hvlp and overspray

[jethrob]

I have few things I need to spray, and it's to cold to do outside.

I was thinking of buying an HVLP gun but I don't have much experince with one. I have an exhaust fan which is probably about the equivelenat of a box fan in a window. My ceiling are 12 foot. Am I going to have overspray all over everything if I do some indoor painting without a spray booth using HVLP? I can spray in the middle of the shop if that helps.

 

[TomB19]

It's always best to throw some plastic over your toolboxes and whatever you don't want overspray on but it won't be too bad if you keep the pressure down.

The key is to have enough pressure to get proper atomization but not so much that you create a paint cloud in the shop. That can take a small bit of experience to get down and you may have some overspray during that period.

 

[The Cobbler]

build a plastic tent to keep overspray to a minimum

 

[jethrob]

probably only going to spray a quart of paint or so if that helps

 

[CobraRed]

If you're worried and are set on buying a gun, use a LVLP - least amount of over spray between the 3 main subgroups of modern gravity guns.

I've used the EVO-T and loved it, spray a little slow but uses a lot less air and causes a lot less overspray. Reminds me of a big air brush.

 

[TomB19]

build a plastic tent to keep overspray to a minimum

I screwed some thin steel strips to the ceiling of my shop so I could use magnets to hold up 4 mill plastic sheet.

 

[jethrob]

I've got a metal ceiling.....

 

[jethrob]

If you're worried and are set on buying a gun, use a LVLP - least amount of over spray between the 3 main subgroups of modern gravity guns.

I've used the EVO-T and loved it, spray a little slow but uses a lot less air and causes a lot less overspray. Reminds me of a big air brush.

EVO-T looks nice.....it's HVLP though?

http://www.amazon.com/dp/B00HZBX14E/?tag=atomicindus08-20

thinking of getting some plastic and magnets. I already have an exhaust fan in the wall for engine fumes.

 

[Bsj04]

I painted a utility trailer frame in my shop with a HVLP gun and only got over spray on the floor, I should have used a bigger drop cloth. I did remove vehicles from the garage and cover a couple things before starting. The gun created a lot less of a cloud then spray cans would have, I was impressed. Next time I'll cover the floor better and one wall and try to only shoot into that corner.

 

[creativecars]

It is easy to build a basic frame (box) out of 2x4's or PVC and drape or staple the 4 mil plastic to the frame. You can take this down and reuse later.

 

[67King]

Overspray is like pollen. It doesn't matter how secluded you think stuff is, it'll find it. As others have suggested, you can set up a "booth" with plastic drop cloth. I've made a whole skeleton frame from PVC, and I've attached it to my ceiling. I really like the idea of metal strips and magnets, but the best way is to just build a skeleton frame, including the top, and cover the whole thing. You can rent a carpet dryer from Home Depot and use that as a fan, as it'll move a lot more air than box fans. Be sure to use a respirator!!!!

Another option is to wait for a day that isn't quite so cold, and buy the fastest reducer you can. Not sure where you are, "warm" may mean 20 degrees to you for all I know.

 

[steveo3002]

make a tent , everything will get covered in overspray

 

[shoot summ]

I've sprayed a lot of interior enamel with a Fuji HVLP in my garage. I make the area look like a Dexter kill room, plastic drop clothes on the floors, hanging, pretty well covered. And the over spray still gets in places that surprise me. So as others have stated, the more you cover, the better you are protected. I buy the cheap drop clothes at Home Depot.

 

[shepherd]

20 dollar box fan with a furnace filter near where you're spraying will help a lot....just make sure its all water based unless you can vent to the outside.

 

[CobraRed]

EVO-T looks nice.....it's HVLP though?

It's LVLP like I was saying, a newer style of HVLP which is more efficient but has a smaller spray foot print and uses less paint/air.

 

[Zeke]

Turbine powered HVLP's can be tuned way down. I can paint small parts and hardly see the atomized paint stream much less any overspray. Large and irregular parts present more difficulties. The secret is to try and not let any paint blow by the part. Turn the cap this way and that to have a pointed cone or a vertical/horizontal fan. The compressed air model will have an additional trim knob on the upper part of the handle. The Evo looks like it has one on the side.

Honestly, the HF guns for 20 bucks when not on sale are good for just about anything but a fine automobile finish. If you do use waterborne paint be sure to completely disassemble the gun after use. Flush it with water, then alcohol then lacquer thinner, acetone or MEK. Then run a touch of mineral spirits through to provide some protection from oxidation.

There is a reason or that procedure:
Water> flushes out most of the paint
Alcohol> dissolves the water
Lacquer thinner, et al.> flushes out emulsion residue
Mineral spirits> lubricate w/o contaminate

Nothing worse than a gun that has little bits of waterborne paint inside that come loose when you spray something thinned with reducer.

 

[CobraRed]

^+1 to all of that