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3D Printing Parts and Add-ons: STL Collection

This collection covers STL add-ons and replacement parts for 3D printing setups. It includes spool holders, belt tensioners, cooling ducts, enclosure components and storage pieces. Use it to find practical upgrades and repairs for a 3D printer. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Il testo di questa raccolta è in inglese; la ricerca funziona in qualsiasi lingua.

Una raccolta di Polyzon · 46 modelli da 7 siti

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Polyzon compone questa raccolta a partire dai risultati di ricerca dei siti collegati. I doppioni e i modelli senza anteprima vengono rimossi, le corrispondenze deboli finiscono in fondo e il resto mantiene l’ordine dei risultati. I modelli appartengono ai rispettivi autori: verifica le condizioni sulla pagina di ciascun modello.

Criteri di selezione a cura della redazione di Polyzon · Testo aggiornato: 14/10/2026

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«3D Printing Parts and Add-ons: STL Collection»

The collection spans several practical categories. Filament spool holders and mounts keep a reel in place, while belt tensioners adjust axis belts. Cooling ducts and fan shrouds direct airflow around a printed part, and enclosure parts include panels, doors and hinges. Storage add-ons cover drawers, waste chutes, feet and small trays.

When choosing a model, check the dimensions and scale first, then look at the number of parts and whether assembly is required. The author's page should state if supports are needed, which material was used and which settings were tested. Photos of real prints help you judge fit and finish before you slice the file.

To refine the search, try synonyms and related terms such as printer upgrades, printer mods, spool holder, belt tensioner, fan duct, enclosure, waste chute, drawer or feet. Combining a part type with your printer series can narrow results, but verify the mounting points and clearances on the model page. Related topics like tool holders, cable management and LED strip mounts often appear alongside these parts.

FAQ

Domande frequenti

What kinds of 3D printer add-ons can be printed?
Common examples include spool holders, belt tensioners, cooling ducts, enclosure parts and storage pieces. The exact mix depends on the printer and the author's design.
How do I choose a spool holder or belt tensioner?
Check the mounting method, dimensions and hardware the author lists. Look at the photos and read the notes to see how the part attaches and whether it needs extra screws or bearings.
Do these models need supports?
It depends on the geometry. The model page usually says whether supports are required and which print orientation the author recommends.
Can I adapt a model for a different printer?
You can scale or modify some STL files, but check that mounting holes and clearances still match your setup. If the part is structural, confirm the dimensions before printing.
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