Troubleshooting
Does filament diameter tolerance matter, and what about 1.75 mm versus 2.85 mm?
By SSS
Published . Updated .
- Nozzle190–230 °C(374–446 °F)
- Bed50–70 °C(122–158 °F)
- Speed—
- Dry50–55 °C · 8 h(122–131 °F)
- Density1.26 g/cm³
Drying. Source: SUNLU TDS · Last checked 18 October 2026
Source: SUNLU Official Store | PLA Filament 1KG Spool for FDM 3D Printers | Bulk Mix & Match – SUNLU · Last checked 20 October 2026
Ranked filaments
| Rank | Filament | Material | Nozzle | Bed | Datasheet | Buy |
|---|---|---|---|---|---|---|
| 1 | SUNLU · PLA | PLA | 190–230 °C374–446 °F | 50–70 °C122–158 °F | — | |
SUNLU PLA from the Open Filament Database. Nozzle 190–230 °C (374–446 °F) and bed 50–70 °C (122–158 °F). The row lists both 1.75 mm and 2.85 mm. Drying on the wiki is a separate page. | ||||||
| 2 | Polymaker · Polylite PLA | PLA | 190–230 °C374–446 °F | 25–60 °C77–140 °F | Datasheet | |
PolyLite PLA lists 1.75 mm and 2.85 mm. Nozzle 190–230 °C (374–446 °F), bed 25–60 °C (77–140 °F), drying at 55 °C (131 °F) for 6 h on the US product page checked 14 October 2026. The sheet link is the temperature source. | ||||||
| 3 | SUNLU · PP | PP | 210–230 °C410–446 °F | — | — | |
SUNLU PP product page checked 20 October 2026. Nozzle 210–230 °C (410–446 °F). Bed temperature is blank. The catalog row lists 1.75 mm and 2.85 mm. | ||||||
| 4 | Eryone · PETG | PETG | 230–250 °C446–482 °F | — | — | |
Eryone PETG product page checked 19 October 2026. Nozzle 230–250 °C (446–482 °F). Bed temperature is blank. | ||||||
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Diameter tolerance is the question. The comments supplied for it do not measure one. 1.75 mm versus 2.85 mm is which melt zone the spool was drawn for.
What was actually written
a Reddit thread in r/3Dprinting: "\"Made in the USA\" There's your problem". "'Made in USA'. I think I found the issue." They are not a caliper reading. The same thread is cited on filament quality and budget filament for that reason.
a Reddit thread in r/3Dprinting is a stock of PETG and ABS, "total 435 kg," and a wish for a high-temp all-metal hotend. "A filament dryer or dehydrator will help you get your valve there." Drying is drying. A hotend that will not melt the loaded spool is a printer limit, not a tolerance.
The comments do not contain them.
Rows that list two diameters
SUNLU PLA lists 1.75 mm and 2.85 mm, with 190–230 °C (374–446 °F) and a bed of 50–70 °C (122–158 °F) from the Open Filament Database. PolyLite PLA lists both diameters, 190–230 °C (374–446 °F), 25–60 °C (77–140 °F), and drying at 55 °C (131 °F) for 6 h. SUNLU PP lists both diameters. The product page checked 20 October 2026 is the nozzle source, 210–230 °C (410–446 °F), and the bed is blank. Eryone PETG is 1.75 mm only in the catalog, nozzle 230–250 °C (446–482 °F) from the product page checked 19 October 2026, bed blank. PLA, PETG, and PP are the hubs. SUNLU and Polymaker are the brand indexes.
A diameter that wanders shows up as flow that changes along the spool, and a tight spot shows up as a clog.
Pros and cons
Pros
- Rows that list both 1.75 mm and 2.85 mm are named, with the temperature source labeled.
- Off-topic comments stay quoted, so a joke is not turned into a tolerance.
Cons
- No comments in this set reads a caliper.
- Eryone PETG's stored 0.03 mm tolerance has no checked sentence on the row. It is not cited as a spec.
Printer considerations
- A 2.85 mm spool does not go through a 1.75 mm hotend. The catalog diameter list is the check, not a comment in this bank.
- The comments do not. This page leaves that number out.
- Inconsistent diameter shows up as flow that changes along the spool. The flow page is that symptom. These comments are not a flow tower.
Sources & notes
Published . Updated .
- Polymaker US PolyLite PLA product page manufacturer
- SUNLU PP product page manufacturer
- Eryone PETG product page manufacturer
- Open Filament Database, SUNLU PLA other
- a Reddit thread in r/3Dprinting reddit
- a Reddit thread in r/3Dprinting reddit
- a Reddit thread in r/3Dprinting reddit
- a Reddit thread in r/prusa3d reddit
- a Reddit thread in r/FixMyPrint reddit
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Questions
Is ±0.02 mm the tolerance to require?
Not from this bank. The comments do not measure a filament.
Which of these rows list both 1.75 mm and 2.85 mm?
SUNLU PLA, PolyLite PLA, and SUNLU PP. SUNLU PLA's temperatures are the Open Filament Database row, 190–230 °C (374–446 °F) and 50–70 °C (122–158 °F). SUNLU PP's nozzle, 210–230 °C (410–446 °F), is the product page checked 20 October 2026, and the bed is blank.