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39 votes
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Do PC boards in AC units wear out?

Some electronic components do wear out, for example electrolytic capacitors have a rated lifetime which depends strongly on temperature. The hotter it is, the quicker it'll die. Same for power ...
bobflux's user avatar
  • 9,853
11 votes

What is causing this bathroom faucet corrosion, and how to prevent?

If you are using a cleaning product that contains ammonia, such as Windex, this can contribute to corrosion of brass. Ammonia aggressively attacks brass and creates stress fissures that promote ...
MTA's user avatar
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9 votes

How can I dry out and reseal this corroding railing to prevent further damage?

That's pretty far gone, basically that split is beyond economical repair. But since you asked: To drain it, it can be drilled from below the deck using a long drill bit, or a slot can be cut using a ...
Jasen's user avatar
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9 votes

Do PC boards in AC units wear out?

Keep in mind that even if you're far enough away to avoid getting salt spray, There will still be a lot of salt in the air and with high humidity, that salt will conduct. I see that in South Florida a ...
JACK's user avatar
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7 votes
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What nails to use for PT wood?

In general, the codes require fasteners to be of hot-dipped, zinc-coated galvanized steel in accordance with ASTM A153, type 304 or 316 stainless steel, silicon bronze or copper. [source] FWIW, ...
alfreema's user avatar
  • 699
7 votes

How can I dry out and reseal this corroding railing to prevent further damage?

The swollen steel at the split is from oxidation (rust). I agree with your plan to remove trapped water in the rail. The procedure calls for moderate DIY skills and some special tools. I'd initially ...
ojait's user avatar
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6 votes
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What is this black stuff that appeared on my drain after cleaning with a bleach-based cleaner and how do I clean it?

This may not be mold but the chrome plating having pin holes and the cleaners / moisture eating the base metals have created a new problem. I would try to dry the area and use a quality fingernail ...
Ed Beal's user avatar
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5 votes
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Anode for buried galvanized steel tube

The industrial way is both coating and cathodic protection ( sacrificial anodes/aluminum).The coating greatly reduces the amperage needed from the anodes. In your case it would be so easy and cheap to ...
blacksmith37's user avatar
  • 8,311
5 votes

Can Electrical Leak into Copper Pipes Cause Corroison?

I am much more concerned about whether you have a ground fault or not. If you have electricity actually "leaking" then you have a life safety problem that is far more important than long-...
manassehkatz-Moving 2 Codidact's user avatar
5 votes

Do PC boards in AC units wear out?

If one is allowed to make the PCB 5% or 10% more expensive, it could be overengineered to outlive the hardware (compressor, tubes, heat exchanger, fan, etc). It is not that hard - unless one is ...
fraxinus's user avatar
  • 3,149
4 votes

Are these blue spots on stove coil cups poisonous Verdigris?

Try a magnet - dollars to doughnuts, those are somewhat peeled and rusted chrome plated steel, and the blue is a normal steel oxidation color, and not toxic (also, were you planning to drip food down ...
Ecnerwal's user avatar
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4 votes

Will steel continue rusting if it's completely covered in concrete?

No.It will continue rusting and the volume of the corrosion products will crack the concrete. New unrusted rebar will rust ( in concrete) but at a lower rate than your "prerusted" sample. Best ...
blacksmith37's user avatar
  • 8,311
4 votes

Anode for buried galvanized steel tube

If it's not too late, I feel that a properly applied heavy duty corrosion resistant coating would be a more effective (and simpler) solution than cathodic protection. The movement of the unit during ...
Jimmy Fix-it's user avatar
4 votes

How can I dry out and reseal this corroding railing to prevent further damage?

That is a failed / defective ERW weld seam . So corrosion did not cause the problem it exposed it , corrosion is not severe. Drill a few holes in the bottom to drain any water. Replacing that section ...
blacksmith37's user avatar
  • 8,311
4 votes

Non-spray WD-40 equivalent?

Spray onto a cloth or rag and wipe on. Avoids any overspray if you prepare the cloth/rag away from that area.
Solar Mike's user avatar
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4 votes
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What corrosion protection for nails, screws and bolts?

Stainless Steel If you want the best in corrosion protection, pick a metal that is difficult to corrode. Stainless steel is not impossible to corrode (there are various grades of stainless), but it ...
Machavity's user avatar
  • 24.9k
4 votes

Whether and how to remove slag from stick welding crevices

So grind those holes out and re-weld. Getting a good fill comes with practice, I found that if I was "pushing" the arc into the molten bubble you get the "wave" effect and keep ...
Solar Mike's user avatar
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4 votes
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Is this corrosion in my electrical panel, and is it a safety issue?

That looks like good old aluminum oxide. Is aluminum oxide a problem? It can be but this looks like it is on uncoated edges, you can stop it from getting worse with a deox or noalox (oxide inhibitors)....
Ed Beal's user avatar
  • 103k
4 votes

Does copper mesh react with wood?

Copper won't react with wood normally, only maybe when it's permanently damp. But if you use filler, and cover it completely, water's not going to get in. If the mesh has small enough holes so the ...
Tim's user avatar
  • 5,308
4 votes

water tank drains water?

While it's not out of the question that "all is lost" with your current tank as the conclusion others leap to, it's really not the most likely situation. Temperature-Pressure Relief valves (...
Ecnerwal's user avatar
  • 218k
4 votes
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Used 1” galvanized connections on 16 ft of black iron gas pipe replacment

There's no problem mixing & matching plain steel pipe ("black iron"), and galvanized steel pipe. However, steel pipe of any description should not be placed in the ground or embedded in ...
kreemoweet's user avatar
  • 3,598
4 votes

What is this strange orange fluid corroding painted jack posts in basement?

What you see is most certainly rust. It is a concern because it is compromising a component that is giving major support to that beam above it. You should have consultations with a few contractors ...
RMDman's user avatar
  • 31k
4 votes
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What is this strange orange fluid corroding painted jack posts in basement?

The orange fluid is rusty water. The corrosion started inside the column and has finally eaten through to the column's visible side. Searching the internet for lally column oozing yields many ...
popham's user avatar
  • 10.4k
3 votes

What happened to my garbage disposal?

Looking at the image it appears that the housing is some type of cast metal. The white residue is typical of corroded aluminum. My guess looking at the line of white spots is that"s where the glass ...
mikes's user avatar
  • 11.4k
3 votes
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What happened to my garbage disposal?

a shot glass that fell into it while running It's pretty obvious the glass shattered and chunks were flung against the wall. Note how there's a line where the hole is. Since the bottom of shot ...
Machavity's user avatar
  • 24.9k
3 votes

What Solutions are Available for Marble Floor Etching / Corrosion

That's too deep to grind flat. It's somewhat of a "natural" look, so you could consider leaving it as-is unless the holes are big enough to be a hazard. In that case, I would look at just filling ...
fixer1234's user avatar
  • 6,118
3 votes
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Water heater inlet corrosion after 4 years? Installer claims they did everything right

My educated guess without being there is that the flex connector joint was not installed correctly or is just leaking. I never liked this type of installation since it was made for the novice and not ...
d.george's user avatar
  • 12.4k
3 votes

Are these blue spots on stove coil cups poisonous Verdigris?

Edit3: Bleach will react with copper to produce copper hydroxychloride and as wikipedia says, is commonly found in metal corrosion products. Iron (II) chloride is often greenish colored. Iron and ...
Ben Welborn's user avatar
  • 6,212
3 votes

What nails to use for PT wood?

Stainless is the most reliable way to go, though hot-dipped galvanized is also an option. It wasn't an issue until CCA was phased out a few years back.
isherwood's user avatar
  • 139k
3 votes

Painting over paint with rust spots coming through

NASA's Kennedy Space Center is located on the Florida coast, unlike the Soviet complex located on desert steppe. As such they have the most advanced anti-corrosion laboratory on earth. You've found ...
Harper - Reinstate Monica's user avatar

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