Replies

1. 
   Mark_Roderick | Jul 30, 1999 02:29am | #1

   *
   I haven't sprayed shellac, but the first time I used it I remember being surprised how sticky and fast-drying it is. You put it on the brush, take a stroke, and its starting to get gummy. So I bet that's what's happening with you, especially considering the temperature and humidity. Maybe try a 1 lb cut instead and spray extra cuts? By the way, are you using a turbine-driven spray gun, which would heat it even more?

1. 
   Sgian_Dubh | Jul 30, 1999 01:33pm | #2

   *Inspect and unclog the vent in the cap. Have you ever used water based finish in this gun? That'll screw it up well and truly if you haven't been scrupulous about cleaning and drying the parts.

1. 
   Kinger | Jul 30, 1999 07:58pm | #3

   *The gun I am using is a HVLP conversion gun. I have never sprayed waterborn finishes yet. So does adding more alcohol increase the drying time?

1. 
   Sgian_Dubh | Jul 31, 1999 04:15am | #4

   *Primarily, Alchohol helps atomisation and flow out. Thinner liquid to atomise. You may well need an extra coat or two, but there is no harm in that.Avoid water finishes unless you are ASOLUTELY meticulous about cleaning up IMMEDIATELY (yes, I am shouting, sorry.) Water borne stuff dries hard, but unlike pre-cat, for e.g., can't be dissolved with the appropriate thinner, in this case water. Rust is also a pig. Guns are available with stainless steel and other non-rusting parts, but you still have to be meticulous about cleaning after water finishes for the reasons I've given.Personally, I don't use water based stuff. Tried it a few times a while back, but the bother and poor quality lustre, sheen, et al all put me off. It is supposed to have improved a bit since then, so one day in the next few years I might give it another whirl! There are plenty of other finishes I'd rather use than water borne for the time being.