One handed bottle open project

by ademczuk, published

One handed bottle open project by ademczuk Jul 29, 2013


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5318Views 796Downloads Found in Kitchen & Dining



  • Reshaped design
  • Added a second model (magnet lip) with a slot (instead of a coin or paperweight) in case you have two extra 3x6mm cylinder magnets.

I've fit mattarang's attempt parametrically to the standard bottlecap diameter of 28.5mm and space for a magnet of 3mm x 6mm (with 0.3mm space to correct for extrusion width). As a bonus I've beveled the edges. Be sure to print it flat on the printbed and use close to 100% infill as 30% reportedly breaks at the thinnest point.

You can buy the magnets from ebay for under $1 for 10. http://tinyurl.com/m586ry3

This is a work in progress to discover more about the Structural and Legal weaknesses in 3D printing.

Other versions:


Autodesk Inventor trial, about 30mins work.

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Excellent, will make and post.

Patent covered, you shouldn't do that.

I printed one and it failed. PLA, 30 % infill and it failed. exactly at the thinnest part. I will upload a picture soon. I will try at 80% infill, if that doesn't work I will remix it to add some extra strength.

The moment I saw the original one on Reddit I realized that would be so simple to remake for 3D printing. But not being one to open a lot of bottles I didn't try my hand at it myself.

Beware, tho, the Gropener is "patent pending". Could be stepping on some toes here.

Is it ok so long as you don't sell it, or does even having an identical model freely available infringe on a patent?

Does copying a DVD and putting it available for free online infringe copyright? You don't have to be making money to break the rules.