Stethoscope directional cone for engine noise finding

thingiverse

Vey simple 30mm cone for plugging into a cheapy stethoscope set bought online (like $5). The stethoscope comes with a doctors type diaphragm pickup, but to find noisy bearings on my cars accessories (A/C, alternator, P/Steering etc) I found that it's less than good. So I replaced it with a simple cone which works better for this purpose. Even individual injectors can be heard ticking away individually with it... I didn't put any science into the design, but it works OK. Print Settings Printer Brand: RepRap Printer: Prusa I3 Rafts: Doesn't Matter Supports: Yes Resolution: 0.2 layers Infill: Make walls solid, 1mm thick...