HackerMaker is the culture and philosophy of creating, repairing and inventing out of whatever is available. Raw materials are no longer the raw materials with which we work.
Our prime materials have been extracted, cooked, processed, moulded and shaped cheaply and in large qualities to fit some purpose other than ours.
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Solar Powered 3D Printed Glass
Markus Kayser uses Sahara sun to sinter (melt and fuse) sand in a layered technique like 3D printing to produce glass objects.
He gives a talk and explanation in his TEDx talk.
If you subscribe to his YouTube channel, you will see his other sun-cutter video.
In Bang Goes the Theory these guys use focused sunlight to melt rock at 3,500 Celsius: "Just two square metres of sunlight can melt steel easily"
Dr Scott M. Baker says: I was tired of carrying media back and forth to my homebuilt XT computer, so I used dual-ported RAM to build a virtual floppy replacement that serves floppy images up from a raspberry pi. A small BIOS extension loaded into the dual-ported RAM simulates a floppy disk drive. Requests are made by the ISA PC, and served by the raspberry pi.