Design and print a funnel (with basic Sketchup video tutorial).

In the winter time we refill the bird feeders regularly. Invariably I'd get bird seed all over the floor as I'd try to refill the container from a large bag of seed, so I decided to resolve the issue once and for all, and have some 3d printing fun along the way!The solution was a funnel with a wide exit, and a shoulder that would enable it to sit securely on the top of the container being filled.Didn't spill a single seed!I drew the funnel...

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The Penrose Triangle Illusion...

The Penrose Triangle...It's a great illusion of impossibly stacked little cubes, and readily printable, believe it or not! The STL file and full detail is posted here on Thingiverse. Credit goes to Jonathan Wong for explaining how he constructed the printable version of this illusion and providing instruction on how you can draw your own version. Some additional reference to the famous triangle may also be found here.The printing challenge:This...

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A simple door hook...

Quick post...There are many hooks on Thinkiverse, but I noticed this Headphone Hook by Misguided had employed a curve on the hanging tab to add strength to what otherwise would be it's weakness, a 90 Deg bend with a flat tab. A few minutes in Sketchup enabled a modification of the design to produce a very useful door hook!I narrowed the "U" so the door would close, even with the hook over the top (3mm gap). I also added two ridges to the "U"...

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