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Epifanes clear varnish

2/6/22       
dr Member

I am spraying Epifanes clear high gloss varnish. Per they recommendations thinning should be:
First coat - 50%
2 25%
3 15%
4-7 0 to 5% with a 1.8 nozzle
I am using a 1.9 nozzle and the first and second coat is no problem. After that nothing is coming out of the gun. Does somebody have any clue on what's going on?
Thanks

2/7/22       #2: Epifanes clear varnish ...
Mastercabman

A little more info would be nice

What kind of equipment are you using?

2/7/22       #3: Epifanes clear varnish ...
RichC

The gun needs a good cleaning?

2/7/22       #4: Epifanes clear varnish ...
dr Member

I am using a HVLP and the gun is clean. The problem is the thinning, they are saying to spray the final coats 15 to 5 % reduced but this varnish is like a thick sirup. I used an unopened can maybe 4 years old and I think this could be the problem.

2/7/22       #5: Epifanes clear varnish ...
Mastercabman

HVLP?
Can you be more specific?
Turbine?
Pressure feed?
Gravity feed?
Air assisted airless?

2/7/22       #6: Epifanes clear varnish ...
dr Member

Gravity feed.

2/8/22       #7: Epifanes clear varnish ...
Mastercabman

If the finish is somewhat thick,that can be a problem with gravity feed
You could just thin like the first/second coat but put more final coats?
On another note,how cold is it where you are?
When finish materials gets cold,it gets thicker
So try to warm it up and see if that makes any difference

2/8/22       #8: Epifanes clear varnish ...
dr Member

Thanks Master, will try your suggestions.

2/9/22       #9: Epifanes clear varnish ...
Adam

I've done a ridiculous amount of varnishing on boats and sprayed a fair amount on exterior doors.

The directions from Epiphanes are a joke. There is no benefit to over thin any of the coats. The first coat is thinned 50% to make a sanding sealer. It raises the grain. You sand it off and apply every coat with as little reducer as possible.

Spraying varnish is like everything else. Pick the appropriate needle/nose size and thin the product to get it thru the gun. You should be able to get it thru a 1.7 with no problem. Something is wrong with your gun.

2/9/22       #10: Epifanes clear varnish ...
dr Member

Adam,
I agree with you about Epifanes directions. I have 2 new guns never used, a Devilbiss JGA pressure feed 1.4 conventional and an Accuspray #7 also pressure feed with no clue what this gun is for. Tomorrow I am going to try going conventional and hoping for the best. I am spraying everything teak for the interior of a sail yacht.

2/9/22       #11: Epifanes clear varnish ...
Adam

1.4-1.5 are for solvent based products which are reduced. wb likes 1.7 because it’s very hard to reduce them correctly, so you try to spray out of the can. It’s usually easier to move faster with the gun to make up for the extra material. You can spray the thickest primers thru 1.9.

I wouldn’t reduce anything more than 15%. At that point you are are not getting a lot of product down. It’s time to change tips & application methods(speed, coats, etc).

2/9/22       #12: Epifanes clear varnish ...
dr Member

Adam,
I am getting there, Devilbiss is doing the trick. Still reducing 25% but with a few more coats should be ok. Custom made sole with honeycomb and strips of teak. The amber varnish mess up the white caulking.


View higher quality, full size image (591 X 443)


View higher quality, full size image (591 X 443)

2/10/22       #13: Epifanes clear varnish ...
Adam

It doesn't suprise me that you are at 25% with a 1.4 tip. The varnish is pretty thick. Make sure you stir that really well or you may get solvent pop(areas of extra solvent that evaporate faster and leave craters).

2/10/22       #14: Epifanes clear varnish ...
John Member

I'm not surprised you can't spray it neat with a 1.8 mm N in a gravity feed gun. You need a pressure assisted gun to spray that snot. But I see no problem thinning it so you can use the gun you have; it will just take a few more coats.
John


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