The goal of Copter Parts is to enable low cost building of autonomous quad-copters for learning, experimenting and fun flying.

Links to download free STL files are in the Download Parts section. Units for all STL files is millimeters.

The CAD drawings used to create the STL files use parametrics, which allow for easy changing the basic dimension of the parts. Requests for new sizes of all parts will be considered.

Information and suggestions about materials are in the Materials section.

Illustrated information about assembling the parts is in the Assembly section.

Information about 3D printing is limited to suggestions about infill, print orientation and supports.

Home or hobby printers are capable of printing all parts.

Parts may also be submitted to commercial print shops for manufacture. Prices for this vary can and be as low as $100 (or less) for a complete set of parts. Two services I have used are PCBWay in China and 3D Printing Tech in Atlanta, Georgia.

The builder is free to use any electronics that can be fit. Motors are limited to those with 16mm and 19mm mounting hole dimensions. I have included information and examples of quad-copters I have built with these parts.

Components such as motors, ESC’s, flight controller, radio receiver, GPS, current sensor and remote-ID, will be selected and installed by the builder. For a first-time quad-copter build, this may be challenging. On-line references and support forums are good resources.

After construction the quad-copter must be configured and “tuned” with the parameters of the flight controller firmware. This is an essential step and is not included in this documentation. Each flight controller program has its own educational resources.

Copter Parts assumes the user has some basic understanding of sUAS equipment such as control radios, safety protocol, battery management and local regulations. Copter Parts assumes no liability for operating any sUAS by others.

Questions are encouraged and always welcome.