in non wet environments it will hold up for years as long as its not on a floor. never use water based poly in a wet envitronment.
How you can best clean up spilled polyurethane will depend on where it is spilled. If it is spilled on a laminate floor, rags dampened in mineral spirits will work well. If the spill is on concrete, paint thinner will clean it up.
Industrial casters are very strong polyurethane wheels that can hold hold up alot of weight! Usually the more costly they are the more weight they hold. They should roll very smoothly and not rough!
Polyurethane will give a long lasting easy to apply finish. Use a water based polyurethane ans clean up will be much easier. You should get years of wear from a good polyurethane finish.
Yes, it works well with that.
They'll hold up well, and can be easily sewn if required.
I would use an exterior polyurethane. It is going to hold up better and be more flexible than a varnish. Polyurethane has taken over the varnish market--it's hard to find any other kind. There is a "spar polyurethane," which is what you should use on the item in question.
Polyurethane can be recycled.
Polyurethane is definitely not recommended to inhale. This substance should always be used in a well ventilated room and should never be directly inhaled.
yes
No
Yes, both oil and water-based polyurethanes will adhere well to an item coated with acrylic paint. If it is a polyurethane paint, dull the surface prior to painting. If it is a clear. realize that that oil based polyurethane will impart an amber hue while a water based polyurethane is crystal clear and will not affect the color.
hypoallergenic polyurethane foam