This is a Modular Castle / Fort based on “Fort Nandar” from Storm King’s Thunder (see my note below for more info about this and the history of this project).
This is the central place for free Patreon updates on this project. Once there are paid Patron perks I’ll add a link to that post here.
Patreon Perks to date:
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Old perks removed but comment below with what you’d like to see – technically you’re all owed 3x perks for 100, 200 and 250 patrons here!
Print Instructions
You can print the FULL castle or the “flat stack” / bottom version of it. For print settings I’m recommending 2 wall loops and 5% infill density. This can be printed entirely supportlessly but small supports shouldn’t hurt!
Project Updates
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Sept 4, 2026 – Updated to V3 Fort Files
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V3 is the latest greatest of the modular terrain set fully compatible with Modular Barovia’s Death House and Church of Barovia (found on Kickstarter here: https://goto.adamnant.com/l/modular-barovia-1 )
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Changelog
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V3 offers better geometry, size adjustments and openlock clip adjustments
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Higher rooftop crenels
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Removed older versions (still available via Google Drive but not here)
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Mar 2, 2026 – Added V2.2 Plain Fort files
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Test printing on the textured version is done and I found the source of a fit issue so I’ve applied that fix to the plain files and updated them here. To avoid confusing versions I’ve removed the v1 and v2.0 files. They’re still available on Google Drive or if you really want them feel free to reach out and I’ll share them with you but these 2.2 files are better. I’ve also removed the interior walls and doors while I do some updates on those – thanks for your patience here!
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Changelog
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Fixed fit issue (top dowels were slightly misaligned on one side)
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Added extra open lock clips to the stair parts so that they are more secure
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Removed some of the destructive “flattening” that was being done so the structure is a tiny bit larger (but still fits with parts V2)
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Added a slight bevel to all straight edges
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Temporarily removed the v1 doors and interior wall files while their v2 versions are in development
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Feb 22, 2026 – Added V2 plain Fort files
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I’ve removed the initial fort wall files and will be updating the interior walls soon. This new version introduces some breaking changes like increasing overall size and introducing OpenLock clips in place of the bottom dowels. The bevels on the 2nd and 3rd floor baseboards were also removed since this introduced extra complexity without adding much more value. This version is also compatible with the textured variant that is an exclusive model.
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Feb 6, 2026 – Added Textured Fort Teaser Files
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I’ve managed to create a first draft of these and decided I’d include them here. The full textured structure will be Patreon exclusive – I’ll share a 100% discount / coupon code with all patrons (free and paid) once the structure is published. Files will also be in Google drive. I think it’s looking really nice.
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Jan 29, 2026 – First Publish V1
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I’ve finally made some solid progress on my Fort Nandar project here from June of last year and I’m publishing the first complete version of it today. I spent much of January 2026 building a system with Geometry nodes to create the exterior walls, grid flooring, print in place doors, dowels + pins to hold it all together. After a TON of test printing I’m happy to say that the untextured version is in a “publish worthy” place and something you can print for your games. I’m still working on this so there should be some version updates over the coming weeks etc… but the new parts should be compatible with what is shown here.
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Project Notes
Here is the original version of the Fort for reference: https://www.thingiverse.com/thing:7062060
This is based on “Fort Nandar” from the Storm King’s Thunder adventure. In there it’s in ruins but it seemed like a really neat structure and something that I wanted to try making so this is the result. The actual Fort Nandar has a slightly different profile and would be twice as big as this one. I might try creating, publish + slice apart something that like in the future but this ~50% scale version is a bit more playable and budget friendly – you can pretend that each square in this is 10ft and it’s a pretty close proxy to the real deal.