Models
Free STL downloads for calibration and fun. Each test print is paired with tips on what to look for and which settings to tune.
Calibration Cube (XYZ)
Verifies dimensional accuracy on all three axes. Measure the X, Y, and Z faces with calipers and compare to the target dimensions to catch scaling issues and step miscalibration.
Temperature Tower
Identifies the optimal nozzle temperature for your specific filament brand. Each section prints at a different temperature so you can compare surface quality, stringing, bridging, and layer adhesion side by side.
Retraction Tower
Dials in retraction distance and speed to eliminate stringing and hairing between sections. Each tier tests a different retraction value so you can pinpoint the cleanest result.
Overhang Test
Tests how well your printer and cooling setup handles unsupported overhangs at increasing angles, typically from 10° up to 70° or beyond. Reveals the true limits of your cooling and speed settings.
3DBenchy
The industry-standard 3D printing benchmark. Tests overall printer performance including overhangs, bridging, stringing, surface quality, and dimensional accuracy — all in one iconic boat-shaped print.
Flow Rate Cube
A single-wall hollow cube used to calibrate your extrusion multiplier. Measure the wall thickness with calipers and compare against your target line width to calculate the correct flow rate percentage.
Bed Level Test
Prints a thin layer pattern across the full build plate to reveal leveling inconsistencies. Spots high and low zones that cause adhesion failures or elephant foot in specific regions of your bed.
Phil-a-ment
A comprehensive filament-testing model that evaluates bridging, overhangs, stringing, surface quality, and fine details in a single print. Great for comparing different filament brands head to head.
All in One Calibration
A single model covering multiple calibration checks — tolerance, overhang, bridging, retraction, Z-offset, and surface finish. Efficient when you want a full-system check without printing multiple separate models.
All the tools, calculators, and models on this site are free and always will be — no accounts, no paywalls, no catches. That doesn't change.
But if you need something specific that isn't in the library — a bracket with exact tolerances, a custom enclosure, a part that fits your exact hardware — that's where commissions come in. Fill out the form and I'll get back to you with a quote before any work starts.
- Functional brackets, mounts, and holders
- Custom enclosures and housings
- Mechanical assemblies and moving parts
- Parts that must fit around existing hardware
- Anything requiring specific dimensions or tolerances
Organic shapes, figurines, characters, or sculpted artwork.