◆ Plaster

Dungeon floor tile mold

Six 2 x 2 inch flagstone floor tiles for D&D and wargaming terrain, cast in plaster in a printed tray.

Make your own tray mold
3D render of a printed orange tray with six square flagstone tile cavities, and three white plaster dungeon floor tiles in front
Plaster ~78 g Pro early access

A printed tray for six dungeon floor tiles, each 2 x 2 inches (50.8 mm) and 6 mm thick, the same footprint and thickness as the common printed tile systems. Every tile carries four 1 inch squares of irregular flagstones, the grid joints cut a little deeper so a miniature always reads its square.

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Made with our tray mold generator in its rigid tray mode: print the tray once, wipe in release, and pour casting plaster or dental stone straight in. A tray of six sets in about an hour, so an evening of pours floors a whole dungeon for the price of a bag of plaster, where printing the same tiles would take days of machine time.

Paint them like any terrain: a black or dark grey basecoat, a grey drybrush, and a wash in the joints. The zip carries the tray exactly as the tool exported it, one tile on its own as an STL, the master uploaded to the tool, and a print and pour sheet with the volume of each cavity.

Shown as a 3D render of the printed tray with three plaster tiles in front, not a photo.

What you need

3
  • Casting plaster or dental stone, about 14 ml per tile
  • Mold release, petroleum jelly or cooking spray
  • Black primer, grey paint and a dark wash for the joints

How to cast it

4

  1. Print the tray as exported, cavities up, no supports. PLA is fine: plaster only gets warm as it sets.

  2. Wipe a thin film of mold release, petroleum jelly or cooking spray into every cavity, including the fine detail.

  3. Mix casting plaster to a pouring cream (add pigment now if you want colour), fill each cavity and tap the tray on the table for a minute to lift the bubbles.

  4. Leave it for an hour until the plaster is warm and hard, then flex the tray corners and tip the pieces out. Let them dry for a day before you add oils or paint.

Print details

3 h 20 minPrint time
~78 gFilament
1Printed parts
172 × 116 × 10 mmSize (W x D x H)
All print details
Print details
Cast materialPlaster
Printed parts1
Size (W x D x H)172 x 116 x 10 mm
Print bed needed172 x 116 mm, 10 mm tall
Filament~78 g
Layer height0.2 mm
Infill15%
SupportsNot needed
DownloadZIP: printed tray (STL) + one floor tile (STL) + tool master (STL) + print and pour sheet
Added2026-09-25

Pro early access until October 25, 2026, then free with any account.

Make your own tray mold →

Made with the free Tray mold generator. Upload your own model and get the same kind of mold built around it, in your browser.

Free for personal use. Selling the pieces you cast needs a commercial licence (Pro or Founder); passing on the file itself is not permitted on any plan. Full terms.

New to casting? Read the ice cube tray mold guide.

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Questions about this design

Are the dungeon floor tiles on a 1 inch grid?

Yes. Each tile is 2 x 2 inches with the 1 inch squares marked by deeper joints, the grid that D&D and most skirmish games use for 25 to 32 mm miniatures. Lay them edge to edge on a table or glue them to a board.

What plaster is best for the dungeon floor tiles?

Dental stone or a hard casting plaster such as Hydrocal or Ultracal. Plain plaster of Paris works but chips at the corners. Scrape the back flat with a ruler while the plaster is still soft, so every tile sits level.

How do I paint plaster dungeon floor tiles?

Seal the dry tiles with a spray primer or watered PVA first, since raw plaster drinks paint. Then a dark basecoat, a lighter grey drybrush over the stones, and a black or brown wash in the joints. A few tiles with a green wash read as damp.

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