Getting rid of an old finish is a total PITA job, IMHO.
My comment about a belt sander was to use it to "break" the finish so
that chemical strippers would have an easier job of getting the task
I was going to mention a 4", right angle, sander; I have spent a lot
of time with one equipped with 24 grit discs.
Does a great job of cleaning and shaping; however, using it is an
Just like a belt sander, it can totally destroy a surface, if you are
Learn to use it on scrap.
Since you are this far along, my suggestion is to keep that file handy
or buy a carbide paint scraper.
I had a similar problem when I wanted to strip a table top of a botched job
of Flecto Varathane. The mfgr wasn't very helpful ("Just sand it off", the
say). I used a propane tourch with a flame spreader to soften the finish,
then scraped it off with a gasket scraper (like a putty knife but
thicker/stiffer). A heat gun would work too, but I don't have one. You
have to be *very* careful and go slowly. Have a large wet towel handy in
case you get things too hot. Go slowly and don't over heat. Mine was a
fairly thick application and it came off in one layer.
To remove black stains on wood due to water exposure, try oxalic acid.
You can get this as deck brightener. Just look at the ingredients to be
sure. Assuming the black stains are not due to mold, they are due to the
reaction between the tannins in the wood and iron. Oxalic acid destroys the
complex so the black disappears.
As for the finish strippers not working perfectly the first time, you
have to keep at it. The bubbling suggests that they are working. No one
ever said, expect perhaps for the stripper salespeople, that stripping a
finish is easy and quick.
W/ a 60 grit I had I used the angle grinder in parallel back forth passes
(about 16"), once confident I could go back and do another fill-in random
board pass on the spots I missed. I haven't got to the final 1/3 sheet
sander yet but there may be an issue of having a 468 sided board, but its
definitely fastest/easiest to get it off, the AG is the way to go. After
the AG the $5 Richard paint scraper is great for the little bits. Its best
to get a leg on top of the board to hold it down while dragging the scraper.
Creates a lot of shavings when sharp, critical. I saw a carbide (1) tipped
scraper at Home Depot for $25. Dremel sanding cylinder great for the
umbrella holes. Yet to find oxalic acid or to Cl.
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.