Paid

Terrain Tinker

Drag-and-drop builder for OpenLOCK tabletop buildings and dungeons, exported as STL

Terrain Tinker is a paid browser tool for custom D&D and wargame buildings and dungeons from OpenLOCK tiles. One-time purchase of $55 USD for the editor with 111 OpenLOCK models and unlimited exports. A free trial account includes 104 models and 2 STL exports, but no GLB or PNG export. Add-on model packs in the store cost $15 to $120 each. Refunds within 14 days on a fair-use basis. Selling prints needs a separate commercial license, bought by contacting them (no price listed). Exports STL, GLB and PNG. Last checked 26 September 2026.

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At a glance

Price: One-time purchase of $55 USD for the editor with 111 OpenLOCK models and unlimited exports. A free trial account includes 104 models and 2 STL exports, but no GLB or PNG export. Add-on model packs in the store cost $15 to $120 each. Refunds within 14 days on a fair-use basis. Selling prints needs a separate commercial license, bought by contacting them (no price listed).
Runs on: Browser
Exports: STL, GLB, PNG
Multicolor: No, single color
Account: Required to download
Open source: No
Skill level: Easy: a few settings to tune
Best for: Custom D&D and wargame buildings and dungeons from OpenLOCK tiles
Selling prints: On a paid plan The standard terms allow personal, non-commercial use only. Selling prints needs a separate commercial license that you request by contacting them; it requires the Terrain Tinker logo and credit on your product page and never allows selling or sharing the files.
How we checked: Read the tool page and docs Editor link redirects to a login page; the store lists the editor at $55 one-time with 111 models, and the trial page lists 104 models and 2 STL exports
Last checked: 26 September 2026

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Sources: Terrain Tinker editor price and included models, What the free trial includes, Commercial license terms (checked 26 September 2026)

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What is Terrain Tinker?

Terrain Tinker is a paid browser app for designing tabletop buildings and dungeons from ready-made OpenLOCK tiles, then exporting them as STL files for printing. You never model anything yourself. You pick floors, walls, doors, stairs, columns and roofs from a side panel and drag them onto a grid, where they snap into place. A room builder fills a drawn area with walls and floors, and you can stack several floors on top of each other.

When a build is done, you export it as separate clip-together OpenLOCK pieces with instructions, or as one combined STL. Print groups split a big build into chunks that fit your printer bed, and the tiles are made to print without supports. Files are prepared on their server, so a large export can take a few minutes. The full version can also export a colored GLB model for virtual tabletops and a PNG top-down map; neither is meant for printing.

The editor is a one-time $55 purchase that includes 111 models, and extra themed packs are sold separately. Owners of Printable Scenery sets can link that account to use those models. A free trial account gives you 104 models and two STL exports to test with. It suits D&D and wargame players who want their own layouts in a proven modular system, but it only runs in desktop browsers and prints are licensed for personal use only.

What you can make

Modular OpenLOCK buildings
Dungeon rooms and corridors
Multi-floor inns and houses
Single combined terrain models
Colored GLB models and top-down PNG maps for virtual tabletops

How to use Terrain Tinker

Create an account and open the editor in Chrome, Edge or Firefox on a desktop computer
Pick a model pack and drag floors, walls and doors onto the grid, or draw a room with the room builder
Add upper floors and set your printer's bed size under Print bed sizing
Open 3D Print, choose separate OpenLOCK pieces or one combined model, and press Prepare 3D Print
Download the STL files when they are ready and print them without supports

What you'll need to print it

Filament and parts that suit what you make with Terrain Tinker.

Matte PLA

Multicolor PLA

6 x 2 mm magnets

Also handy

Print removal and cleanup tools

Bambu Lab Print Finishing Kit Bambu Lab
Bambu Lab Maker's Supply ESD Stainless Steel Tweezers Set Bambu Lab

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Terrain Tinker pros

Drag-and-drop tiles and a room builder make a full dungeon or house layout quick, with no 3D modeling
Exports clip-together OpenLOCK parts or one combined STL, split into print groups that fit your bed
One-time price with unlimited exports, plus a free trial and upload of your own OpenLOCK STLs

Terrain Tinker cons

Paid, and the free trial stops after two STL exports
Desktop browsers only; phones and tablets are not supported and Safari is not recommended
Prints are licensed for personal use only, so selling them needs a separate commercial license