For dusting negatives, I have been using an old paint compressor that belonged to my Dad. This thing is ancient and may actually be older than me. It had gotten to the point where it only put out about 40 psi - useless for paint, but perfect for dusting negs.
Like everything else from the darkroom, it has been idle for about a year and a half, but I took it into the new darkroom yesterday and cranked it up. The first time it came on, it didn’t sound right. I shut the switch off and started it again. This time, just a buzz for two seconds and then: SMOKE!
The old machine finally froze up. It’s not worth trying to fix. It has more sentimental value than anything. However, it doesn’t have enough sentimental value to keep. So long.
Now to get the smoke smell out of the darkroom and buy a small fire extinguisher.