finishing

solvnets

Using Solvents to Date Furniture

Editors note: Bob Flexner’s blog will move to the Flexner on Finishing Blog at the end of April. You can find it here. A few years ago I was called to a long-time client’s house to look at a problem on their newly purchased eighteenth-century Chippendale dining set. I was excited. How often do I...

Try cleaning first, with water, soap and water or mineral spirits.

Rejuvenating Old Finishes

Editors note: Bob Flexner’s blog will move to the Flexner on Finishing Blog at the end of April. You can find it here. Just because a finish is old and deteriorated, you don’t necessarily have to strip it and apply a new finish. You may be able to rejuvenate the finish so it looks...

scratch disappears under UV light

Smart Coatings

It seems like everything is becoming smart these days: smart phones, smart watches, smart cars, smart drugs. There are even smart coatings (paints and finishes). I’ve blogged about one already, a coating that uses nanotechnology to create an air barrier that causes liquids such as pee to bounce off walls and cover the perpetrator’s...

Now, all one company

Troubling Consolidations

As in so many other industries, the companies who supply us with paints and finishes are consolidating at a rapid rate. When I started in this field 40 years ago, there were all sorts of local and regional suppliers. Every store carried its own unique brands. Minwax was a very small player. It was...

Filled mahogany grain on the right

A Few Thoughts

I just finished reading an article on filling pores, and it reminded me of several things I’ve been meaning to say. First, filling pores is primarily a refinishing operation because so much of the old factory-made and finished furniture is mahogany with filled pores. To reproduce the original look, a refinisher has to fill...

You can thin all you want

You Can Add All the Thinner You Want

You often see cans of solvent finishes, including lacquer, and alkyd and polyurethane varnish, with instructions not to thin them. Manufacturers include these instructions in order to comply with VOC laws in some areas of the country, such as California. Adding thinner could take the finish out of compliance with the local or state...

To remove the residue NMP wipe several times with an alcohol dampened cloth

Remove Residue NMP From The Wood

The paint-and-varnish removers commonly available in stores are gradually shifting from those available in metal cans to those available in plastic containers. The ones in plastic aren’t as strong or fast acting as those in cans, which are methylene chloride and various lacquer-thinner solvents. Just the packaging, plastic vs. metal, tells you this. The...

1_Lay down some finish in the middle of an intended stroke

Brush End-to-End

When brushing a large surface such as a tabletop, you want each brush stroke to go from one end to the other with the grain. If the brush can’t hold enough finish to go the entire distance, brush several partial strokes, then connect them with a long end-to-end stroke. Lay the bristles down just...

Second story oak floor wet mopped for many years

Water Warps Wood Opposite from What You May Think

Water causes wood to swell, so most people think that wetting one side and not the other will cause the wetted side to bow – that is, increase in width so the center is higher than the edges. If the wood is thin enough, this will be the case initially. But the overall swelling...