Print. Wire. Flash. Repeat.

Practical 3D printing & microcontroller projects - plus a free Fusion 360 Toolkit to speed up your modeling and exports.

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Batch-export STLs in one click • Realistic Bambu/Polymaker colors • Smart face selection • Trusted by 139 makers

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3D Printing

Ready-to-print STL files for models, upgrades, and tools

Arduino

Complete builds with schematics, code, and parts lists

ESP32

WiFi and Bluetooth IoT builds with complete source code

PrintBusters Toolkit for Fusion 360

A free add-in with tools for 3D printing workflows. Install once, find it in the Modify menu.

Filament Colors

Adds 126 real filament colors from Bambu Lab and Polymaker as Fusion 360 appearances.

Batch Export STL

Export every body to its own STL in one click. Choose scope, mesh quality, and output format.

Select by Area

Select one profile or face, find every match in your design. No more clicking them one by one.

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Trusted by 139 makers

Build these Projects

These are our latest builds.

9-to-5 tachometer piston clock

9-to-5 Tachometer Piston Clock

RPM-style desk clock on a 3D-printed piston. You print the parts; add Bambu Lab Clock Kit 011 and two M5 screws. No MMU required. Dial goes 9 to 17 with the red zone at 3.

Colors used
Beginner
3D Printing
STL
8.3h
Desk DecorAutomotiveClock
Build this Project
3D-printed Clippy paperclip desk buddy with large cartoon eyes

Clippy

A Clippy-style paperclip desk buddy with big cartoon eyes.

Colors used
Beginner
3D Printing
STL
1h
Office
Build this Project
Snowflake fridge magnet with a smiling face

Snowflake Fridge Magnets

A smiling snowflake fridge magnet with a chunky outline.

Colors used
Beginner
3D Printing
STL
57m
Fridge Magnet
Build this Project

Quick Fixes & Scripts

Short fixes, scripts, and copy-paste patterns.

Why won't my 3D print stick to the bed?

Fix first layer problems: bed leveling, Z-offset, temperatures, and surface prep. No warping, no spaghetti.

Beginner
3D Printing
Guide
3 min
Read the fix

Do multiple things at once (without delay)

The basic millis() timer pattern that lets LEDs, sensors, and buttons run together without blocking your loop.

Beginner
Timing
Guide
2 min
Read the pattern

ESP32 brownout reset

Seeing “brownout detector was triggered”? Here’s the power checklist that stops random resets.

Beginner
ESP32
Guide
2 min
Read the fix
Browse Projects