STRATA - Topographic Coasters With Your Name

One mountain, six altitudes, one name

STRATA is a set of six topographic coasters. Each coaster shows the same mountain sliced at a different altitude, from 600 m up to 3600 m. Lay them out in order and the summit grows coaster by coaster.

Put them back in the holder and the rims line up into a single block of rock strata, with your name running across all six layers. A terraced summit cap closes the stack.

What is in the set

•      6 coasters, 98 mm wide and 5 mm thick, elevations 600 / 1200 / 1800 / 2400 / 3000 / 3600 m

•      Holder, 108 mm wide and 40 mm tall, with a key rib that keeps every coaster aligned

•      Summit cap: the full mountain in 21 terraces, with a snow peak in the accent colour

•      Customizer for the name, font, letter size and colours

How it works

•      Each coaster carries one horizontal slice of the name on its rim. On its own it reads as an abstract stripe pattern.

•      A notch at the back of every coaster slides onto the rib of the holder, so the slices can only stack in one position. The name reads perfectly every time.

•      The top of each coaster is flat where the glass sits: the rim, the contour lines and the summit plateau are all at the same height. Condensation collects in the recessed field between the lines.

•      Underneath: four recesses for 10 mm felt pads, plus the coaster number and altitude so the order is easy to restore.

Print profiles (made and test-printed on the Bambu Lab X2D)

•      Two colours, 0.4 nozzle, 0.16 mm layers: about 8 h in 3 plates, about 201 g main colour + 13 g accent

•      Single colour, 0.4 nozzle, 0.16 mm layers: about 6.5 h in 3 plates, about 201 g

•      Single colour, 0.2 nozzle, 0.12 mm layers: about 25 h in 3 plates, about 166 g, for the finest contour lines

•      Settings: 3 walls, 15% gyroid infill, no supports, no brim, seam at the back (hidden behind the holder wall)

Printing tips

•      Cold drinks: PLA is perfect. Hot mugs: print the coasters in PETG, because PLA starts to soften around 60 C.

•      Two colours: pick strong contrast. Charcoal with sand, black with white or navy with gold all read well from across the room.

•      Each plate fits inside 212 x 205 mm, so it prints on any 220 mm-class or larger bed (X1, P1, A1, H2D, X2D, MK4, Core One and similar).

•      Fit: the notch and the rib have 0.3 mm of clearance per side. If your printer over-extrudes, sand the rib lightly.

•      Optional: four 10 mm self-adhesive felt pads per coaster for a soft, quiet base.

License

Original design. CC BY-NC-SA 4.0: free for personal use, remixes welcome with credit, no commercial resale of prints or files.

Files

•      STRATA_HOME_STL_two_colour.zip: one folder per part, with the main colour and accent colour bodies as separate STLs

•      STRATA_HOME_STL_single_colour.zip: one STL per part, name engraved

•      strata.scad: the customizer (OpenSCAD 2021.01 or newer)

•      STRATA_HOME_2colour_X2D_0.4.3mf and STRATA_HOME_1colour_X2D_0.2.3mf: ready Bambu Studio projects

Two colours in PrusaSlicer

•      Select all STLs of one part folder (for example Coaster_1_600m) and drag them in together.

•      Answer Yes when PrusaSlicer asks to load them as a single object with multiple parts.

•      Set the main colour body to extruder 1 and the accent parts to extruder 2.

•      Repeat for the other parts, or load one plate of three coasters at a time.

Your own name

•      Open strata.scad in OpenSCAD, set Name and the other options in the Customizer panel and render with F6.

•      Install the free Inter font (Google Fonts) to get the same letters as the photos.

•      For two colours, set Export_colour to Main colour only, export, then Accent colour only, export again, and load both files as one multi-part object.

Update

Oct 27, 2026: all files refreshed (v4). The altitude label on each coaster now curves along the rim.

NEW - Bambu Lab H3C: STRATA_HOME_2colour_H3C.3mf puts each colour on its own PrintTool (almost no purge), re-centred on the 330 x 320 mm H3C plate, with the official H3C machine G-code. Sliced in Bambu Studio 2.09.