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Minggu, 08 Juli 2007

Painting : How to paint Boat - General

When selecting a paint, also get the primer and thinner made by or specified by the paint manufacturer. Improper combinations can mean disaster.

When painting, protect mounted hardware by coating it with petroleum jelly.
Peel masking tape off ASAP after painting; the longer it stays on the harder it is to get off.
To remove paint/varnish spilled on gelcoat, or a painted-on boat name, use Easy-Off oven cleaner (fume-free cold oven formula). Spray on and let set for a few minutes. For long-dry paint, may require several applications.

Good paint stripper: Xtra Strength CitrusStrip (try Home Depot). Use very stiff nylon brush.
Solvent/cleaner: sometimes can use white vinegar or denatured alcohol, which are safer than acetone.

Solvents: don't apply with printed paper towels (use plain) or rags with fabric softener or dyes; surface will be contaminated. Use white lint-free cotton (bed sheets).

Roll-and-tip: painting technique where you use a roller to roll on a thin layer of paint, then follow up immediately with the tip of an unloaded brush to lightly smooth the surface and eliminate any bubbles. Best done by two people, always keeping a wet edge, working fast.Practice on scrap or a dinghy or the transom before doing the hull.Practice on primer coats and under coats, too.

Keep a record in the log of what type of paint you used for each job. Write it down before opening the can and getting paint all over the label. Logging the info will help you get the same good paint again later, avoid the same bad paint later, match colors, cover with compatible paint later, know what stripper to use later, etc.

Paint or varnish in cool, damp weather instead of the recommended warm, dry weather. Coolness gives the paint more time to "lay down" (spread evenly), and gives you more time to correct problems. Dampness keeps down dust and bugs. But if you're covering porous wood and the temperature rises, you can get bubbling.

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