Craft stamps and texture tools: designing printable patterns

Raised or recessed: what the ink actually shows

The Prusa blog presents a stamp as a stable block with a raised design. It says a few millimeters of relief are enough for clean, consistent imprints in its examples. This is not a universal dimension for every texture tool; adapt the design to the pattern, paper and material you intend to use. If you use the object to emboss paper or press clay, treat that as a separate project to check: the article mainly describes ink stamps on models and paper.

The step most people forget is mirroring. The Prusa blog is blunt about it: mirror the stamp before slicing, especially any text, or the letters will print backwards on paper. In PrusaSlicer, the Prusa Knowledge Base describes three text object types: Added for a raised part, Subtracted for a recessed one, and Modifier for a local setting change. For an ink stamp, the raised version carries the pattern. Subtracted text can give uninked letters on an inked background. This positive/negative choice is separate from mirroring, which controls reading direction.

Soft or rigid: why the material decides the outcome

In its article about ink stamps, Prusa describes a slightly porous surface and a soft material as useful characteristics. The author recommends flexible material rather than PLA for this use. At the end, the article reports blank spots with PLA and other hard materials in its comparison, and says an even imprint from a PLA stamp was pretty much impossible. Keep this as the result reported for the article’s stamps, not a test of every rigid material or craft use.

For filaments, the article names Fiberlogy Fiberflex 40D as the best among the products in the Prusa shop that it tried. It also describes ColorFabb VarioShore TPU: at a higher temperature it foams and becomes softer, hides layers better, but loses detail and produces blurry edges. These are supplier examples reported by the article. For VarioShore, do not infer a temperature setting or identical behavior for another grade from this description. The author also advises drying the filament to limit stringing.

FDM or resin: two routes to a stamp

According to the Prusa blog, both technologies work, with different compromises. In the MSLA example on Original Prusa SL1S SPEED, the author describes detailed stamps with smooth faces needing little or no surface finishing, perhaps fine sanding. This finishing concerns surface appearance and does not replace washing and post-curing steps specified by the resin instructions. The downsides are the cost of the technology and the need for flexible resin, which may expire as leftovers if you have no other flexible project. Prusa cites Prusament resin Flex for this use.

In Prusa’s comparison, FFF is described as cheaper and less messy, with longer-lasting filaments, while its prints may be less detailed and need post-processing. The blog says FFF suits larger, less-detailed stamps. It also reports that large-area MSLA stamps can leave blank spots related to Shore hardness. These are the article’s observations and examples; do not turn them into a universal ranking of the two processes.

Build surface and orientation on an FDM printer

The Prusa blog is specific here: on FDM, print the model with the image facing down to make the contact face as smooth and flat as possible. The build surface becomes the stamp surface. Prusa recommends a smooth sheet or glass; its satin sheet works but leaves more blank spots and a weathered look; the textured sheet is declared unsuitable. Every bump, dent, or glue streak shows in the imprint, including the first layer line pattern.

For its FFF examples, the blog recommends a smooth sheet or glass; the satin sheet works but can leave more blank spots, and the author says the textured sheet is unsuitable for making stamps. It calls for a thin, even glue-stick layer to reduce excessive adhesion of flexible filament. For infill, it suggests 60% depending on model size and shape; do not transfer that figure to every stamp. The face-up test with ironing did not give the desired result in the article. For MSLA, the blog shows the image facing away from the platform without supports or a pad on its SL1S SPEED example.

Keep pattern and font provenance

The Prusa blog says a pattern can be drawn in Tinkercad, Fusion 360, Blender, Inkscape or another vector editor, then embossed in PrusaSlicer by importing an SVG. For a bitmap, it mentions converters or Inkscape as preparation steps. The cited Text tool page is tagged PrusaSlicer 2.9 (Legacy); it describes adding text, Z rotation, elevation and the Added, Subtracted and Modifier types. Check your installed version before following UI steps.

To make the work traceable, record the pattern name, creator if listed, source URL or file, access date and project version. For text, also note the selected font and exact wording. The PrusaSlicer page describes TrueType font import and presets; it does not assess font permissions. If reproduction or sale depends on external terms, review the exact terms for the relevant source rather than relying on the file being present on your computer.

Geometry, supports, and the handle

According to the Prusa blog, flexible filaments are very bad at bridges and overhangs, and their supports are extremely hard, if not impossible, to remove. Two workarounds are described. The first is to pre-print supports in another filament such as PLA, then insert them mid-print using a pause added in PrusaSlicer. The second is to design the raised parts with chamfers so there are no 90-degree overhangs, for which the article refers to a modeling program. That describes the author’s workflow, not the features of every later PrusaSlicer release.

In the article’s VarioShore example, the author links first-layer under-extrusion to a mismatch between a profile intended for a slightly foamy state and a print temperature at which the filament does not foam. This is the explanation for that example, not a procedure or temperature value to apply to another material. Before repeating a project, check the filament grade and profile actually in use. For a handle, the blog also shows a stamp attached to a handle or an object combining stamp and ink pad, as in its geocaching example.

Sources and limits

• How to 3D print stamps - Original Prusa 3D Printers
• Text tool — Prusa Knowledge Base, PrusaSlicer 2.9 Legacy

We organize manufacturer and community documentation; we have not measured these products ourselves. The manual for your exact model takes precedence over general guidance.