what the difference between this and the polycrylic??

I use both for different reasons. This oil base is more durable against wear and water rings than polycrylic for things like table tops and countertops. It is easier to get a smooth finish when brushing because it dries slower and flows out flatter. It WILL impart a warm, yellowish finish that is visible on lighter woods, and it will create a darker patina with age. It gives a warm, amber glow to medium or dark wood finishes. This quality may or may not be desirable. It usually only requires two coats. Use it for durability, a warm, aged patina, and ease of application towards a smooth finish. Polycrylic is not as durable and can show "elbow wear" on table tops after a few year. It will stay crystal clear on white woods, but can impart a milky sheen on darker woods. It dries fast, so you can sand between coats much quicker than oil. However, that can make it tricky to brush it on and get a smooth finish, especially if you brush back over it when it gets tacky. It requires minimum of 3 coats, 4 for long durability. on wearable surfaces Use it when you need a crystal clear finish on light colored woods, and fast drying between coats is desired.

Will it be very shine and smooth for the surface after I use? thanks

Yes. I recommend first using a 600 grit sandpaper to lightly remove old finish. Remove all dust with a damp cloth, and then lightly spray on first coat (Thin coat best). Wait 24 hours to dry. Next lightly sand using a 1500 grit sandpaper, remove all dust with a damp cloth, and then lightly spray on first coat (Thin coat best). Repeat this step two more times. Glass feel may require additional applications. Remember thin coats. PS: If you choose the brush method, do not use sponge brushes since it is more likely to leave bubbles, use a good quality sable hair brush. I did a bar top decades ago applying clear polyurethane with about 20 thin coats in the first year about once every other week and I left a penny at the end of the top and coated over it until it disappeared ant the bar top was so smooth. The top was red mahogany that is probably still a luster for the new owner. I could slide a bear from one end to the other end.

Can this be used on floors?

Yes, this oil based polyurethane fast drying is absolutely engineered for hardwood floor and definitely in high traffic areas. I used the water based polyurethane in the dining room and this is the hallways, this looks so good and is holding up better than expected.

ASIN	B0009XELPS
Best Sellers Rank	#193,787 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #268 in Varnishes
Color	Gloss
Color Code	FFFFFF
Colour	Gloss
Container Type	Aerosol Bottle
Customer Reviews	4.6 out of 5 stars 2,060 Reviews
Dry Time In Hours	4
Finish Type	Gloss
Finish type	Gloss
Full Cure Time	24 Hours
Included Components	Minwax Stain
Is Waterproof	False
Item Form	Aerosol
Item Volume	340.1 Milliliters
Item Weight	408 g
Item height	2.69 inches
Item volume	340.1 Milliliters
Paint Type	Oil
Size	11.5 Ounce (Pack of 1)
Special Features	Washable
Special features	Washable
Specific Uses For Product	Interior
Surface Recommendation	Wood
UPC	027426330504
Unit Count	11.5 Grams
Unit count	11.5 Grams
Water Resistance Level	Water Repellent

Minwax 33050000 Fast-Drying Polyurethane Aerosol, 11.5 ounce

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