Was watching Jaime Rodriguezs video about tips and tricks and he reccomended putting Teflon tape on the nozzle threads to ensure a tight seal. My question is: since I take that off frequently to clean my brush, will the tape hold up, do I need to re-tape it every time, or is there something else I'm missing?
As Diego said you only want to use the tape if you have a rubber seal and you want to use uro's, if you are using water based paints you don't to do this.
But to add to this, you should only remove your nozzle if a full strip down in necessary or you have a clog and blasting won't move it.
If you frequently blast cleaner thorough your gun you shouldn't have a problem.
To help you avoid the need fro frequent strip downs, filter your paint before use, I mix my colours before starting a project and put my colours into a squeeze/dropper bottle, before replacing the lid or dropper on the bottle I put a small square of old pantihose over the neck of the bottle which means my paint is being filtered also as I work, I replace this home made filter at the start of each day since the paint dries onto the old one overnight.
Using this tip and optimal paint thickness and air pressure will minimise the need for unnecessary strip downs.
Note that over frequent removal and replacement of your nozzle will eventually affect the fit making it difficult to get a good seal no matter how much tape you use.