There's been a old unisaw sitting in my garage which I decided to rehab. It
had 1/16" layer of rust and I lost my patience and took a sander to it. I
think it worked out OK, but in uncovered these spots that had been covered
by especially thick rust. They actually protrude above the surface and they
appear to be as hard as the rest of the cast iron.
Can someone suggest on how they could be removed?
Thank you in advance.
On 7/23/2015 10:58 PM, firstname.lastname@example.org wrote:
Used to be, hardware stores sold jelly rust remover.
Don't remember the brand, but it was sold.
Another poster here mentioned concentrated hydrochloric
acid for rust removal. I was skeptical, and tried the
acid on a rusty pair of fence pliers I found in outdoor
mud. It took some doing, but now the pliers operate
And there is the obvious, might be article on the world
wide web, about rust removal. Have you tried a web
search? Amazing, what can be found out there.
On Friday, July 24, 2015 at 7:48:00 AM UTC-4, Stormin Mormon wrote:
. I think it worked out OK, but in uncovered these spots that had been cove
red by especially thick rust. They actually protrude above the surface and
they appear to be as hard as the rest of the cast iron.
think wire brush on a electric drill. i rehabed my grandpas old table saw
this way many years ago
On Friday, July 24, 2015 at 8:11:26 AM UTC-4, bob haller wrote:
it. I think it worked out OK, but in uncovered these spots that had been co
vered by especially thick rust. They actually protrude above the surface an
d they appear to be as hard as the rest of the cast iron.
Thanks for the suggestions, however, I don't believe that those spots are r
ust. It field like cast iron itself or solder. It is very hard, not soft or
brittle in any way.
Hard to tell from your photo but it looks like it might be iron scale. When
iron/steel rusts badly it expands and forms scale. Itt can be popped off
which is why sailors used to use chipping hammers on steel hulls. Of
course, removing it leaves a (minor, usually) depression.
Rust/scale can be removed physically or chemically. Any acid will remove
rust. It wil also attack non-rusted iron/steel; here is an alternative that
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