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Seat Spacer 3D Models: STL Files for Mounts and Brackets

This collection gathers 3D models that work as spacers, adapters and brackets, including parts meant to sit under or around a seat. The files range from simple rings and shims to shaped mounts that also hold a device. It helps when a 3D printer is the quickest way to make a small part that matches an unusual gap. 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.

Come è composta questa raccolta

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: 10/10/2026


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«Seat Spacer 3D Models: STL Files for Mounts and Brackets»

Spacers for seats and vehicle fittings usually appear as flat plates, rings or blocks with a bolt hole through them, and some are shaped to follow a rail or frame. Bicycle and board-binding spacers tend to be thin and round, while brackets and separators for equipment are longer and carry several holes. Customizable versions are published as parametric files, so one model can cover a range of diameters and thicknesses. Holders and mounts differ again: they combine a spacer function with a cradle or clip for a phone, cable or tool.

Before printing, measure the bolt diameter, the distance between holes and the thickness you need, then compare them with the dimensions given on the model page. Check how many separate parts the model has and whether the author lists the material and settings used, along with photos of a finished print. A spacer that carries load is usually printed with more walls and a higher infill than a decorative piece, and the orientation matters when the part has a shaped profile.

If a first search returns few results, try the words shim, standoff, riser, adapter, bracket or mount, which often describe the same kind of part. Adding the object you want to fit, such as a seat rail, a monitor arm or a handlebar, narrows the list further. Related topics include cable holders, shelf sitters and decorative figures, which share the same modeling approach even when the purpose is different.

FAQ

Domande frequenti

What is a seat spacer used for?
It fills a gap between a seat, rail or frame and the part bolted to it, changing height, angle or offset. The exact purpose depends on the model and on the fitting it was drawn for.
What should I check before printing a spacer?
Look at the bolt diameter, hole spacing, thickness and how the load travels through the part. The author's page often states dimensions, material and print settings.
Can I adjust a spacer model to my own dimensions?
Many spacers are shared as parametric or customizable files, so hole size, thickness or offset can be changed in CAD before exporting an STL.
Which search terms find similar models?
Try adapter, bracket, shim, standoff, riser or mount, or add the name of the part you are fitting, such as a seat rail or a handlebar.

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