3D Printers

German RepRap launches L320 liquid silicone 3D printer

3D printer manufacturer German RepRap has launched a new Liquid Additive Manufacturing (LAM) system. Named the L320, the system has a larger build volume than the L280 German RepRap’s first LAM printer, and can be used to process injection molding grade silicone.

According to the company, it is “an extremely stable” system, “adapted to the high demands of industrial continuous operation.”

The German RepRap L320. Photo via German RepRap
The German RepRap L320. Photo via German RepRap

Liquid Additive Manufacturing

Though still a type of material extrusion technology, LAM differs from deposition methods like FFF and FDM as the feedstock is not melted in the process. Instead, LAM material, as the name suggests, is liquid when deposited. It gets vulcanized into a solid object through exposure to a heat lamp that passes over the bed between layers. The method was invented by Outstanding Contribution to 3D Printing Award-winning Dr. Adrian Bowyer, and has since been commercially developed by German RepRap in collaboration with chemical company Dow that manufactures material for the process.

The advantages of LAM, as explained by Benedikt Höß, Head of R&D and Support at German RepRap, is that “you have the same strength on the Z axis as you have for the X and Y axis, or as you have in the injection molding process.”

In addition, LAM is capable of both low-volume/single object prototyping and serial production, within a build of 250 x 320 x 150 mm.

German ReRap also manufacturers FFF 3D printers, including the x400 and x500.

Printhead on the L320 system. Photo via German RepRap
Printhead on the L320 system. Photo via German RepRap

German RepRap L320 Technical Specifications

The L320 is capable of a print speed within the range of  10 and 150 mm/s. Positional accuracy of silicone deposition is +/- 0.2 mm/s, and it can produce a layer height of between 0.22 and 0.9 mm. SILASTIC™ 3D 3335 Liquid Silicone Rubber is the machine’s material of choice, and the recommended slicer is Simplify3D. There are also three nozzle options for the L320: 0.23, 0.4 and 0.8 mm.

In addition to the system, German RepRap is offering an optional maintenance contract, on-site service and material packages with purchase of the L320.

Price for the system is available on request.

Build platform (X x Y x Z)
250 x 320 x 150 mm
Print speed
10 – 150 mm/s
Travel speed
10 – 300 mm/s
Position accuracy +/- 0.2 mm/s
Layer height (min.) 0.22 – 0.9 mm
Material
SILASTIC™ 3D 3335 Liquid Silicone Rubber (LSR)
Nozzle options
0.23 | 0.4 | 0.8 mm
Extruder
Lift and sunk system, volumetric extrusion
Options
Maintenance contract, material pails
File transfer
with USB-Stick, Stand-alone printing with Touch Display, ethernet
Software
Simplify3D Software
Operating voltage 230 VAC
Display
15.6 inch Touch Display
Outer dimensions
Printer without cartridge system and display: 800 x 960 x 1957 mm (fits through 1-wing doors, standard dimensions)
Weight
approx. 350 kg (without cartridge system)
Technology
LAM (Liquid Additive Manufacturing)
Hardware
Industrial rollers and stand for easy handling

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Featured image shows LAM 3D printing. Photo via German RepRap