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PrintablesDavid Leppik

Nesting Diatoms

Diatoms are common single-celled organisms that grow glass (yes, real glass!) shells. They are found all over the world and are an important part of healthy ocean, lake and stream ecosystems. In fact, by comparing diatom shells in a…

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PrintablesDavid Leppik

Owl Paperclips

Cute little paperclips. The gcode and 3MF version includes color change stops for printing multicolor (three stops: no multifilament printer upgrade required.) Includes the year (2023) but if you don't want it, there's an STL file without…

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PrintablesDavid Leppik

Consent FRIES

FRIES stands for Freely Given, Reversible, Informed, Enthusiastic, and Specific. These are sturdy and easy to print. Students can pick a fry from the box and discuss it. This latest version has raised lettering on the fries so you can add…

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PrintablesDavid Leppik

Bloom Filters

Bloom filters are a space-efficient data structure for determining whether or not an item is a member of a set. They are used in many popular databases and internet infrastructure. When I code bitwise algorithms, I see them as pixel…

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