Scuba Rattle

thingiverse

This is an underwater noisemaker for communicating while scuba diving. I simply start the print and after the wall is formed up about an inch, I drop in a couple of 1/4 20 nuts. Anything heavy enough to shake should work, but I had these in my basement. The loop on top should attach to a small carabiner or to a key-chain Alternatively, tie some cord and attach it wherever is convenient and safe. I print it solid for strength and water-tightness. Print Settings Printer Brand: Ultimaker Printer: Ultimaker 2 Rafts: No Supports: No Resolution: .2 Infill: 100 Notes: I print it standing straight on its end. The arch should hold it just fine for printing vertically. Post-Printing You can brush it with acetone, if printing in ABS, paint or smooth it, or use it as is.