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| | | | Joined: Mar 2003 Posts: 1,132 Shop Shark | | Shop Shark Joined: Mar 2003 Posts: 1,132 | This is more of a woodworking question but it pertains to the plywood rear floor in my 49 sub. I am trying to spray some epoxy varnish on the top side of the floor and I am getting what looks like very small fisheyes in the varnish. This didn't happen on the first coat. I had it thinned down a lot so it would sink in which it did. Now the second coat has these little bitty craters in it. I am starting to sand the second coat so it can be leveled out but before I respray it I need some help. Any suggestions out there?
Weeds | | | | | Joined: Oct 2005 Posts: 69 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2005 Posts: 69 | Weeds, Wood isn’t like metal it breaths, you need to build up slowly, very thin coats. 6 or 7 coats, it will probably take 2 or 3 coats to really seal plywood, thin about 10 to 15%
New deal for old steel
| | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | Weeds,
Are those things you describe as 'fish eyes' actually small bubbles. If the first coat is trying to flash off, or dry, and a second coat is applied on top of it, it will create tiny bubbles as the vapors migrate up through the fresh coat.
I think if the first coat is dry enough to sand, when you apply another coat the finish should be fine. On small items, you can run a propane torch over the finish and the bubbles will pop and level.
If these are actually fish eyes, which are usually a ...well, a thing that looks like a eye on a fish!!..maybe something has contaminated your gun. They make fish eye remover..'Smoothie', which eliminates this problem and lets the finish flow like glass. I don't know if it is compatible with your finish, but you might investigate. Good luck.
Stuart | | | | | Joined: Mar 2003 Posts: 1,132 Shop Shark | | Shop Shark Joined: Mar 2003 Posts: 1,132 | Stuart and Barney, Thanks for the advice. I'm still sanding and will try more thin coats instead of heavy ones.
Weeds | | | | | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | Varnish also looks a lot better when you rub it with 4/0 steel wool inbetween coats. It tends to be gummy and have little zits on the top. A bit of elbow work makes it look much better.
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A lone amateur built the Ark. A large group of professionals built the Titanic. | | | | | Joined: Oct 2003 Posts: 297 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2003 Posts: 297 | i echo what 4onthefloor said about the steel wool. use as fine as you can get between coats and you will be amazed at the shine you will get. it may look a little cloudy untill you spray it but then it will glow!
54 3100 w/62 235 "Yosemite Sam"
Born a Jay Hawk, raised an Okie and resurrected in Texas!http://community.webshots.com/user/djed50
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