120 is 120% of 100.
100*12/120 = 10%100*12/120 = 10%100*12/120 = 10%100*12/120 = 10%
120% of 100 = 120
100+120=220.
The percentage reduction = (120 - 90) x 100 / 120 = 30 x 100/120 = 25%
120 or 100 grit 80 if it is high
You would not use sandpaper. You would use a screen. The sanding screens usually come in an 80, 120, and 220 grit.
You have to start out with a rough grit and work your way down to a fine grade.If it's necessary you start with an 80 grit sandpaper.Then you go over it again with a 120 or 180.If you want it even smoother you go to a 220.You'll need more of the finer grits as they're more easily worn down.
220 3m its a finer sand paper you can take the paint as low as you want with it it works great. You should always prime over a 220 grit scratch. It is the perfect size grit. If you are sanding primer so you can apply topcoat, finish with 400grit dry on a machine (DA) or 500 wet sand for a solid color enamel. Basecoat products, particularly metallics and pearls, need to be applied over a substrate that has been wet sanded with 600 grit.
terms used mostly on sand paper, emery cloth, or other fine abrasive materialYou should always know the type of wood you are finishing before starting any sanding. The type of wood you are sanding has a direct relationship to the grit used for final sanding. There are two basic types of wood - softwoods and hardwoods.Typical softwoods are Pine and Fir. Softwoods can be finish sanded with 150 or 180 grit prior to the application of primer. Please see Grit Guide for more information:Grit GuideVery Fine (220) For light sanding between stain and sealer. Fine (150-180) For final sanding or cleaning of wood surfaces. Medium (100-120) For moderate removal of surface imperfections. Course (60-80) For heavy removal of wood and coatings. * http://www.nortonconsumer.com/Data/Element/Node/Application/Application_edit.asp?ele_ch_id=A0000000000000001555"What are the grit sizes equivalent to?" United Kingdom:-UF Ultra Fine:- approximately equivalent 420 Grit sandpaper.F Fine:- approximately equivalent 320 Grit sandpaper.M Medium:- approximately equivalent 220 Grit sandpaper.C Coarse:- approximately equivalent 180 Grit sandpaper.XC Extra Coarse:- approximately equivalent 120 Grit sandpaper.XXC Extra, Extra Coarse:- approximately equivalent 80 Grit sandpaper USA:-UF Ultra Fine:- approximately equivalent 140 Grit sandpaper.F Fine:- approximately equivalent 120 Grit sandpaper.M Medium:- approximately equivalent 100 Grit sandpaper.C Coarse:- approximately equivalent 60 Grit sandpaper.XC Extra Coarse:- approximately equivalent 46 Grit sandpaper.XXC Extra, Extra Coarse:- approximately equivalent 24 Grit sandpaper * http://www.permagrit.com/faq.php
Sandpaper currently is available in six different grit sizes. Every grit size is used for a different project. The sizes are 40-60, 80-120, 150-180, 220-240,280-320, and 360-600.
If you have your old blade, you can sharpen it easily. Place 120-160 grit wet sand paper on a piece of flat glass.Wet the sandpaper and gently rub the blade falt on the sandpaper in circular motions.
If the furniture is painted then you would need approx a 60-80 grit sandpaper, then gradually move to a finer paper. When paint is almost gone finish with about a 320 or 400 grit paper so it is completely smooth. If you want to repaint then you don't need to remove all the paint unless you are painting over an enamel paint with a latex. (oil based vs. water based). You can however prime it with a good primer once the wood is smoothed. Or if you remove all paint you can then stain it. before you paint/stain your wood be sure and remove all dust from the wood with a clean damp cloth. let wood dry and then proceed. good luck and wear a dust mask :-)
It's the coarseness of an abrasive. It's measured with a screen that has a certain nunber of holes per inch--120-grit abrasive is that which falls through a screen with a 120 x 120 grid of holes per square inch.
Yes , but it would be wise to clean the old paint first,give it a quick sanding with a fine sandpaper, 120 grit or so, then wipe off the dust, you should have no problems.
Most factory aluminum rims are coated with a clear coat. To polish them you have to sand off the clear coat. You can start off with a fairly rough grit...80, 120 or so. Then start using a finer grit in steps. 240, 400, 600, 800, 1200, etc. Then follow with a good polishing compound. They'll look like chrome if you do it correctly.
120 is 120% of 100.