Any tricks for using an oil based polyurethane on very porous wood like balsa?

I’m trying to seal a little name plaque carved out of balsa wood with some polyurethane. However, I’m finding that the polyurethane is just absorbing into the wood. After three coats, the plaque still looks like I’ve never applied any coats of polyurethane to it. I was wondering if I’ll ever get that shiny luster like when I use the sealant for hard woods with more coats or if I’m just fighting an uphill battle here. Also, feel free to share any tricks for the oil-based polyurethane application–I’m open to try anything.


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    One Response to “Any tricks for using an oil based polyurethane on very porous wood like balsa?”

    • deadbreed1212:

      I like to use oil. depending on color. boiled linseed oil will give a dark shiny luster. lemon oil is nice but light in color try a teak or tongue oil. Grizzly sell stuff called qualalaque or something. real shiny and hard. when you are done with the color you can use minwax polycrylic it is the only varnish that doesn’t yellow stays clear.
      good luck

      p.s. boiled linseed oil can be aded to oil based enamels and laquers for added shine.

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