P400 sandpaper only oil finishes like tung oil teak oil require the surface to be finished to this level.
What grit sandpaper to use on painted cabinets.
100 to 150 grit sandpaper.
Medium grade sandpaper will take the next level of paint and reduce it further by sanding the final layers away.
120 grit is a common type of sandpaper used for such jobs.
When painting wood with latex or oil based paint scuffing with sandpaper finer than 220 grit is likely to gum up the paper and will have little effect on the final appearance.
When applying a varnish sanding each undercoat with 220 or 320 grit.
Painted cabinets should get a thorough sanding with 120 grit paper but no matter the finish do a final pass with 220 grit.
In most cases a light scuff with 150 grit paper removes all surface defects without producing noticeable scratching.
180 to 220 grit sandpaper.
Check on wood filler repairs and sand those areas to match.
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Also wet sanding will generally use 320 as this practice requires a very fine grit as well.
Medium grit sandpaper makes a good starting point for most projects from sanding unfinished wood to removing old varnish.
Once you have completed smoothing the surface you can paint it to further reduce any evidence that a repair was made.
On a board just milled to thickness with a well tuned planer you can usually start sanding with 150 grit.
Finer grit sandpaper is great for removing the scratches left by coarser grits on unfinished wood and for lightly sanding between coats of paint.
Macro grits are a class of abrasives that range from medium to coarse sandpaper calibers.
Macro grit sized sandpapers are commonly used on tougher wood and metals and have a stronger clearance.
If you bought a presurfaced board you might have to start with 120 grit to remove incidental scratches that were on the board when you got it.
Use a sanding sponge to dig into any tough areas that need special attention or corners that are hard to get with your sander.
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They feature mid to low grit numbers.
This has a higher grit grading of between p180 and p500 and will not be as effective at removing the majority of a painted surface.
Wet sanding the final coat with 600 grit paper produces a glass smooth surface you can buff up with polishing compound or wax.
However this grade will be more useful assuming you ve eliminated most of the paint.