About air nozzle extensions:
I have one my grandfather made for me about 15-20 years ago (before I had a
compressor, even); basically the same idea, except it is made w/ 1/4" od
copper tubing. The problem w/ this is it tended to become loose (the copper
compressed), so I ended up soldering it together-have had no more problems
(that was about 10 years ago)
I put a slight bend in the last 1/2" (near the tip, about 10-15 degrees or
so) that makes it easier to direct the air flow; however this makes it jump
sideways slightly when turning it on & off.
Happy dusting! Scott M Ryan
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