Ersetzen gedruckte Teile Metall in der Maschine?

Selten eins zu eins, oft aber funktional. Abdeckungen, Führungen, Gehäuse, Griffe und Anschläge laufen im Druck genauso gut wie in Aluminium, bei einem Bruchteil der Lieferzeit. Hochbelastete Antriebsteile wie Zahnräder im Dauerlauf sind Grenzfälle, die wir ehrlich bewerten.

Wie maßhaltig sind die Bauteile?

In der Regel ±0,2 bis ±0,3 mm über 100 mm, je nach Werkstoff und Ausrichtung. Passflächen übernehmen wir mit Sicherungsmaß und messsen Musterbauteile nach. Für engere Toleranzen planen wir Nachbearbeitung ein.

Halten die Werkstoffe Kühlschmierstoff und Reiniger aus?

PA12 und PA12-CF sind gegen viele Medien resistent, PC verträgt Temperaturen, ist aber empfindlich gegenüber manchen Lösungsmitteln. Nennen Sie uns das Medium und die Konzentration, wir ordnen den Werkstoff zu.

Bekommen wir Ersatzteile auch in zwei Jahren nochmal?

Ja. Wir archivieren Druckdaten, Parameter und Materialangaben projektbezogen. Eine Nachbestellung läuft mit denselben Einstellungen, sodass das Teil dem Ersten entspricht.

3D printing for machine building

Covers, guides, housings and spare parts for machines and plants, without tooling cost and without long lead times. Made in Germany, documented for reorders.

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Single parts in 24 to 72 hours, series in 1 to 2 weeks

Typical machine parts from the printer

Machine building is rarely about showpieces. It is about parts that are missing, needed fast, or no longer stocked by the supplier.

Covers and guards

Cabinet covers, sensor hoods and guards, contoured to the machine instead of bent from offcut sheet.

Guides and sliders

Product guides, cams and wear strips in PA12 or TPU that run quietly and protect conveyed parts.

Housings and controls

Electronics housings, handles and control elements in small series, with threaded inserts and marking.

Spares without drawings

Broken plastic parts that are no longer sold get reverse-engineered from the old part and printed to size.

Suitable materials

Around machines, wear, media and temperature decide. PA12-CF for stiffness, PC for heat, TPU for buffers and sealing elements.

Read the materials guide

Details for a sound design

01Function of the part: does it cover, guide, hold or seal? Material and wall thickness follow from that.
02Environment: temperature, coolant, cleaning agents and UV drive the material choice.
03Fasteners and wear points, so we plan inserts or reinforced zones.
04STEP data or the old part. We reconstruct missing geometry from the old part.
05Required tolerances on mating faces, so we include stock and post processing.

Full DFM checklist

Where 3D printing pays off in machine building

In machine building additive manufacturing rarely pays for a standard part, but it pays for anything needed once or in small numbers. Guides, covers, sensor mounts, gripper jaws and stop blocks are typical candidates because a drawing, a tool or a CNC setup costs more time than the part itself.

The practical advantage is changeability. If a fixture needs adjusting after first commissioning, you change the CAD file and we print the new version. This is why design departments often use printing in the middle of trials rather than only at the end.

The limits appear with permanently high surface pressure, hot oil or real clamping forces. In those cases we say so and propose a hybrid: a printed body with steel or aluminium inserts at the loaded points.

Manufacturing data at a glance

Location: Schleswig, Germany
Part size: up to approx. 250 x 250 x 250 mm, larger parts split and joined
Quantities: 1 to several thousand, no minimum order quantity
Tolerances: approx. ±0.2 mm for PLA, PETG and carbon grades, ±0.3 mm for ABS, ASA and PC
Layer height: 0.10 to 0.30 mm
Materials: 20 engineering filaments from PLA to PA12-CF and PC FR
File formats: STEP, STL, 3MF, OBJ, IGES up to 200 MB
Lead time: 2 to 4 working days for samples, 4 to 15 working days for series

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Machine building FAQ

Do printed parts replace metal in a machine?: Rarely one to one, but often functionally. Covers, guides, housings, handles and stops perform in print as well as in aluminium, at a fraction of the lead time. Heavily loaded drivetrain parts like continuously running gears are borderline cases we assess honestly.
How accurate are the parts?: Typically ±0.2 to ±0.3 mm over 100 mm depending on material and orientation. We add stock to mating faces and measure first articles. Tighter tolerances get planned post processing.
Do the materials tolerate coolant and cleaners?: PA12 and PA12-CF resist many media, PC handles temperature but is sensitive to some solvents. Tell us the medium and concentration and we match the material.
Can we reorder spare parts two years later?: Yes. We archive print data, parameters and material specs per project. A reorder runs on the same settings, so the part matches the first one.