Obstructures’ drawing triangles (2018) were a small set of drafting implements, made of aluminum, with a 10° bend of the hypotenuese to form an inking edge. The smaller triangles also contain a series of holes that are at once decorative and functional and encode a set of arithmetically interesting and aesthetically useful proportions:
This project was funded through a Kickstarter campaign.
- powers of 2;
- the Pell–Lucas and the Pell series which each converge to 1+√2;
- A026150 and A002605 which converge to 1+√3;
- the Lucas and Fibonacci series which converge to phi or the golden section;
- and the Perrin and Padovan series which converge to the plastic constant.
This project was funded through a Kickstarter campaign.
![](https://freight.cargo.site/t/original/i/214c6317f0eb2b0215db426f5ebec933d37e59c981db7421798a20fa5905bbb6/OB_TRI_TH.jpg)
![](https://freight.cargo.site/t/original/i/c827c2991997a1c6e3e5ddc8fdfd5d8892ba7d0bbee9c5c859c21c83b9533986/OB_KS_TRI_D2-16.jpg)
![](https://freight.cargo.site/t/original/i/94a47fedc0ddc55d7b71bf83bb4cecbd3d508b7916cfadbd341a40dee9ec862f/OB_TRI_WS-9.jpg)
![](https://freight.cargo.site/t/original/i/fe97f9281cb5d7e48f601ffde16864c42eb0e27f47d6f097de0b32ef628558bf/OB_TRI_WS-1.jpg)