Aluminum oxide (AO) papers will typically last longer since the grit does
not break down as fast as does Garnet. The AO will leave evenly distributed
striations and you must use the next finer grit to get rid of the striations
left by the coarser grit.
As for Garnet paper, it too has its place right next to the AO papers. I use
the Garnet papers whenever I have to sand by hand (rolled up, palmed,
sanding block, strips, etc.). Garnet breaks down (wears out) faster than AO
papers but that is exactly the reason for using a Garnet paper. The more
its used, the finer the grit becomes (duller edges) and the finer the
striations become. Some say it wears out to fast - I say it's just
So for fast removal AO, for finer detail sanding use Garnet.
Now the experts can give you some additional info to help you decide on what
to use and when.
The adhesive on much of the garnet paper smells suspiciously like hide glue
when you attempt to power sand with it. Can't convince a HSchooler to read
(or perhaps they can't) the package, which says "not for use in powered
Fish glue I thought ? Isn't it more flexible than hide ?
The only one I'd advise against for wood is silicon carbide (often
black "wet and dry") and that's just because of the price. It has the
advantage of good wear resistance, but you just don't need that on
wood. Save it for synthetic fillers and paintwork.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.