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General Category => General Scroll Saw Talk => Topic started by: Marcellarius on February 24, 2012, 02:32:02 am

Title: lacker problems on ocoume ply
Post by: Marcellarius on February 24, 2012, 02:32:02 am

Hey you all,

I have made a lonesome scout saw and made the handles out of a hardwood plywood.
think it's called ocoume ply or so.
I  have problems with the lacker on the ply.  there keep coming little holes in the lacker. even after 7 layers.
I do sand (400grid) a little between the layers.
the other part/piece is made of Baltic Birch and have no problem there.

when I spray the lacker it's making a nice smooths shiny surface on the wood.
And then, in a minute or so there will be starting to come little spots in it.
looks like little holes were the lacker is sucked in.
but I guess it's due to air that's getting out. don't know what to do with it.

I didn't used oil before the lacker, just sprayed it right on.

Help!!!

Title: Re: lacker problems on ocoume ply
Post by: Mainewoods on February 24, 2012, 07:17:13 am

Marcel, check out this little article about lacquer finish, it might help!

http://www.woodfinishsupply.com/LacTroubleShoot.htm

Glen

Title: Re: lacker problems on ocoume ply
Post by: Russ C on February 24, 2012, 08:08:39 am

Sounds like you have Fish-Eyes or Cratering. Some kind of contamination/reaction and it might be coming from the plywood. I just looked at the link Glen posted and it has some great information and suggestions.  8)

Title: Re: lacker problems on ocoume ply
Post by: dgman on February 24, 2012, 10:00:23 am

Fish eye is the first thing I thought of too. There is some kind of contaminate on the plywood. This is why I always recommend you don't use silicone on any woodworking tools as this is what will happen.
You will have to sand the lacquer off. Apply a coat of shellac to seal the plywood. After dry, you can apply your topcoat. Good luck!