When we began we had a lot of luck looking through this site and egullet's forums, and a few blog articles found along the way for the beginner steps to airbrushing cocoa butter & cocoa / chocolate mixes. Since we're always in operation its hard to dedicate a week to learning and troubleshooting so this has been a multi-month set of experiments and learning.
Currently all we need is broad stroke work so we ended up with a nice cheap, quiet air compressor and the quick change kit:
We also picked up this one but since we haven't needed anything further than bulk spray at the moment its staying in the box--
The issue I'm running into is some of the time the cocoa butter sprays, other times it does not. Fluidity and temperatures are equal, if I change the lid from one to the other that often fixes it, sometimes the working lid works, but only if its partially unscrewed-- but that's not at all efficient. After I clean and change parts a new one rises to being a working one..
For the ones that currently don't "work" if I detach the top a bit and keep it in the fluid, I can see it get drawn up, but it never seems to make it to the top. Switch a few tops out and one ends up being happier than the rest--but they all look the same.
It's just confounding me. After use I diligently clean in scorching hot water and use the pipe cleaners to clean each and every part. So if all things seem equal, what variable am I missing?
I know these kits are in use in some rather high throughput environments so while I could discount that I'm using cheap pieces I know those here and elsewhere are using them for their broad stroke application.
Anyhow, any thoughts or gotchas that you may have found along the way would be really helpful. If this continues I might take a video of it to show off the finer points of weird behavior.
updated by @andy-ciordia: 04/10/15 07:02:06AM