3D Printing Filament ROSA3D PET-G 1.75 mm 1 kg spool — Gray

ROSA3D PET-G 1.75 mm filament on a 1 kg refill spool in gray is a thermoplastic for FDM/FFF 3D printers. PET-G combines mechanical strength, chemical resistance and good layer adhesion, providing reliable dimensional stability for prototypes and functional parts. The 1.75 mm diameter is compatible with standard extrusion systems, and the 1 kg spool offers enough material for medium-sized prints and iterative testing.

Advantages

PET-G filament offers a balance between the toughness of ABS and the ease of printing of PLA, with improved impact resistance and reduced warping compared to some engineering plastics. The material exhibits good layer bonding, moderate flexibility and resistance to moisture and many chemicals, which makes printed parts suitable for practical use. The consistent diameter control and roundness reduce extrusion issues and support stable print quality across long prints.

Suitable for

• Functional prototypes and mechanical parts requiring impact resistance
• Consumer products and housings with moderate chemical exposure
• Fixtures, jigs and tooling for workshop use
• End-use parts where reduced warping and good adhesion are needed

Key specifications

• Material: PET-G (glycol-modified polyethylene terephthalate)
• Nominal diameter: 1.75 mm suitable for standard extruders
• Spool weight: 1 kg net filament per spool
• Color: gray
• Physical properties: good layer adhesion, moderate flexibility, improved impact resistance

How to use

Load the 1.75 mm PET-G filament into a compatible FDM/FFF printer following the manufacturer's filament loading procedure. Typical print temperatures for PET-G are higher than PLA; start around 230–250 °C and adjust based on nozzle size and printer. Use a heated bed set between 70–90 °C to reduce warp; a PEI sheet, glass with adhesive or a suitable build surface improves first layer adhesion. Print at moderate speeds and enable retraction settings tuned to PET-G to reduce stringing. Store unused filament in a dry container with desiccant to preserve print quality.

Usage recommendations

For best results, calibrate extrusion multiplier and retraction before critical prints, use a heated bed and optimize cooling to balance surface quality and layer adhesion. When printing functional parts, consider annealing or design features such as fillets and increased infill to enhance strength.