FDM Slicer Settings for Terrain

The default profiles that ship with your slicer were not designed for tabletop terrain. They were designed to produce a decent-looking benchy and to hit the advertised print speed in a product demo. Terrain has different priorities: it needs to survive being picked up by the tower, painted with thick washes, and dropped on a hard floor at least once. The layer lines need to look acceptable at 30 to 50 centimetres, not in a macro photograph. And if you are building a full 4x4 table set, you need a profile that does not take three days per piece.

This article gives you specific settings for Bambu Studio and OrcaSlicer. Those are the two slicers worth using for terrain in 2026. Bambu owners use Bambu Studio; everyone else uses OrcaSlicer, which is the open-source fork of Bambu Studio with broader printer support. The Cura and PrusaSlicer debate is not relevant here.

Why default profiles underserve terrain

A general-purpose quality preset at 0.15 mm or 0.20 mm layer height will give you an acceptable-looking print, but it will also give you thin walls that flex when handled, sparse infill that transmits stress cracks to the outer shell, and support contact settings tuned to leave clean surfaces on smooth models rather than textured stone and brickwork.

Terrain also spends more time printing than most benchmarks assume. A small ruined tower at 0.08 mm layer height on a Bambu P1P takes roughly 13 hours. The same piece at 0.20 mm takes roughly 6 hours. Multiply that by twenty pieces for a board and the layer-height decision is also a time-budget decision. Default profiles do not make that trade-off visible.

The two slicers to use

Bambu Studio is the native slicer for any Bambu Lab printer (P1P, P1S, A1, A1 Mini, X1 series). It is tightly integrated with Bambu hardware, gets printer-specific tuning built in, and ships with presets that are actually calibrated for those machines rather than generic. If you own a Bambu printer, use Bambu Studio.

OrcaSlicer is a fork of Bambu Studio with support for non-Bambu printers. The interface is nearly identical, the profile system works the same way, and it receives frequent updates. If you own a Creality, a Prusa, a Bambu (yes, it works there too), or anything else, OrcaSlicer is the correct choice.

Both applications use the same profile concepts. The setting names and values in this article apply to both.

Layer height: the single most important setting

Layer height controls three things at once: surface quality, print time, and structural integrity. For terrain, the practical range is 0.08 mm to 0.28 mm.

0.08 mm is for hero pieces where surface quality matters. Think the centrepiece of a dungeon board, a set-piece castle gate, the display piece you will photograph. At 0.08 mm, layer lines largely disappear at table distance. The cost is significant: a small piece at 0.08 mm takes roughly twice as long as the same piece at 0.20 mm. On a P1P, that small castle piece shifts from roughly 6 hours to roughly 13 hours. Reserve 0.08 mm for pieces worth the investment.

0.20 mm is the workhorse setting and the one this article centres on. It is fast enough to batch-print a full terrain set in a reasonable week, and the layer lines are acceptable once the piece is primed and painted. From 40 centimetres away across a gaming table, 0.20 mm terrain looks like stone. The profile in the final section uses 0.20 mm.

0.28 mm is for fast scatter: barrels, crates, scatter rocks, low-detail objectives. It prints fast and it looks coarser, but for pieces that spend most of their time in the corner of a board, nobody cares.

The 0.4 mm nozzle is the right tool for all three of these heights. The 0.2 mm nozzle has not proven its worth for terrain at table distance. Print times roughly double for minimal quality gain where it counts. Use the 0.4 mm.

Wall count

Two walls is not enough for terrain that gets handled. The outer two walls are the entire structure of the piece from the outside in, and two of them is a shell that flexes when grabbed. Three walls is the minimum for anything that will be picked up repeatedly. It adds meaningful print time but also meaningful durability.

Four walls is worth it for high-stress pieces: tower bases, gate arches, castle walls that get stacked in a storage box. The extra wall adds another perimeter of mass at precisely the point where force concentrates during handling.

Thinner walls chip rather than flex. The wall-count penalty in print time is real but smaller than the infill penalty for the same structural benefit.

Infill: density and pattern

10% infill is too low for terrain. A tower printed at 10% gyroid sounds hollow and transmits the hollowness through the shell as flex. The 15% to 20% range is where terrain lives.

The profile in this article uses 18% gyroid. Gyroid is heavier than grid or cubic but stronger in all directions. For terrain, three-dimensional strength matters because pieces get grabbed from unexpected angles. Grid infill is faster but weaker at the joins. Cubic is a reasonable middle ground if print time is the priority.

Nobody will ever see the infill pattern. Pick for weight and strength, not aesthetics.

Print speed

The speeds that appear in Bambu marketing are achievable on simple convex shapes. Terrain is not a simple convex shape. Crenellations, archways, window openings, and overhanging stonework all punish aggressive outer-wall speeds by making the filament bridge imprecisely or by letting layer lines bow outward at corners.

Set the outer wall speed to 120 mm/s. That is slower than the defaults on some profiles but significantly improves layer-line consistency on detailed surfaces. Infill speed can stay at 250 mm/s; nobody sees the infill and the extra speed is lost in the total print time.

The practical result is that outer surfaces come out cleaner and the speed penalty on overall print time is smaller than expected, because infill makes up a significant share of total print time.

Support strategies

Tree supports (called “organic” in some versions of OrcaSlicer) win over normal grid supports for almost all terrain. They use less material, are easier to remove, and leave less scarring on the faces of the print. Normal grid supports are harder to detach and frequently tear the surface layer on textured stone faces.

The support contact distance controls how far the support sits from the model surface. The default is 0.20 mm and it is the correct starting point. On highly textured terrain like rough stone or cobbled ground, 0.25 mm gives slightly cleaner removal at the cost of a tiny gap in bridged overhangs. Start at 0.20 mm and only push to 0.25 mm if you are finding support removal leaves visible scarring.

Adhesion: brim versus raft

A brim is sufficient for most terrain on a smooth PEI bed. The terrain pieces that need more are the ones with a very small contact footprint relative to their height, such as tall thin pillars. For those, a wider brim (5 mm to 8 mm) is preferable to a raft.

A raft is for two situations: textured first layers that will not stick reliably to a smooth bed, and warpy filaments like PETG or PLA-CF. For standard PLA on a clean PEI plate, a 5 mm brim is all the adhesion help you need.

A skirt is not adhesion help. Do not confuse the skirt (which primes the nozzle) with the brim (which extends the contact area). The profile in this article uses a 5 mm brim.

Cooling

PLA terrain prints well with 100% fan speed from layer 2. The first layer needs lower cooling to stick, which is why layer 2 is the correct point to bring the fan to full. Full fan speed on PLA keeps overhangs clean, keeps arches from sagging, and tightens layer lines on vertical surfaces.

PETG runs at around 50% fan speed and rewards patience. It bridges acceptably but warps badly with too much cooling on the first few layers. Tune PETG settings cautiously and do not expect to print it as fast as PLA.

PLA-CF (carbon-fibre reinforced PLA) needs a hardened nozzle without exception. The carbon fibre will abrade a brass nozzle rapidly. Run fan speed around 80%, slow the outer walls slightly more than standard PLA (100 mm/s is a safer outer wall speed), and add a wall or two beyond the standard count to compensate for the slight brittleness the carbon fibre introduces.

For most terrain printing, PLA is the correct choice. It is cheap, reliable, widely available, forgiving on settings, and produces durable finished pieces once primed and painted.

Filament-specific notes

PLA is the default. It sticks reliably, prints fast, and is available in every colour. For terrain that will be primed and painted, the colour of the filament is irrelevant. Grey or white PLA makes it easier to see layer defects before priming.

PETG is more durable and slightly flexible, which sounds appealing for terrain but rarely delivers in practice. It warps more, requires a slower and more careful tune, and the extra durability is not meaningful for painted terrain used at a table. Use it only if you have a specific reason.

PLA-CF is interesting for terrain that will receive rough use. It is stiffer and more rigid than standard PLA, which makes it better for thin-walled structural pieces. The mandatory hardened nozzle is the only real barrier. It is worth trying once your standard PLA terrain settings are dialled in.

A starting profile for tabletop terrain

These are specific values, not ranges. Copy them into a new profile in Bambu Studio or OrcaSlicer and use it as your baseline. Adjust from here based on what your test pieces show.

• Layer height: 0.20 mm
• Walls: 3
• Infill density: 18%
• Infill pattern: gyroid
• Outer wall speed: 120 mm/s
• Infill speed: 250 mm/s
• Support type: tree (organic)
• Support contact distance: 0.20 mm
• Adhesion: brim, 5 mm
• Fan speed: 100% from layer 2
• Filament: PLA

Save this as a named profile (“terrain-workhorse” works well). When you need hero-quality prints, clone it, drop the layer height to 0.08 mm, and name the clone accordingly. When you need fast scatter, clone the workhorse and push the layer height to 0.28 mm.

The profile is deliberately conservative on speed. Once you have produced a few pieces and understand how your specific printer handles terrain geometry, experiment with pushing the outer wall speed up. The floor of acceptable quality will be higher than you expect once the other settings are in place.

Tuning from here

Print a small test piece first. A short ruined wall section with crenellations, an arch, and a corner is a better test than a benchy for terrain settings, because it puts overhang, bridge, and detailed surface all in one print.

Look at the piece under the light you use at your gaming table, not under a macro lens. Layer lines that look severe under a phone camera are frequently invisible at 40 centimetres. If they bother you under table light, drop the layer height to 0.15 mm and print again. If that is still not enough, go to 0.12 mm. Dropping all the way to 0.08 mm is usually not necessary.

The wall and infill settings in the profile above rarely need adjustment. Speed is where most tuning time goes, and most printers handle the 120 mm/s outer wall speed without trouble.

For the choice between FDM terrain and resin terrain, see resin or FDM for tabletop terrain. For a full look at the printer this profile was developed on, see the Bambu P1P review. If you are still choosing an FDM printer for terrain, the best 3D printer for terrain guide covers the current options.

The settings in this article are a starting point, not a final answer. Print a piece. Look at it under real light. Decide whether the layer lines bother you. Adjust once if they do. You will find the right profile faster than you expect.