What if you could create custom 3D printable models without learning CAD? The TekOnline Parametric 3D Generator is a free browser-based tool that lets you pick a model type, adjust a few sliders, preview it in 3D and download a ready-to-print STL file — no design skills needed.
Open the Parametric 3D Generator
What is a parametric 3D generator?
A parametric generator creates 3D models from parameters — numbers you choose, like width, height, thickness or diameter. Instead of drawing geometry by hand, you set the values that matter and the software builds the model. It’s like a configurator for 3D printing.
Traditional CAD requires learning Fusion 360, FreeCAD or Blender. A parametric generator replaces that learning curve with a simple form. You pick a preset, tweak the numbers and hit generate.
Eight generators, one platform
The generator started as a Gridfinity bin maker but has grown into a full parametric 3D printing toolkit:
- Gridfinity Bin Generator — custom storage bins with dividers, stacking lip, scoop, basket sides, magnet/screw holes, and dovetail connectors
- Gridfinity Baseplate Generator — thin, weighted, skeletonized, and screw-together baseplates with countersink/counterbore options
- Flower Pot Generator — tapered planters with drain hole and optional drainage feet
- Washer & Spacer Generator — flat washers, solid spacers and shims with adjustable OD, ID, and thickness
- Test Tube Holder Generator — Gridfinity-compatible racks for lab tubes, drills, tools
- Clickfinity Baseplate Generator — locking baseplates with snap-fit connectors (no magnets needed)
- Funnel Generator — parametric funnels with optional anti-suction ribs
- Epoxy Mixing Nozzle Generator — Chemset/Ramset-compatible static mixing nozzles; print for pennies instead of buying packs
Switch between generators using the searchable dropdown. Each tool has its own parameters, presets and instant 3D preview.
No CAD skills required
Every generator follows the same workflow:
- Pick a generator type from the dropdown
- Choose a preset or adjust the parameters with sliders and number inputs
- Click Generate Preview to see the 3D model update in real time
- Download the STL file
- Open in Bambu Studio, Orca Slicer or PrusaSlicer with one click
No software to install. No CAD to learn. No account required.
Why a parametric generator beats downloading STLs
- Exact dimensions: get the size you need, not the closest STL someone uploaded
- No scaling: scaling a downloaded STL breaks tolerances; parametric generation preserves them
- Faster iteration: tweak a slider and re-generate in seconds vs. re-modelling in CAD
- Always free: no paywall, no credits, no sign-up — download as many STLs as you want
Workshop to lab — tools for every maker
Whether you are organising a workshop with Gridfinity, printing planters for the garden, generating washers for a mechanical build, or saving money on epoxy mixing nozzles, the parametric generator covers the full workflow. Each tool shares the same backend (OpenSCAD + Three.js) so the quality is consistent across every generator type.
Try the free parametric 3D generator now — no CAD skills needed
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