Texture roller

Wrap a model’s relief around a barrel and roll the pattern into clay, dough or fondant.

A texture roller is the one clay tool where owning the shape is the whole job. You already have a model; this wraps its surface around a barrel so you can print the pattern into a slab in one pass.

It reads the model’s relief, not its outline. Seen from straight above, every point of the model has a height, and that height field is the pattern — so a leaf brings its veins, a coin brings its lettering, and a tile brings whatever is carved into it. This is the difference between this generator and the cookie cutter, which takes the same model and keeps only its shadow. If what you want pressed into the clay is an outline, the cutter is the better tool; if it is a surface, this one is.

Raised and recessed are opposite tools, not a sign flip. Raised stands the motif out of the barrel, so it presses down INTO the clay and leaves the pattern sunk. Recessed cuts the motif into the barrel, so the clay rises into it and the pattern stands proud. Recessed also eats into the tube wall, which is why the Tube wall row drops when you switch to it and why the axle hole may be narrowed to keep the wall printable.

Repeats decide how big the motif ends up, and the panel does the arithmetic. Six repeats around a 40 mm barrel gives each motif about 21 mm of arc — the One motif row is that figure, and it is the one that decides whether fine detail survives at all. Detail finer than about half a millimetre will not print and will not press.

Watch the Motif shape row. The motif is stretched to fill its tile, and the tile’s proportions come from the barrel and the repeat counts — which have nothing to do with your model’s. A square motif on a tall thin tile comes out drawn wrong rather than tiled wrong, and the row appears only when that is happening. Change the repeats or the barrel length to square it back up.

Brick bond hides the grid. Straight rows read as a grid, and a grid reads as a print. Offsetting alternate rows by half a motif is what makes a repeated stamp look like a texture. It needs more than one row along to do anything.

The pattern runs the full length, and it wraps without a seam. The last column of the barrel joins the first exactly, so rolling continuously repeats the motif with no join line — provided the motif itself meets its own edges. A model with material running off one side of its footprint and not the other will show where the tile restarts, and that is the model, not the roller.

Relief depth is a clay decision before it is a printing one. Deep gives a bold impression and needs support; shallow releases cleanly. Around 1.5 mm suits most clay and fondant. Too deep and the clay tears rather than lifting off, whatever the printer manages.

It will want some support, and the Overhang row says how much. A roller prints standing on its end, and in that pose every relief feature is a protrusion from a vertical wall. There is no orientation that avoids this — laid on its side the whole barrel is an unsupported arch instead. The figure in the panel is measured off your own pattern, and a shallower relief is the usual way to bring it down.

The axle hole is for a dowel. 8 mm clears a standard hardwood dowel or a length of M6 threaded rod with room to turn. Set it to zero for a solid roller you hold by the ends, which is fine on a short one and tiring on a long one.

The print check will often mention thin walls, and on a textured surface that is usually the crest. Where two neighbouring motifs meet, the material between them narrows to an edge — which is what a texture is, not a flaw, and the printer rounds it off. The number to watch for the part itself is the Tube wall row, which measures the material between the axle hole and the surface it rolls on. Fewer or shallower repeats give a blunter crest if you would rather not see the note at all.

Molding the whole model rather than its surface? The casting mold generator wraps all of it.

1. Select the body whose surface you want to roll — the pattern is measured off it, so this comes first.
2. Open the Generate panel from the left sidebar and choose Texture roller (under Molds & casting).
3. The roller drops in as one printable body. The parameters open in the Properties panel.
4. Pick Raised to press the motif into the clay, or Recessed to leave it standing proud.
5. Set Repeats around and Repeats along, and read the One motif row — that is the size your pattern actually ends up.
6. If the Motif shape row appears, the motif is being stretched: change the repeats or the barrel length to square it up.
7. Run the print check and export. It prints standing on its end, and the Overhang row says how much support the relief will want.