> I get to drilling and after 25 minutes of learning how to keep it straight and the wonders of noise cancelling earphones, I have a neat 60mm hole with a plastic insert.
Pardon my nitpick but in case it helps save anybody else's hearing: noise-canceling headphones are not hearing protection! Hearing protection devices create a physical barrier between the noise source and your ears. Noise-canceling headphones use a microphone to listen to your surroundings and create an inverse sound wave. Due to their imperfect nature (latency, inability to reproduce certain sounds, etc) they are not adequately protecting your ears, especially for higher-frequency sounds like a drill motor: https://en.wikipedia.org/wiki/Active_noise_control
Yeah the 3M over-ear hearing protection is great. Also you don't necessarily need thread sealing tape. Thread sealing tape is for threaded fittings like FIP/MIP where the threads provide the seal directly. Washer hoses use compression fittings and so you're better off putting a little plumbing grease on the gasket but otherwise you don't need thread seal for that type of fitting.
But that's only true in the worst kind of way, the technical one. Yes they aren't literally meant to be hearing protection. Yet, if they work well enough that I'm not hearing any loud sounds, then they're obviously protecting me adequately for the situation.
Side-note: Latency isn't a concern, the electronics are built to process input between mic and speaker at the speed of sound. Otherwise it wouldn't even really work except for static frequencies as I understand it.
Pardon my nitpick but in case it helps save anybody else's hearing: noise-canceling headphones are not hearing protection! Hearing protection devices create a physical barrier between the noise source and your ears. Noise-canceling headphones use a microphone to listen to your surroundings and create an inverse sound wave. Due to their imperfect nature (latency, inability to reproduce certain sounds, etc) they are not adequately protecting your ears, especially for higher-frequency sounds like a drill motor: https://en.wikipedia.org/wiki/Active_noise_control
If you want hearing protection and music, you want something like these: https://www.3m.com/3M/en_US/p/d/cbgnawus1754/
edit: also should have used some teflon tape on the threads of the washer hoses to prevent leaks: https://en.wikipedia.org/wiki/Thread_seal_tape