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Download Functional 3D-Printable Parts in an Exact Custom Size

StreamSolid is a catalog of vetted, functional 3D-printable parts. On eligible models you enter the dimensions you need and StreamSolid generates that exact size from the parametric CAD model, typically in about thirty seconds. The standard size of every published model is a free STL with no account.

Why an Exact Size Beats Scaling a File

Scaling an STL stretches every feature at once, so holes, walls and clearances change with it. StreamSolid regenerates every size from the parametric CAD model and never scales one file. Values stay inside the range each model publishes.

How to Get a Part in Your Size

  1. Find the part in the catalog. Search by name or filter by category.
  2. Open the model page. Eligible models show a Custom Size panel.
  3. Enter the dimensions the model exposes, such as the size you measured.
  4. StreamSolid generates that exact size and you download a print-ready STL.

What the Parts Are Built For

  • Parts that have to fit and work: garage and workshop, spacing and aligning, measuring and marking, and holding and organizing.
  • Support-free printing, with flat bases and overhangs kept within forty-five degrees.
  • Tolerances tuned for common nozzle sizes, with clearance built into parts that fit a pipe, board, cable or bolt.
  • A list of the hardware each part needs, with buy links, and sizes in metric and imperial.

Read How Fit Works if your printer runs tight or loose.

What It Costs

  • Standard size, no account: a free, print-ready STL of any model.
  • Free account: 10 Custom Builds, each one exact size on any eligible model.
  • Per-Model Unlock: a one-time purchase for every size of one model, with unlimited Custom Size on that model. The price is on the model page.
  • StreamSolid Pro: every model and every size, Custom Size on every eligible model and a commercial license. Pro is not open yet.

See Pricing for the full details. StreamSolid is in beta.

Questions

Is the Standard Size Free?

Yes. The standard size of every published model is a free, print-ready STL, with no account needed.

How Many Custom Sizes Can I Make for Free?

A free account gets 10 Custom Builds. Each one generates one exact size on any eligible model. After that, further custom sizes need a Per-Model Unlock or StreamSolid Pro.

Does Every Model Have Custom Size?

No. Custom Size applies to eligible models only. A model is eligible when it publishes a parametric configurator, and an eligible model shows a Custom Size panel.

How Long Does a Custom Size Take?

StreamSolid typically generates the exact size in about thirty seconds.

Do I Get the Fusion Source File?

No. Every plan delivers print-ready STL. Fusion source files are not included with any plan.

Can I Sell the Parts I Print?

Free downloads and Per-Model Unlocks are for personal or internal use only. StreamSolid Pro will include a commercial license for selling printed parts. Pro is not open yet.

Checked 2026-10-09