The table has been coated with three layers of polyurethane.
no dont be stupid
Yes
Yes, epoxy can be applied over a surface that has been previously coated with water-based polyurethane. However, it is important to properly prepare the surface by sanding it lightly and cleaning it thoroughly before applying the epoxy to ensure proper adhesion.
No, it is not recommended to apply water-based polyurethane over a surface that has been previously coated with oil-based polyurethane. The two types of polyurethane do not adhere well to each other, which can lead to issues with the finish. It is best to stick with the same type of polyurethane for recoating.
Yes, you can apply polyurethane over epoxy as long as the epoxy has fully cured and been properly prepared for the polyurethane application.
No, it is not recommended to apply water-based polyurethane over a surface that has been previously coated with oil-based polyurethane. The two types of polyurethane do not adhere well to each other, which can lead to issues with the finish. It is best to sand down the surface and remove the oil-based polyurethane before applying the water-based polyurethane.
There is no evidence of a ball been made from polyurethane. There are polyurethane foam balls, but unfortunately no tennis balls. The process is likely to be the same as a normal tennis ball, the only difference being that the rubber in the ball is replaced by polyurethane.
It is polyurethane that has been expanded with air when liquid, and formed into sheets, often 2-3 inches thick.
Slightly abrade the varnished surface with sandpaper. Apply a gel type stain with a brush then soften brush marks with a dry brush. Top with two coats polyurethane varnish. Or strip old finish and start from scratch.
what kind of paint?? How long has the original paint been on there? Many times, the "vehicle" (solvent) in the polyurethane will cause the existing paint to curdle or wrinkle if it is a water based/latex paint. If it has been on there a long time though, you might be able to get away with it. See if you can test a small spot that is not exposed or visible first. Even if it "tests" OK, it still might have a tendency to pull the existing paint up when you get it on a large area, so be careful
Not sure
If your hardwood floor is not shining, it might need some polish. Or, it might just be old. I suggest investing in a new hardwood floor if yours is so ancient that it has lost its ability to be lucent. Or you can have your floors refinished. If they have been sanded recently, you might have a satin sheen in the polyurethane that was applied. If this is the case, all you have to do is re coat it with a semi gloss or gloss polyurethane.