Abrasive wet or dry sanding sheets for removal of small amounts of material from surfaces to make them smoother and ready for additional.
These sanding sheets can be used dry or with water and offer a wide variety of coarse or fine grades for rapid or detailed removal of material such as old paint, varnish, primer and final coats of gloss paint.
This sand paper can be used by hand or by light sanding equipment such as a palm sander.
For best result on projects it maybe wise to consider using different grades of wet or dry sandpaper as the project progresses. For example, if re-varnishing wooden rubbing strakes on a Freeman you may decide to use a coarse grade to begin with, followed by a finer grade before applying the varnish.
Wet or dry sanding sheets have different grades depending on the coarseness of the sheet. Each grade can be categorised into either a 'Macrogrit' or 'Microgrit' and are labelled with a ISO Grit Designation 'P' number to establish the average particle diameter used for the particular sanding sheet. (For example a P60 sanding sheet falls into the 'Macrogrit' category because of its large average particle diameter i.e. it is quite coarse).
|ISO Grit Designation||P60||P80||P100||P120||P180|
|Average Particle Diameter (µm)||269||201||162||125||82|
|ISO Grit Designation||P240||P400||P600||P800||P1000||P1200|
|Average Particle Diameter (µm)||58.5||35.0||25.8||21.8||18.3||15.3|