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Fuji MiniMite 4 platinum HVLP system finishing questions...

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Forum topic by DManderson posted 03-20-2017 02:31 PM 297 views 0 times favorited 1 reply Add to Favorites Watch
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DManderson

1 post in 271 days


03-20-2017 02:31 PM

Topic tags/keywords: hvlp fuji fujispray fuji minimite 4 fuji minimite 4 platinum t75g finishing finish work urethane polyurethane varnish lacquer maple plywood ply maple plywood

Recently purchased the Minimite 4 platinum HVLP system with the T75G gravity feed gun. I’m spraying full sheets of maple plywood. Zinsser quick 15 came highly recommended because of its fast dry time and its “ability to re-coat within 3 hours without sanding”... After experimenting with fan size (pretty much wide open, since I’m spraying full sheets), material output and air pressure on a couple of scrap s, I was able to get a seemingly decent seal coat. However, after waiting an hour and a half, my second coat orange peeled on me pretty badly. I wouldn’t even consider re-coating like that with any of the other polys/urethanes im used to (This is my first spray system and unfortunately i have no experience with lacquer) I’m going to give this coat 4-5 hours to dry, sand and try again.

Question #1: Does anyone have experience spraying Zinsser Quick 15 through an HVLP system, and if so how do you have your setup dialed in (air pressure, material output etc)?

Question #2: What other Finishes would anyone recommend with a quick dry/re-coat time, and again how would you adjust the material output and air pressure to accommodate the finish?

Thanks!


1 reply so far

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Rich

1984 posts in 428 days


#1 posted 03-20-2017 06:12 PM

Regarding #2, lacquer is really easy to spray. No sagging, and is dry to the touch within minutes, and ready to re-coat. I thin brushing lacquer with lacquer thinner and acetone (50% lacquer, 25% thinner, 25% acetone).

As for adjusting the system, read the tips that come with the Fuji and practice on cardboard or something that lets you see your pattern. I have the old Fuji Q4 and the guns back then were adjusted differently for flow and fan width, etc, so I can’t offer any tips for your gun.

-- No matter how much you push the envelope, it'll still be stationery.

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