duffyt's comments

duffyt | 4 years ago | on: Experiments on a $50 DIY air purifier (2020)

Yeah, I think these DIY filter plans are great and I've built them myself, but I switched to commercial purifiers because of the sound. I don't have measurements but the box fan is substantially louder than either the Blue Air 211 or the Levoit Core 200 that I have.

duffyt | 10 years ago | on: HN now mostly readable on mobile

Same problem here. You can see the same effect on desktop FF by narrowing your window.

duffyt | 11 years ago | on: SpaceX Has Pinpointed the Problem That Caused the Falcon9 to Crash Land

Hydraulic systems are usually closed, can anyone explain why hydraulic fluid is expendable in this case?

duffyt | 11 years ago | on: Startups fighting over the word 'zen'

Personally, when I first heard of Zenpayroll and Zenefits I though they were similar enough services that they might be associated with Zendesk. I think there's definitely possibility of confusion.

http://marklaw.com/trademark-glossary/confuse.htm