Free No account needed

Connector Foundry

Free browser library of 36 mounting parts for Gridfinity, openGrid, Skadis, GoPro and more, as STL, no account

Connector Foundry is a free browser and desktop tool for matching connectors across Gridfinity, openGrid, Skadis and GoPro. Free, no account; desktop apps for Mac and Windows. Exports STL. Last checked 13 October 2026.

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At a glance

Price: Free, no account; desktop apps for Mac and Windows
Runs on: Browser, Windows and macOS
Exports: STL
Multicolor: No, single color
Account: Not needed
Open source: Yes
Skill level: Easy: a few settings to tune
Best for: Matching connectors across Gridfinity, openGrid, Skadis and GoPro
Selling prints: Depends on each model's license The repository's own code and most parts are MIT. Per the README's licensing section, the openGrid board and snap run CC BY-NC-SA code but their generated tiles are CC BY, so prints are unrestricted; the DeckMate parts are Mechanism's files under CC BY-NC 4.0, which applies to prints and to anything fused onto them; the KLIPPT parts are CC BY-SA 4.0. Each part shows its source and license in the app.
How we checked: Made and downloaded a file Opened the web app without an account, rendered a 1x1 Gridfinity bin base in about 10 seconds and downloaded its STL (41.5 x 41.5 x 7 mm); also opened the GoPro buckle and DeckMate parts, the Bench and the settings
Checked by: Mike Janssen
Last checked: 13 October 2026

Open generator

Sources: Connector Foundry web app, Connector Foundry on GitHub (parts list and licensing), Connector Foundry desktop releases (checked 13 October 2026)

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What is Connector Foundry?

Connector Foundry is a library of 3D-printable mounting interfaces that you set up and export in the browser. It has 36 parts in 12 systems: Gridfinity bin bases, bins and baseplates; openGrid boards, snaps and openConnect and MultiConnect snaps; GoPro two-prong and three-prong buckles; Mechanism DeckMate parts; KLIPPT cable clip bases and clip mounts; Honeycomb Storage Wall panels and inserts; Skadis boards and pegs; MOLLE spines and panels; an Arca-style camera plate and a tripod socket; BitBeam beams and plates; plain plates, posts and dovetails; and 2020 aluminum extrusion fittings such as T-slot tabs, corner brackets and end plates.

In the Library tab you pick a part, change its numbers (grid size, magnet and screw holes for a Gridfinity base, nut pocket and leg size for a GoPro buckle), render it and download the STL. Each part is marked exact, when it comes from a reference implementation or a published spec, or parametric, when it is a starting point to check against your own hardware, and each has a short print note. The Bench tab attaches up to three parts to a base, fused, bolted, snapped or pinned, and can import your own STL, STEP or 3MF. The Holes tab adds screw holes, countersinks, nut traps and heat-set insert bores by clicking a face. A settings panel sets the fit clearance for your printer.

It is free, needs no account and renders on your own device with OpenSCAD; there are also desktop apps for Mac and Windows. The code is open source under the MIT license, but some parts keep the license of the design they come from: the DeckMate parts are Mechanism's own files under CC BY-NC 4.0, which also covers prints of them, and the KLIPPT parts are CC BY-SA 4.0. It suits makers who build wall, desk and workshop setups across several mounting systems and want the connectors to match.