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+-- Thread: want to slow down some shellac (/showthread.php?tid=7322332)
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RE: want to slow down some shellac - Rob Young - 09-04-2016
(09-04-2016, 08:41 AM)arw01 Wrote: Thank you again for answers, found the equipment on the link above, and although I do not have the compressor to run latex, will take up a conversation with Todd about a turbine system. Was really intrigued with the clear cups and the bag liners Seemed like something I could leave a bit of shellac in between coats and toss in the refrigerator.
Not sure how much latex I will ever really spray, but it sure sounds nice next time the wifey decides she does not like the paint color in the house. And hour of taping off and $10 in drop clothes sounds nice.
Keep in mind that under-gun turbine systems aren't really suited to spraying latex wall paint. That stuff can be very thick. You can add pressure pots to increase your spray time and add a small air compressor to assist. But in the end, wall paint is better applied with an airless (pump) system.
That said, I've read about people using a turbine to do the cutting in at the ceiling because the resulting pattern more closely resembles that from a roller. Then they roll the rest of the wall.
Acrylic latex enamel, on the other hand, can be easily sprayed with a turbine. I've done a couple of outdoor chairs and an ottoman for the deck. Worked great for both the primer and the paint. Did require just a bit of minimal thinning as I don't have a tip greater than 1.8mm.
The clear bags I refer to are not sealable. They are intended only as liners. However the 3M PPS cup/liner system can be adapted to nearly any turbine gun that also has a pressure pick-off for the cup. I have not tried this.
With a turbine I've sprayed clear finishes such as 3# down to 1# shellac, waterborne polyurethenes, BIN primer, GF Milk Paint (acrylic paint), acrylic latex enamel and had no problems. I'm working my way up to a large enough project that it would make sense to spray a dye.
The Earlex 5500 is a 2 stage, the A401 is a 4 stage. A little more than 2psi & 60cfm vs a little more than 8psi and 100cfm. More turbine blades increase both the pressure AND cubic feet per minute of air moved. This means less thinning and the ability to use a smaller needle/nozzle for the same viscosity and (in theory) better atomization. Both are pressurized under-gun cups and both are bleeder style guns. Cleanup should be about the same for both. Whatever gun you get, extra parts like gaskets and pressure tubes/check valves is a must.
RE: want to slow down some shellac - arw01 - 09-06-2016
I may be better to change my compressor to something a bit bigger, so many choices in this and hard to tell when you have never sprayed any finish besides a rattle can to see what you might have success with.
Todd indicated I needed about 2x my compressor volume to get into the gun discussed up above, which makes one think about a turbine system and then you wonder do I need to spend $600 or $1500.
RE: want to slow down some shellac - Rob Young - 09-06-2016
(09-06-2016, 04:04 PM)arw01 Wrote: I may be better to change my compressor to something a bit bigger, so many choices in this and hard to tell when you have never sprayed any finish besides a rattle can to see what you might have success with.
Todd indicated I needed about 2x my compressor volume to get into the gun discussed up above, which makes one think about a turbine system and then you wonder do I need to spend $600 or $1500.
I decided to go with a turbine system because after much thought, I didn't feel that my future project list would benefit from the purchase of a larger compressor (I have a small one that is capable of running a 23 and 18ga pinners). I've stopped working on cars and I just couldn't see the need to switch over to other air powered tools.
For about the same money as I would spend on a conversion gun + good compressor + air accessories I could purchase a nice 4 stage system. While a turbine system isn't the ideal for painting interior surfaces, I do have on my long term list to replace kitchen cabinets but I've also though about a basic refinish job on them. Likewise, the previous owner of my house put in cabinets in the basement rec-room but they have a pickled finish which I don't like. Those I would probably just paint. A turbine system and some creative masking would let me work in-situ.
You need to think about what your future needs might be before making a decision. Then do the research on the types of finishes you expect to use and from those two things you can pick out a system that works for you at a price you can live with.