Swingline 350 MD 3 Hole Punch Replacement Gear by IVIUPPET 3d model
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Swingline 350 MD 3 Hole Punch Replacement Gear by IVIUPPET

Swingline 350 MD 3 Hole Punch Replacement Gear by IVIUPPET

by Thingiverse
Last crawled date: 3 years, 4 months ago
Edit: This thing has been driving a 50 sheet punch for thousands of students for over a year now! I honestly cannot believe how well this held up. I'm wondering why the original one broke.....
Our Swingline 350 MD main drive gear had a few teeth sheared off (see pictures) and the parts are now out of production. 3D printing to the rescue! To my amazement, this 100% infill PLA printed gear has now been in service for close to 6 months being used by hundreds of university students to punch large stacks of engineering homework and is still going strong. This was a prototype, and to be honest, I didn't think it would actually work, especially for 6 months.

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