Use isopropyl alcohol (or isopropanol) or ethanol with an alcohol percentage of at least 70% (90% or higher is recommended) for polishing

Material: PLA

TPU may be the better choice

Technically

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Spectrum - GreenyHT - Traffic Black - 1.75mm - 1kg Ultimaker 3 / 3 Extended Ultimaker - Reservedel Use isopropyl alcohol (or isopropanol)* Brand: Spectrum * Material: PCTG * Colour: Traffic Black * RAL: 9017 * Diameter: 1. 75mm * Weight: 1 kg Spectrum PCTG is an excellent alternative to PET G, which is well known in the 3D printing world. The filament PCTG belongs to the same family of materials copolyesters and is characterized by the same simplicity of printing as PET G. PCTG combines the most desirable properties of PLA Tough and PET G. Advantage of PCTG: * Increased impact strength