Radioactive, or anyone for that matter,

I have a Fuji mini mite 4 spray system. I keep spraying stuff with my gun, Lacquer, shellac, and now waterborne lacquer. No matter how good I clean the gun I seem to get stuff in my finish when I am spraying. So the other day while cleaning the gun I looked at the hose port and noticed it was dirty. I am now thinking that its coming from my hose. So I looked at it and it sure could be the cause of particles in my finish. I clean filter on the unit every so often. But I am thinking I may have to put the turbine in a filtered box to further provide it with a cleaner environment. That being said how do I clean the hose. Should I just hook it to the outside facet and let water just run though it or is there another method?

If there is an in-line filter available, you might want to install one close to the gun.

Paul
the little guy

I have a Fuji as well for mobile spray jobs, not as new as yours. Every time i had the unexplainable bugger in the middle of the finish it was always the needle. Had to to a complete disassemble and soak the needle in acetone. then take pipe cleaners and clean all the cap orifices. Some times I would soak the whole gun in acetone.

Could also be something getting past the o-rings. If yours has o-rings.

And as Paul said an inline filter.

Another problem is you might have cross contamination due to the three separate finishes in one gun. Just a little residual finish left behind that gets dissolved with the new finish.

I use two guns. one solely for a specific finish I use all the time (Polane) and the other for everything under the sun.

Who makes it and what kind of finish is Polane?

Polane is a two-component polyurethane production finish, it provides fast build times, is durable and scuff resistant. I believe its available from Sherwin Williams.

Ditto to what Mr Ritz said.

Polane has a higher solid content than traditional finishes. One use that I'm aware of is on the heads of those wood golf clubs. The big fat ones. I don't golf as you can tell.

If you are not interested in a full fill finish Polane is not the finish you want to use. Cost is around $60.00 to $70.00 a gallon . Catalyst is around 25.00 per quart. reducer 25.00 gallon. Reducer is just to clean out the gun.

Unlike Laq it does not melt into the previous coat. Each coat of Polane has to be wet sanded. Full fill will occur at two coats. Wet sand from 600 to 2000. A jitterbug will make life a whole lot easier.

Buffing compound is done with "Finesse-it" from 3M. they are nothing more than pumice in a binder and rotten stone in a binder. Makita or other buffer with a foam pad.



If the finish budget is good or the piece is going to receive a great deal of use like food and cups, liquid, then I will use PPG 180 global finish. Same process as above but 150.00 gallon 35.00 for the catalyst, 35.00 for the reducer.

The reason use use those two finishes is because a professional finisher told me They were "idiot proof". I hear that I'm sold.

Is it waterborne or solvent based?

The Polane clear topcoat is solvent based and must be cleaned up with reducer. Other products with low VOC or water based are available. I haven't tried SW Wood Classic Waterborne finish. But it appears it has a quick dry time.

Thanks for the reply,
I know its not the gun. I take it apart and clean everything all of the time. I have also replaced all of the o rings in this gun. I think I have had it for 3 years now.

I did not know they made in line filters for Turbine guns. I can look into that.

Is there anyway to clean the air hose?
You might try looking at the turbine unit itself. There could be dirt or something inside the units filter.

Speaking of in line filters, I just had the one on my compressor HVL sprayer take a dump, spraying final finish on a restored dresser and low and behold last pass and schzammmmmmmm water drops all over the flippin place

Is it simply dust or trash in the air that's settling or even something that's falling off of the outside of the gun or hose?

I can't say I've ever heard of a contamination issue from the inside of a turbine compressor and usually the heat produced will remove any moisture from the system. I use the 3m pps plastic cup system for all spray finishes and the nice thing about the system is that you have a built in strainer in the lid to the cup.

General Finishes has a newly improved waterborne poly that's out that is supposed to rival catalyzed solvent based conversion varnishes. I don't use these types of finishes on furniture other then on commercial jobs myself so I haven't tried it on anything other then touch ups as a sealer.

Hey Brian,

The finishes that you do use, on a full restore, are they generally replications of the original finish dependent on the age of the piece?

Generally I french polish most pieces with various types of shellac. To be honest most of my clients are after a certain look and if you know what you're doing you can achieve it with a variety of finishes.