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January 4, 2009
I just bought a can of Kilz because of your advice. The #2 pine I used for the stand does have some knots that it will probably help cover up. Plus I think of coat of primer will help me find any spots that I missed with wood filler or didn't sand well.
Your suggestion about using polyurethane is also a good one. But I want to paint it because I already have a workshop full of workbenches and machine stands that are either unfinished or clear-coated wood.
BTW, if I had the time and better artistic abilities I'd give it a steampunk look. I bet it would draw a lots of attention both on the Internet and at model engineering shows.
My job and a new grandkid have been getting in the way but I'm still making steady progress. I should have something interesting to look at after another weekend or two. Give me a call if you would like to come over and see it.
February 16, 2011
Bare wood, I always prime. Use a good quality, name brand primer. For wood with knots, I like to use Kilz or some other mildew resist primer, because they are made to cover better, and help seal the knots. Remember to use the proper primer for whatever topcoat you want to use. I prefer oil based paints, because I think they last better.
I only recoat if it's going to be in a severe environment, like a boat deck or a trailer floor. Or, ocasionally if it didn't cover well on the first coat. I rarely sand between coats, just prefering to put the second one on within about 12 hours. I put three coats on an inflatable boat deck (plywood), and it held up to getting soaking wet with no delamination.
Why not polycoat the maple parts? Water based poylurethanes are great nowdays. Go on smooth, no mess, and very durable. Lets the wood show through, but keeps it protected. Once again, I'd go with a name brand. I did my kitchen cabinets with minwax, and they've held up for many years now.
January 4, 2009
I’m looking for some advice about painting the wooden parts of the CNC router I’m building. I’ll probably be demonstrating it at the Cabin Fever Expo and the CNC workshop next year so I want to get the best results I can with a reasonable amount of effort.
The stand and table bed are made from pine and the router frame is going to be made from maple. I know that surface preparation is important so I’ll be filling any defects with wood filler before carefully sanding it. I’ve been wondering, should I use sanding sealer or apply some kind of primer before I paint it? If so, what do you recommend?
I was going to use Rust-Oleum oil-based enamel that sells for about $9/quart. But would I get better results if I use one of the other brands of oil-based enamel that Home Depot sells for painting trim? I’m particularly intrigued by Glidden’s new trim and door paint. It’s an $18/quart oil-based “gel” enamel that’s not suppose to drip or leave brush marks.
I’m hoping that I won’t have to apply more than one coat of paint. But if I do, what grit sandpaper should I use to sand between coats?
Do you have any other suggestions for me?
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