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This morning I was rummaging through my brushes looking for one with enough body to handle Costal's FSC-88 WB primer. This is pretty thick stuff. My eye spied some old toothbrushes that I had brought from home. They are the answer to HDU with lots of little nooks and crannies. You can really scrub the primer in and they make quick work of removing the excess from deep groves etc. I know it is just a little thing - but it sure saved me some time and frustration!
-------------------- “Did you ever stop to think, and forget to start again?” -Winnie the Pooh & A.A. Milne
Kelly Thorson Kel-T-Grafix 801 Main St. Holdfast, SK S0G 2H0 ktg@sasktel.net Posts: 5496 | From: Penzance, Saskatchewan | Registered: May 2002
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posted
I have discovered that a rubber grout float works well. It is a rectangle about 4x8 inches, with a wooden handle, and a rubber pad on the rectangle part. It's used for spreading grout on tile, but makes an easy job out of spreading that 88 stuff over large areas.
-------------------- Jeff Ogden 8727 NE 68 Terr. Gainesville FL, 32609 Posts: 2138 | From: 8827 NE 68 Terr Gainesville Fl 32609 | Registered: Aug 2002
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posted
A vinyl squeegee works too. But my favorite method, after 3 years of trying various methods is to NOT prime at all. Sand smooth with 220 grit, wash off dust, apply high tack rubber, blast. You will get the most even blast possible with NO paint on the board. Paint will not blast off evenly no matter how smooth you apply it.
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Has anyone ever used something other than the 88 stuff for priming HDU? Last one I did I just slapped on 3 coats of standard oil-based primer instead - have I committed a regrettable error?
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Pete, nope. Any paint or stain adheres well to HDU. The reason people use the 88 stuff or J. Cooks is because its a high solids primer (lots & lots of pigment). It builds fast so 3 to 4 coats fills up all the little craters in the HDU to give you a very smooth finish. Oil or standard latex won't build as fast, that's all.
posted
Here is a better way to get paint down in the holes.
Fill a spray bottle with tap water and after you roll on the paint, mist the water on. It will thin the paint enough so that it fills in the holes. Very easy. We learned this technique when painting "styrofoam" ( white polystyreene) (beadboard), which will drive you nuts trying to dab paint in the holes. So we spray while we brush or roll the paint on and it works!
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