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Rust in ultrasonic

I have rust in the corners of my eumax heated ultrasonic. I have
sanded it out several times but it always comes back. Any
suggestions on getting rid of this rust permanently? Can I get a
shock because the metal in the corners is getting thin?

Sara Rydberg

Once I had an ultrasonic that got rusty… Because was too close to
my pickle pot. If Thad the case move it somewhere els. I took it
apart cleaned the rust with rust removing gel from home depot then
send the painted surface lightly and spray painted it with Rustolium

Hope this helps!

Rubber in a can - it is impermeable to the cleansers one may add to
the distilled water.Once the surface is well prepared and dried the
sealant will provide at least a 10 year seal against damage.I may
even consider once you have sanded all the rust out ( check with
magnification) and dried it completely, apply a coat of something
like rust-o-leum inhibitor ( a paint on product to further prevent
the reappearance of rust under the sealant). The "rubber-in-a-can"
comes in white or black only that I know of, but i have used it to
waterproof a few things, repair some roof flashing and even a raft’s
wall with no problems afterwards in over three years after using
it…I’m sure there are some people in the forum’s membership that
will have a problem with the ozone damage potential to the
atmosphere, but what is worse, a quick spray of sealant or a metal
object in a landfill somewhere? I go for the rubber in a can and
continued use of your not so cheap to replace ultrasonic.

NOTE: after re-reading your post i do wonder how “thinned” the metal
is in the corners of your unit? Yes you probably could get a shock if
it’s actually eaten through the wall in which case time to
replace…but if it’s slightly thinned- and i mean slightly, not a
noticeably different wall thickness- then the rubber will work
well.You may have ground it down too far, or used too much cleanser
in the unit for too many years which is another story and warrants
replacement.Why not take a contour gauge and measure the difference
in walls on each side and make your decision based on what it
visibly shows you…Grinding it yourself would have voided the
machine’s warranty if it’s fairly new- so sending it back to the
vendor or manufacturer would be a waste of time.However if it’s
fairly new ( a year or 18 mos.) and you solely used a cleaning
additive as directed in the unit with the specified water in the
proportions directed and rust happened that soon, and you only had
precious metals in the ultrasonic then I would perhaps contact the
manufacturer…there’s a fine line since you took it upon yourself to
try and repair it and in your post did not specify the age of the
unit…a contour gauge seems a good starting place to measure the
amount of depth you have removed…if you used sandpaper in hand, or a
flexshaft with a bur or other electrified grinding tool that too
would contribute to the final disposition of voided warranty,
defective seams or welding at the factory, or overuse of a chemical
or some other incorrect additive or metal that went into the
ultrasonic…then it comes down to you or them…and who makes the
final call…rer