Filament Spectrum PET-G 1.75 mm 1 kg — Wizard Indigo, premium 3D printer filament

Spectrum PET-G 1.75 mm filament in Wizard Indigo (black appearance) is a premium PETG material supplied on a 1 kg spool for FDM/FFF 3D printers that accept 1.75 mm filament. Designed for functional parts and prototypes, this PET-G filament offers a combination of good layer adhesion, reduced warping and improved toughness compared with standard PLA, making it suitable where mechanical strength and chemical resistance are required. The filament prints at a recommended extrusion temperature range of 190–220 °C and is presented in practical 1,000 g packaging for continuous printing runs.

Advantages

Spectrum PET-G delivers reliable layer bonding and moderate flexibility that reduces the risk of brittle failure in mechanical parts. Its low shrinkage properties help minimise warping during printing, while the material’s chemical resistance improves suitability for components exposed to humidity or mild chemicals. The 1.75 mm diameter provides consistent feeding on most consumer and prosumer FDM printers, and the premium manufacturing process ensures uniform diameter and roundness for stable extrusion and predictable part dimensions.

Suitable for

• Functional prototypes and test fittings
• Durable household components and fixtures
• Mechanical parts and brackets requiring impact resistance
• Enclosures and parts exposed to humidity or mild chemicals
• Parts that need good dimensional stability and low warping

Key specifications

• Material: PET-G (polyethylene terephthalate glycol-modified)
• Nominal diameter: 1.75 mm
• Recommended print temperature: 190–220 °C
• Net weight: 1,000 g (spool)
• Colour: Wizard Indigo (black visual appearance)
• Compatibility: FDM/FFF 3D printers accepting 1.75 mm filament

How to use

Load the filament onto a compatible 1.75 mm filament spool holder and feed it into the printer’s extruder according to your printer manufacturer’s instructions. Set the hotend temperature within the recommended range of 190–220 °C and adjust print speed, retraction and cooling to suit your model and printer. A heated bed can improve adhesion; typical bed temperatures for PET-G are around 60–80 °C. Ensure the first layer is well calibrated to achieve adhesion without excessive squish. Dry the filament if it has absorbed moisture before printing for best surface finish and mechanical properties.

Usage recommendations

For reliable prints, use a moderately fast print speed with reduced retraction settings to avoid stringing, maintain bed temperature around 60–80 °C, and consider a thin glue stick or PEI sheet for bed adhesion. Store the spool in a dry place or sealed container with desiccant to preserve filament quality.