Ethan Steele’s Guzzleine Antifrost Device: A 3D‑Printed Solution to Winter Fuel Pump Hassles

Ethan Steele, a sales representative at MarkForged, grew up in Massachusetts before moving to California and returning home as an adult. During the harsh Boston winters he found that the pumps at local stations were devoid of any protective covers for the handle, forcing him to endure icy temperatures while filling up.

After researching the issue online, Ethan learned that Massachusetts prohibits automatic pumping for safety reasons—static electricity in the dry winter air could spark an explosion. The state only updated its regulations in January 2015, and most fuel pumps still lack the technology to keep the handle warm.

Inspiration for the Guzzleine Antifrost Device

Using TinkerCAD, Ethan sketched a small, wrap‑around sleeve that fits over the vinyl pump handle. The device features teeth to grip the handle and a tiny cylindrical cavity that houses a magnet, allowing the sleeve to stick to the top of the fuel filler when not in use.

After exporting the STL, he imported the file into MarkForged’s software and printed it on a Mark One. The build matched the TinkerCAD scale, required no composite reinforcement, and did not need supports or a brim.

3D Printing the Guzzleine

The device is printed in Nylon on a Mark One, taking approximately 1 hour 6 minutes. Ethan inserted the magnet once the print finished. He produced a run of four units for colleagues, many of whom had faced the same cold‑pump problem.

Below is a photo of a Guzzleine Antifrost Device magnetically attached to the top of a fuel filler, ready for use. Follow MarkForged on Twitter and Facebook for action shots of the device in the field.

Specifications

Guzzleine Antifrost Device: 59.44 mm × 50 mm × 10 mm; estimated print time ~1 h 6 m; Nylon cost $0.89; STL download; MFP download. You can also download the Guzzleine on Thingiverse.