This week’s Hackaday podcast is a European affair again, as Elliot Williams is joined by Jenny List on a summer evening to review the week. As the title above says, one of the stand-out hacks this week was a set of airless mountain bike tyres 3D printed in glorious fluorescent TPU. They look as though they shouldn’t work but in fact they showed real promise, and we discuss the process behind their design. Then we take a look at a hybrid of a UV printer and an SLA 3D printer, capable of making high-resolution and robust 3D prints. Follow that one up and you’ll find a bonus, an unofficial extra Hackaday podcast.