3D Printing and Memorial Objects

Since around 2010, 3D printing has fundamentally widened what personalised memorial jewellery can do. What was previously possible only through laborious handwork - the exact reproduction of a fingerprint, a handprint or a face - can today be produced in standardised digital processes with high precision and at a defensible cost. 3D printing has thereby become one of the most important technological foundations of modern memorial jewellery, alongside laser engraving (see Laser Engraving) and CAD-based jewellery design.

Technical principle

3D printing works additively - material is added layer by layer instead of being cut subtractively from a block. Several processes are relevant to jewellery:

Stereolithography (SLA). A UV laser cures liquid photopolymer layer by layer; resolution typically 25–100 µm. Used above all for wax casting patterns.

Digital light processing (DLP). Similar to SLA, but instead of a laser the whole layer image is projected at once by a beamer; faster than SLA, but dependent on screen resolution.

Direct metal laser sintering (DMLS) / selective laser melting (SLM). A high-power laser sinters or melts fine metal powder layer by layer into a solid part; allows direct printing in gold, silver, platinum, stainless steel and titanium. Industrial printers with purchase costs above €100,000.

Binder jetting. Binder is sprayed onto sand or metal powder; the part is then sintered. Of interest for complex jewellery geometries.

Fused deposition modelling (FDM). A filament-based process (hobby and industrial printers); for memorial objects in PLA or ABS, less so for classical jewellery.

In jewellery practice the dominant approach combines SLA printing of the wax pattern with the classical lost-wax process for casting in precious metal. Direct metal printing (DMLS) is used above all for very complex geometries (hollow internal structures, for instance) that would be difficult or impossible to cast.

Capture methods for memorial sources

Before anything can be printed, the structure to be reproduced must exist as a digital 3D model. Several capture methods are relevant in a memorial context:

Photogrammetry. From several photographs of the same person or object (typically 30–100 images from different angles), specialist software (Agisoft Metashape, RealityCapture, Meshroom) computes a 3D model. Particularly suited to faces, hands and larger objects (a favourite sculpture belonging to the person who has died, for example). Can also be applied retrospectively, where only photographs survive.

3D scanning. An active 3D scanner (structured light, laser triangulation) digitises a real surface directly. In a memorial context this is used for hands, faces, favourite objects or parts of the deceased person's body (at an open lying-in-repose). Mobile scanners such as the Structure Sensor or the Artec Eva have been available in bereavement studios since around 2015.

Tablet-based fingerprint capture. Specialist tablets with capacitive sensors (see Fingerprint Jewellery) record the fingerprint digitally and deliver a vector representation directly, which can be imported into 3D CAD software. The method used by abdruck-digital.de.

Vectorisation of a 2D image. Classical 2D sources too - an ink print, a handwriting sample, a drawing by the person who has died - can be turned into 3D reliefs by image vectorisation.

CAD modelling from data. 3D models can also be built from medical data (an old dental impression, an ear impression from a hearing-aid fitting, an orthopaedic scan) - a rather rare, but technically possible memorial source.

Applications in memorial jewellery

Several typical applications are established in modern memorial jewellery:

Fingerprint jewellery (see Fingerprint Jewellery). The most frequent 3D printing application: the fingerprint of the person who has died is worked as a relief into the surface of a pendant, ring or bracelet link. The relief height (typically 0.1–0.3 mm) makes the print something one can feel.

Handprint jewellery. A complete handprint is integrated into the body of the piece, often as a pendant roughly in the shape of the original hand (at a much reduced scale, typically 2–4 cm in length).

Footprint jewellery. Particularly important for children lost before or around birth (see Memorial Jewellery for Stillbirth and Infant Loss): a baby's footprint (typically at 1:1 scale, being already very small) is integrated into a pendant or brooch as a relief plate.

Cameo pendants with a facial relief. From a 3D scan or a photogrammetric reconstruction, a facial cameo is created - a modern version of the historical cameo tradition. Scale typically 1:8 to 1:12 of the original face.

Miniature full sculpture. A 3D-printed miniature sculpture of the person who has died (typically 5–15 cm high) as a keepsake for the living room. Not classical jewellery, but a growing memorial segment.

Settings for memorial diamonds. A memorial diamond (see Memorial Diamond) is integrated into a personalised printed setting - the setting can carry initials, the date of death, symbols or a family crest.

Personalised ash capsules. The ash capsule of an ash pendant (see Ash Pendant) is printed individually - with the deceased person's fingerprint as a relief on the closure, for instance, or with a personalised outer form.

Strengths and limits

3D printing has several clear strengths in memorial jewellery:

Precision. Structures that could barely be reproduced by hand (the microscopic ridges of a fingerprint, the exact proportions of a face) are rendered to sub-millimetre accuracy.

Reproducibility. Identical pieces for several family members can be made from the same digital source - important for sibling sets or parent-child sets.

Depth of personalisation. Every detail of the piece (form, size, relief height, patina, degree of matting, ornament) can be adjusted freely in the digital model.

Preservation of the source. The digital source survives production and can later be reused for further pieces (a replacement if one is lost, new pieces for grandchildren born later) - an important advantage over purely handcrafted methods.

Against these stand several limits:

The craft aura. A purely 3D-printed piece does not have the same craft aura as a traditionally designed goldsmith's work. Most serious providers therefore combine 3D printing (for the personalised elements) with traditional goldsmithing (patination, polishing, final assembly).

Material limits. Not every jewellery material can be 3D printed. Classical mourning jewellery materials in particular - Whitby jet (see Whitby Jet), jet (see Jet (Gagate)) or vulcanite (see Vulcanite (Ebonite)) - cannot be processed this way.

Capital costs. High-quality jewellery 3D printers (industrial SLA/DMLS) cost €30,000–300,000 - worth buying only for workshops with a corresponding volume of commissions.

Questions of acceptance. Some mourners find 3D printing "too technical" for the emotional significance of a keepsake. Open communication about the production process (the digital share and the handcrafted share) helps.

Looking ahead

Several developments will shape 3D printing in memorial jewellery further:

AI-assisted photogrammetry. Better algorithms allow more precise facial reconstruction from less photographic material - in future a high-quality 3D model might be derived even from historical black-and-white photographs of a person who has died.

Direct gemstone printing. The first experimental processes print synthetic gemstones directly - a combination with memorial diamonds (see Memorial Diamond) is conceivable.

Integrating biological material. Research projects are working on 3D printing with DNA-bearing materials, proportions of hair or ashes as a material component - the piece itself would then consist in large part of the person who has died.

Home 3D printing. While professional jewellery 3D printers remain workshop equipment, home printers (PLA, resin) increasingly allow simple memorial objects (miniatures, fingerprint reliefs on wall hangings) to be made at home.

Within the history of classical mourning jewellery, 3D printing marks a technological turn of a magnitude comparable to industrial jewellery production in the nineteenth century (see The Victorian Era (1837–1901)) or the introduction of laser engraving (see Laser Engraving) in the late 1980s - it fundamentally extends what personalisation can do, and makes highly personalised memorial jewellery accessible to a broad public.