Quote Originally Posted by magicniner View Post
A peristaltic pump with a stepper gives you positive and predictable fluid delivery, no pressurised containers with pressure settings, needle valves, fluid viscosity and so on to upset the balance of perfect lube volume delivery.

It's all completed and connected up, right this minute it's lubing, with just enough air to clear chips from the cut, a job cutting parts from 2mm D2 Tool Steel plate with a 2mm 4 flute EM, seems to work nicely :D
Sounds good ! I have a spare stepper and driver plus I think there is a psu somewhere. I guess a variable pulse generator is a pretty cheap module to buy ?
Silly question but does the drip feed into the last part of the nozzle inside the tube or does it drip into the air flow?