Quote Originally Posted by Neale View Post
I would not have expected it to have the air flow needed
Nozzle size is critical, with low flow but a small nozzle you can generate a high pressure & speed at the nozzle and surrounding air will be drawn in and add to the mass of air shifting chips.
I experimented with a variety of ideas, you can grease a length of piano wire and use a 3-jaw lathe chuck to crimp copper pipe down to a nozzle of known size, eBay is a good source of canula needles which are also good,

- Nick