Application Method: Thinning: Mix Sanding Sealer SS-501 with
So, sanding sealer is 1/3 shellac with 2/3 denatured alcohol.
Regular readers will know that we do not recommend over-thinning the Cellulose Sanding Sealer; it's a common myth that it needs to be thinned 50/50 to work better, but as a general rule this is incorrect.
There are two ways to do this. I either buy pre-mixed shellac (Bullseye SealCoat), and dilute it from 2lb cut to 1lb cut. Or I simply but dry shellac flakes and mix my own using denatured alcohol. So its not a true sanding sealer by definition, but it accomplishes the same thing.
Interior Oil-Based Sanding Sealer will dry to touch in 2 to 3 hours and can be sanded after 3 hours or when sanding sealer is thoroughly dry. Using a cleaning solvent, such as paint thinner or mineral spirits, is recommended for cleanup.
Polyurethane and shellac sometimes gum up the sandpaper; sanding sealer does not. Some forms of sanding sealer are water-based, so clean-up can be done with mild soap and water. Any oil-based polyurethane or shellac must be cleaned with paint thinner or acetone.
Sand Down the Sealer: Once the sanding sealer has dried for at least an hour, sand it with a fine-grit (240 grit and up). Use the shop vacuum to remove the sanding sealer dust, followed by clean rags to clean up any remaining dirt. After cleaning off the dust, you can paint or clearcoat the surface.
We recommend no more than 1-2 coats, then finish with 1-2 coats of topcoat.
A sanding sealer is not the same as a wood conditioner. Whereas a wood conditioner is a pre-stain treatment that reduces blotchiness when staining, a sanding sealer is applied only to bare wood that is not going to be stained.
Lightly sand the surface with 220-280 grit sandpaper. A powder should develop when sanded. Do not over-sand to avoid removal of the sanding sealer or previous stain.
Using 2 coats of sanding sealer creates an even smoother finish. Sanding sealers fill and raise the wood grain, creating a rough, gritty feel.
Michael Dresdner: "Sanding sealer is never mandatory. It is an option that saves time and material in some situations, and is unnecessary in others. Some woods, like cedar, spruce, and poplar, are so porous that they tend to suck up the first few coats of sprayed lacquer as if nothing were applied.
The thin viscosity makes it easy to spread and allows it to penetrate into porous woods. To start apply 1 thin coat and allow it to dry. Lightly scuff sand to remove any raised grain fibers, then apply an additional 1 to 2 coats to seal wood and provide an excellent surface that will be ready to topcoat.
Ingestion May cause nausea, headache, dizziness and intoxication. Skin contact This product is rapidly absorbed through the skin and may cause symptoms similar to those of ingestion. Repeated exposure may cause skin dryness or cracking. Eye contact Causes serious eye damage.
Sanding sealer dries to the touch in 10-20 minutes. Example of use: • Apply 1 coat of Sanding Sealer: finish sand before applying topcoat. Apply 1 coat of Sanding Sealer; finish sand before applying paint.
Apply one single coat with a brush or cloth and wait for it to dry. Not very long, an hour or so in warm conditions. Apply a coat of wax, or you can give it a second application of sanding sealer and then wax it.
On bare wood, the first coat will dry to the touch in 5-10 minutes and can be sanded or recoated in 20-30 minutes. Subsequent coats or coats applied over existing finishes will dry to the touch in 10-15 minutes and can be sanded or recoated in 1 hour.
It's a good idea to do this fine sanding between coats anyway to remove dust nibs. But polyurethane doesn't bond so well over finishes marketed as sealers, especially over sanding sealer. This sealer is good for use under non-polyurethane varnishes because regular alkyd varnishes gum up sandpaper.
Thompson's WaterSeal | Oil-based | Exterior Stains.
Minwax® Professional Formula Sanding Sealer is a clear sealer formulated for application over bare wood. Its quick dry feature allows for sealing and topcoating your project in just one day. Minwax® Sanding Sealer 4.6 out of 5 stars. Read reviews for average rating value is 4.6 of 5.
Luckily, you can still apply an oil-based polyurethane over a water-based one. If you already laid down a water-based finish and decided to go for an oil-based one, do not fret. With a little bit of extra time and preparation, you can apply the oil-based finish right over the water-based one.