The Internet of Things (IoT) is essentially the internet we already have, but now it’s not just humans using it — all kinds of devices are using it too. Here's how to connect your fridge to a free IoT data service so it logs every door opening and even tweets when you're holding it open too long searching for midnight munchies! Another cool Internet of Things project from MAKE contributors Tod Kurt and Mike Kuniavsky.
The ever-growing variety of 3D printing filaments is amazing — we can now print in strong, flexible, glowing, and dissolvable plastics — but sometimes plastic isn’t the right material for the job. Sometimes, you just need metal!
Although the big boys in the industrial world can directly 3D print metal parts with laser sintering machines, this technology hasn’t yet reached consumers. However, you can make your own metal parts at home with the help of your 3D printer and these easy-to-learn metal casting techniques.









