Spray gun tip sizes?

M

MaStuart

I have a sheet metal enclosure to spray some epoxie on. All I have are some old siphon feed sharps. Anyone have an Idea of what size the tips are on these? One is a model 775 the other one I am not sure. I also have a clear coat cap for one of them. A friend brought over a harbor freight purple gun that is gravity feed. Any idea what size tip it might have. The SPI tech manual says they I should use a 1.4 or 1.5 tips with there epoxie. I hope someone knows .

After looking more I see the purple gun has a 1.4 on the air cap. Is this accurate and will it work ok for the epoxie?
 
I have the 775 too, haven't used it in years, no markings on mine for tip size
but it will spray anything you put in it really well.
One of the best spraying guns I've ever used.
 
With old guns sitting around, be sure to remove needle& get a little Vaseline on the back half of them & work into the packing nut.
If your epoxy ends up spraying rough, you could reduce it & spray thinner coats.
Cool thing I just thought of for the old guns, used to get a 10 pack of siphon feed bags from HF for around a dollar.
 
Just sprayed SPI epoxy (no reducer) with a 1.4 in a FLG5 (aka SGK) and it sprayed beautifully (looks like a single stage topccoat finish) . But my recollection of the old siphon guns is that they need a larger tip than the gravity guns.
 
be sure to remove needle& get a little Vaseline on the back half of them & work into the packing nut..

I do that everytime I clean my gun, a little vaseline on the needle where it meets the packing nut.

As far as old guns go, I know a painter at a body shop that still to this day sprays with a binks 7.
He has some nice expensive HVLP's hanging on the booth wall but doesn't like them.
They're just there for the environmental inspectors.
He makes huge clouds with that binks, but he also gets a great finish.
Those guns may waste material but they do spray great.
 
Yea, I do it almost every time with a new gun, so no doubt it's super important with something old sitting up.
I'm still highly pissed that my old highly polished binks gun from the 80's mysteriously disappeared about 10 years ago. By no means an efficient gun, but it did the job at a cabinet shop & at home just fine.
The polished exterior made it spray better, right.:rolleyes:
 
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