Layer Height Changes Everything for Miniatures
For most 3D prints, the difference between 0.20mm and 0.12mm layer height is subtle. For dollhouse miniatures, it is the difference between a piece that looks 3D printed and one that looks like a finished product.
Small scale amplifies every surface imperfection. Layer lines that are barely noticeable on a large print are prominent on a 2-inch window frame. Getting layer height right is the single most impactful settings decision you will make for miniature printing.
Why Smaller Is Better for Miniatures
At 0.20mm layer height, each layer is 0.2mm thick. On a flat wall that is 30mm tall, that is 150 layers. The horizontal banding from those layers creates a texture you can see and feel.
At 0.12mm, the same wall has 250 layers. Each one is thinner, the transitions between layers are tighter, and curved surfaces look noticeably smoother. At 0.08mm on a fine detail piece, the surface quality approaches what you would expect from an injection-molded part.
The trade-off is time. A print at 0.12mm takes roughly 60-70% longer than the same print at 0.20mm. For a large refrigerator body that is a meaningful increase. For small shutter pieces or window frames that print in under an hour anyway, the extra time is barely noticeable.
Layer Height by Miniature Part Type
| Part Type | Recommended Height | Why |
| Large body pieces (fridge carcass, cabinet box) | 0.20mm | Large flat surfaces look fine at standard height. Time savings are significant. |
| Furniture faces and visible panels | 0.16mm | Visible surfaces benefit from reduced layer lines without excessive time cost. |
| Window frames and architectural trim | 0.12mm | Thin profiles need tight layers to look clean and avoid rough edges. |
| Working shutters and moving parts | 0.12mm | Precise tolerances for hinge pins and moving joints require fine layers. |
| Decorative moldings and detail pieces | 0.08-0.12mm | Raised detail and fine textures need the finest layers to read clearly at scale. |
| Hinge pins and small hardware pieces | 0.08-0.12mm, 100% infill | Small structural pieces need fine layers and solid infill for strength. |
The Practical Approach: Print in Batches
The most efficient way to print a complex miniature like the OreKo refrigerator is to separate parts by their required layer height and print them in batches.
Batch 1 at 0.20mm: The main refrigerator body, door panels, and any large structural pieces.
Batch 2 at 0.12mm: Handles, hinge components, the interior shelf details, and any visible trim pieces.
This approach gives you the best quality where it matters most and saves significant print time on the parts where fine detail is less critical. The Bambu Studio 3MF file included with OreKo models organizes parts for you, but you can always separate parts onto different plates with different process settings.
Variable Layer Height: A More Advanced Approach
PrusaSlicer and Bambu Studio both support variable layer height, where you can set different layer heights for different sections of the same model. The slicer handles the transition automatically.
This is particularly useful for the OreKo refrigerator, where the main body can print at 0.20mm but the door handle area and lower trim details benefit from 0.12mm. With variable layer height you get both in a single print job.
To use it in PrusaSlicer, load your model and click the Variable Layer Height button in the plater toolbar. In Bambu Studio, select the model and use the Height Range modifier feature to assign different process settings to different Z height ranges.
The Working Shutter Trick: Filament as a Hinge Pin
The OreKo miniature windows use a technique worth understanding before you start printing. The shutters are separate printed pieces that pivot on a hinge pin made from 1.75mm filament — the same filament already on your spool.
After printing the window frame and shutters at 0.12mm, cut a short piece of 1.75mm filament and thread it through the aligned hinge holes in the frame and shutter. The slight interference fit holds it in place without glue. The result is a working shutter that opens and closes smoothly.
For this mechanism to work cleanly, the hinge holes need to print accurately. That is why 0.12mm layer height is specified for the shutter components. At 0.20mm the hinge holes can be slightly misshapen, making the pin tight or creating binding during movement.
Print Settings Included with Every OreKo Miniature
Layer height, infill, and wall recommendations documented for every piece. Available on Cults3D.
