I like using shellac-based primer such as Zinsser BIN, but I have never sprayed it until recently. The can says it can be sprayed, so I used an HVLP gun, installed a 2.0mm tip/needle, and started spraying. Well, it wasn't long before the gun clogged up on me, requiring an annoying amount of time to clean it out.
So, I tried a Wagner power-painter next. That worked for a while longer, but that eventually clogged up too, even though I was constantly wiping the tip off with alcohol to keep it clear.
So what am I doing wrong? Are there any tips you can share with me? Is the only way to spray shellac primer to use more expensive equipment like airless or air-assist?
From contributor J:
Check for a filter in the gun head under the gravity cup if that's what you’re using. It will clog almost instantly, with heavy bodied material. With a 2.0 tip it should be fine.