Is this 3D model free to download?

Yes, Window handle child lock 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 Mugface, 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.

Window handle child lock 3D printable model by Mugface

Window handle child lock

Source: Thingiverse by Mugface

The Window handle child lock is a free printable 3D model from Thingiverse by Mugface. Designed with a close fit. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

30 saves Source: Thingiverse Updated 2026-10-24 License: CC-BY-NC-SA · non-commercial Category: Home & Organization

Tags: child proof, child proofing, child safety, childproof, children safety, window

About this model

Designed with a close fit. A drawing is included to check whether it will fit to your handle. And a step file for easier mods. A 138mm long 4mm steel rod is needed. A stud can also be used. It remains completely concealed. A magnet is needed to remove it. Alternatively, you can pre drill a 2mm hole from the bottom at the mark and push the rod with a needle. Holes in part #2 are meant for optional TPU inserts to make the fit to the handle snug.

Frequently asked questions

Is this 3D model free to download?: Yes. Window handle child lock 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 Mugface.
Who made this model?: Designed by Mugface, 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.