Lithophane Print Settings That Actually Work

A lithophane is unusually picky about print settings, and for a good reason: the thickness of the panel is the image. Every other print forgives a lot, because you only ever look at the outside. A lithophane gets held up to a light, so the slicer's choices about layers, infill, and orientation are not hidden inside the part. They are the picture. Get the handful of settings below right and the result can be startling. Get them wrong and you get a blurry, banded smear. Let's spread the good ones on first.

Sensible defaults (start here)

These are the settings the ButterySpace download is built around, and they match the community consensus for FDM lithophanes. Plug them in, print, then fine-tune for your filament with a calibration strip.

Setting	Recommended	Why it matters
Orientation	Vertical (standing up)	Puts image detail in the high-resolution X/Y plane. Ships pre-rotated.
Layer height	0.12 mm or lower (0.08 mm for best)	More layers through the thickness means more tonal steps and smoother gradients.
Infill	100%	Anything less leaves gaps that ghost over the backlit image.
Walls / perimeters	3 or more	Helps the solid fill read clean and the panel stay stiff while it prints tall.
Filament	White or natural PLA	Transmits light most evenly. Color tints the image; opaque blocks it.
Print speed	30 to 45 mm/s	Slower and steadier keeps tones consistent and avoids ringing.
Cooling fan	100% from layer 2	Crisp layers on a tall thin wall; sharper detail.
Adhesion	Brim (a tall panel can wobble)	Holds the narrow footprint down so the print does not tip or shift.
Supports	None	A standing flat panel has no overhangs to support.

Orientation: stand it up

This is the single most important setting, so it goes first. Your printer is precise to a hair in the X and Y directions, where the nozzle moves freely, and much coarser in Z, where it can only step up one layer height at a time. A lithophane needs its fine tonal detail in the precise plane, which means the panel has to stand up on its edge so the picture faces sideways.

Print it flat and the image detail gets squashed into the low-resolution Z stepping, and the result comes out blurred and soft no matter how good your photo was. Standing it up also makes the layer lines run horizontally across the picture, where they read as a faint, even texture rather than visible stair-steps. The trade is print time, since a tall part is slower, but it is the difference between a keepsake and a fuzzy tile. Again, the download arrives in this pose already, so this one is handled for you.

Layer height: this is your tonal resolution

A lithophane reproduces brightness as thickness, and the printer can only build that thickness in layer-height-sized steps. So your layer height directly sets how many shades the panel can show. At a roughly 3 mm range and 0.2 mm layers, you get about fifteen discrete thickness steps, which is to say fifteen tones. Halve the layer height to 0.1 mm and you double that to about thirty. The gradients in skin, sky, and fur get noticeably smoother with every step you add.

• 0.12 mm is the sweet spot on a standard 0.4 mm nozzle: clearly better than 0.2 mm without crawling.
• 0.08 mm is the quality pick if you have the patience. Best on a smaller nozzle, but doable on 0.4 mm.
• 0.2 mm works for bold, high-contrast images, but the smooth areas will band.

Infill: 100%, no exceptions

Set infill to 100%. A normal infill pattern, like gyroid or grid, leaves a lattice of air pockets inside the part. You never see those on an ordinary print, but a lithophane is backlit, so light pours through the thin air gaps and gets blocked by the solid struts. The result is your photo with a faint honeycomb or grid laid over it like a screen door. Solid fill is the only way to get an even glow. Because the panel is thin, 100% infill barely costs you any extra time or filament, so there is no reason to skimp.

A side note you may run into: some makers get the same solid result by setting infill to 0% and bumping wall loops up into the dozens, so the panel is built entirely from perimeters. That works, but plain 100% infill is simpler and just as clean, so start there.

Walls, top and bottom layers

With 100% infill the panel is essentially solid already, so walls and top layers are less about strength and more about a clean, uniform surface. Three or more perimeters help the panel stay rigid while it stands up tall during printing, which keeps the image faces flat and even. There is no real overhanging top surface on a standing panel, so you do not need to fuss over top-layer counts the way you would on a flat part. The default solid settings are fine once infill is at 100%.

Filament: white means honest light

Filament choice is the other half of the picture, literally. White or natural PLA lets light through most evenly and cleanly, so your photo reads in true light and shadow. Reach for those first.

• Color tints the whole image. A red filament makes a red-toned lithophane. Sometimes that is a deliberate effect, but it is rarely what you want for a portrait.
• Opaque, dark, or heavily filled filaments block the light. Glow, glitter, silk, and dark colors are poor choices because not enough light gets through.
• Every filament transmits light a little differently, so the ideal thickness range is not the same across brands. That is what the calibration strip is for.

The ButterySpace tool includes a 19-step thickness calibration strip mode. Print it once for any new filament, hold it up to a light, and read off the thinnest and thickest steps that still look right for that filament. Then dial those numbers into your lithophane so the min and max thickness match what your filament can actually do. The full walkthrough lives in curved vs flat lithophanes and thickness calibration, so we will not repeat it here. The defaults in the tool are calibrated from real prints: a 0.2 mm pixel pitch, about 3.2 mm of max thickness, and a 5 mm frame, which is a good starting point for white PLA before you calibrate.

Speed and cooling

A lithophane is a tall, thin wall, which is exactly the geometry that shows off any inconsistency in your printer's motion. Slow it down: 30 to 45 mm/s keeps extrusion even and keeps ringing and ghosting out of the tones. Faster than that and small wobbles in the machine start to print into the image as faint vertical bands.

Run the part cooling fan at 100% from the second layer onward. Each layer is a narrow strip that needs to set before the nozzle comes back around, and good cooling is what keeps the layers crisp and the fine detail sharp on a part this thin.

Adhesion: a brim keeps the tower honest

Standing up, a lithophane has a small footprint and a tall body, which is a tippy combination. A brim widens that footprint and locks the base to the bed so the panel does not wobble, lean, or shift partway up. Eighteen to twenty brim loops is plenty, and it peels off cleanly afterward. A clean, level bed does the rest. Skip rafts, since they are a pain to remove off the bottom of a lithophane and leave a rough underside.

Per-slicer notes

Bambu Studio and OrcaSlicer

Both share the same engine and both make this easy. Import the file, set layer height to 0.12 mm or finer, set infill to 100%, set walls to 3 or more, drop print speed into the 30 to 45 mm/s range, turn the part cooling fan to 100%, and add a brim. Since the ButterySpace model ships standing up, you do not need to rotate it. If you grabbed the 3MF, the frame already lives on its own filament slot, so on an AMS or multicolor setup you get a two-color print with zero painting.

PrusaSlicer

Same recipe. Set the layer height in the print settings, infill to 100%, perimeters to 3 or more, and lower the speeds. Enable a brim under skirt and brim. PrusaSlicer reads the 3MF's separate objects, so the panel and frame come in as distinct parts you can assign materials to. Confirm the part is standing vertical on the plate, which it should be out of the box.

Cura

Cura does not read a 3MF's color and object assignments the way the others do, so if you want the painless two-color frame, use the 3MF in a Bambu or Prusa workflow. For a single-color print, the matched STL is the cleaner choice in Cura. Set layer height to 0.12 mm, infill to 100%, walls to 3 or more, lower the speeds, fan to 100%, and add a brim. The STL vs 3MF guide covers which file to feed which slicer in more detail.

Troubleshooting

Horizontal banding across the smooth areas

If the gradients look stepped, your layer height is too coarse for the tonal range. Drop to 0.12 mm or 0.08 mm to give the panel more thickness steps to work with. A small amount of fine texture from the layer lines is normal and reads as character up close.

Ghosting or ringing (echoes near edges)

Faint repeated echoes trailing high-contrast edges are mechanical. Slow the print down to 30 mm/s, and check that your printer's belts are tensioned and its frame is sitting on something solid. A tall thin wall amplifies any vibration straight into the image.

A grid or honeycomb over the picture

That is infill showing through. Set infill to 100%. There is no other fix; a backlit lithophane has to be solid.

The whole image looks blurry or soft

Almost always the part printed flat instead of standing up, so the detail landed in the coarse Z direction. Confirm the panel is vertical on the plate. With the ButterySpace download it already is, so double-check you did not rotate it by accident. If it is vertical and still soft, go finer on layer height.

The image is too dark, too light, or muddy

The thickness range does not match your filament. A too-thick max blocks the bright areas; a too-thin min lets the dark areas glow. Print the 19-step calibration strip, read the usable range backlit, and set your min and max thickness to match. The calibration guide walks through it step by step.

The panel warps, tips, or shifts mid-print

A standing lithophane is a balancing act. Add or widen the brim so the base grips the bed, clean and level the bed, and keep the print slow and well-cooled so each layer sets before the next lands. If a large panel keeps tipping, it may be tall enough that a slight curve or a flat-pose print suits it better; curved vs flat covers when to switch.