A 100 150 grit sandpaper or also known as a medium grit sandpaper is the most common one to be used as a starting point in any types of projects.
What grit sandpaper to prep cabinets for painting.
If your surface is an intricate design you are better advised to use medium course grade to protect the carved design beneath the paint.
120 grit is a common type of sandpaper used for such jobs.
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If you are using a belt sander in sanding the edge of a sticking door then a coarse sandpaper is needed by you.
A 40 80 grit sandpaper is the one that is used when you are sanding or removing stock quickly.
Once you have completed smoothing the surface you can paint it to further reduce any evidence that a repair was made.
The different grits of sandpaper.
For drywall we recommend starting with a 120 or 150 grit sandpaper before finishing up with 180 and 220 before painting walls.
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When applying a varnish sanding each undercoat with 220 or 320 grit.
Wet sanding the final coat with 600 grit paper produces a glass smooth surface you can buff up with polishing compound or wax.
Drywall compound is quite soft and when using coarser grit paper such as 80 and 100 you may end up leaving blemishes which will cause you more time effort.
Medium coarse sandpaper is graded between p80 and p180 on the grit level and offers a good level of paint removal which is less likely to destroy the underlying surface.
Painted cabinets should get a thorough sanding with 120 grit paper but no matter the finish do a final pass with 220 grit.
Each time you advance to a higher grit size you eliminate the scratch marks from previous sanding.
Many woodworkers find they only need to go down to 100 to 120 grit paper with their random orbital sander for surfaces that will be painted or receive a clear finish.
Once it has dried you can then use a fine grit of sandpaper to smooth out the surface.
Use a sanding sponge to dig into any tough areas that need special attention or corners that are hard to get with your sander.
You need to choose the sandpaper grit size according to the material you re preparing to prime.