Prusament Premium PLA Prusa Galaxy Black 1.75mm 1kg: problems, parts and running costs

Checked: 2026-10-23

Summary

Owners most often report nozzle clogs on Czech-made rolls produced March 13 to May 13, 2026, plus rough surfaces at high print speeds and clogs in small nozzles. At the Prusa US listing of $25.49 per kg, or $37.99 at Printed Solid, a 1 kg spool costs $25.49 to $37.99, with no subscription and no special nozzle required. It is a good buy near $23 or less delivered, or at $25.49 when the glitter finish and per-spool data matter; for cheap draft volume, budget PLA is the better buy.

Common problems and fixes

Clogs from an incorrect masterbatch on Czech-made spools (March 13 to May 13, 2026) — owners report nozzles clogging almost immediately; US-made spools were excluded; Prusa offers free replacement with the spool code. Warranty covers this specific batch only, not a general no-clog guarantee. [5][6]
Clogs in 0.2 and 0.25 mm nozzles — glitter raises clog risk in small nozzles; 0.4 mm brass is the published default; a 0.6 mm nozzle can be tried but does not guarantee a fix. [7][11][13][14]
Rough or matte surfaces at higher speeds — owners report rough surfaces unless outer-wall speed stays below ~30 mm/s; measured max volumetric speed is ~17-19 mm³/s against a manufacturer claim of 25 mm³/s. [7][9]
Ghosting highlighted by glitter — glitter can make vibration ripples more visible; a 2019 TEVO Flash test showed glitter highlighting ghosting. [8]
PLA heat weakness — parts soften around 55-60 °C and can fail near heat or in cars; no color-specific high-temperature data was found. [4]
MK4 stuck-filament sensor reports — one February 2025 owner reported Galaxy Black triggering the sensor while other PLA worked; other owners reported flawless results; no frequency was established. [12]
Gear grinding and PTFE tube problems during repeated clogs — a 2019 Prusa forum report described these symptoms; support suggested different extruder tension or temperature. [11]

Parts and consumables

Prusament PLA Prusa Galaxy Black 1.75 mm, 1 kg spool (SKU 17702) — $25.49 on the Prusa US listing and $37.99 at Printed Solid; consumed per print with no fixed replacement interval. [2][3]
Dry-storage bag or box with desiccant — optional; drying is usually not necessary for PLA, and no replacement interval or part number was listed. [1][4][17]
Bed cleaning products and optional adhesion aids — used per print surface and project; no Galaxy-Black-specific part number or quantity. [4]

Yearly running cost

At $25.49 per kg, 100 g equals $2.55 and 250 g equals $6.37; at $37.99 per kg, the same amounts equal $3.80 and $9.50. [2][3] A 3 kg year totals $76.47 at $25.49 or $113.97 at $37.99, and a 12 kg year totals $305.88 or $455.88, excluding shipping, waste and taxes. [2][3] Filament is the dominant cost; no enclosure or special nozzle is required and no subscription applies. [4] Electricity is not quantified because printer wattage, hours and local rates are unknown. [1][4] Failed-print reserve from the 2026 quality issue is also unknown because no incidence or average loss was published. [5][6] Spool yield depends on slicing, supports and misprints, so no generic model count or wastage percentage is given. [1][4]

When it is a good buy

Good buy at $23 or less delivered per sealed 1 kg spool from a reputable seller, provided production date, origin or batch traceability is available. [2][5]
At $25.49 direct, justifiable for the finish and per-spool data, especially on a tuned Prusament setup. [1][2]
From $24 to $29, reasonable if the buyer values the exact shade and QC trace and the order is ready to ship; otherwise compare alternative glitter PLA. [2]
From $35 to $38, the Printed Solid standalone listing is poor value against $25.49 on the Prusa US page and $24.99 Polymaker Panchroma Galaxy Black, which was sold out or backordered. [3][16]
Named alternatives: ELEGOO Galaxy PLA Galaxy Black at $18.99 for lower cost; Polymaker Panchroma Galaxy PLA Galaxy Black at $24.99 when that visual recipe matters; Prusament PETG Galaxy Black at $25.49 when the part needs more heat or toughness; Prusament PLA High Speed Galaxy Black at $24.32 when higher throughput matters. Each uses different settings and is a different formula. [15][16][18][17]