Soldering hands / Locking ball joint / Socket arm

Source: Thingiverse by Intru

The Soldering hands / Locking ball joint / Socket arm is a free printable 3D model from Thingiverse by Intru. To assemble sockets with balls you will need a hot air gun or at least a hairdryer that can blow hot air (you can also try it with boiling water (thanks HMC123 for advice) or. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

1,082 saves Source: Thingiverse Updated 2026-10-31 License: CC-BY · commercial OK Category: Tools & Workshop

Tags: arm, ball, Ball and Socket, flexible, flexible hand, hands, holder, socket, soldering, soldering hands, soldering stand, stand

About this model

To assemble sockets with balls you will need a hot air gun or at least a hairdryer that can blow hot air (you can also try it with boiling water (thanks HMC123 for advice) or open fire, but be careful). The socket is way smaller than the ball, so it has to be heated before pushing the ball inside. Then tighten the socket with a tightener ring until it will cool down (don't push it too hard, because if you tighten the socket too hard, the ball wouldn't be able to move inside). Cool thing is that if it gets loose, you can heat and tighten it again. :) I decided to make this because other socket arms were very fragile, hard to assemble and become loose very fast. It works best with PETG filament, because it shrinks more, but should work with PLA too. I used these hands to improve this cheap s…

Frequently asked questions

Is this 3D model free to download?: Yes. Soldering hands / Locking ball joint / Socket arm 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 Intru.
Who made this model?: Designed by Intru, 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.