Removing paint?

[diver35]

We use Stripping disks that go on a small grinder, they are a resin composite, and work very well for removing paint, especially if you don't know the type of paint it is. some chemicals are quite harsh and can stay on the substrate even after a thorough rinse, thus causing you problems down the road. these pads work good for both al. and steel. It also repreps them for a new paint job.

Such as the one attached here. One of my my tanks I dive with on a regular basis.
artwork done by jeffsiminoffstudios.com

 

[halocline]

Is there an easy way to tell if a painted steel tank is galvanized?

 

[KGNickl]

Is there an easy way to tell if a painted steel tank is galvanized?

Yes, under the paint is galvanized coating.

Not a great answer, but the truth.

Anyways, I ended up just giving the tanks to an LDS. I was going to have them hydro and all, but the tanks have 1/2" valves. In that case the tanks have little use to me in the future and little to no resale value. So the shop gets to throw them away, sell them, or sit them down as a history of scuba exhibit. Who knows..... Oh well can't win them all. Atleast I didn't lose any money on these (nor gain...).

 

[Couv]

There's going to be a lot of people crying over that.

 

[halocline]

I got my LP72 today, took off the boot, and found a set of six "bumps" around the bottom of the tank, cast right in I believe, so that the tank will stand without a boot. The orange paint looks like it's original, and I don't think the tank is galvanized underneath. At this point I doubt I'll use this one for doubles, unless I find another one with the same casting on the bottom. It's a pretty cool looking tank, not in bad shape at all.

Is anyone familiar with these particular LP72s?

 

[captain]

I think Nemrod the was last company to sell that style tank. What is stamped on it.

 

[halocline]

I think Nemrod the was last company to sell that style tank. What is stamped on it.

DOT3AA2250
29868DJ (serial number?)
looks like AWK (faint)

5/69 original hydro
2/82

There's also a faint, smaller 1467 about halfway around the shoulder between the DOT/serial number and the hydro stamps.

The bottom of the tank is pretty buoyant.

 

[diver35]

I got my LP72 today, took off the boot, and found a set of six "bumps" around the bottom of the tank, cast right in I believe, so that the tank will stand without a boot. The orange paint looks like it's original, and I don't think the tank is galvanized underneath. At this point I doubt I'll use this one for doubles, unless I find another one with the same casting on the bottom. It's a pretty cool looking tank, not in bad shape at all.

Is anyone familiar with these particular LP72s?

If they are steel tanks then they are definelty galv. under the paint. another good way to tell is if the staqmping on the tank is hard to read, as paint fills the indentation up then at factory.

I know a guy who has a similar tank with the bumps I'll ask him what make his is and any concerns.

 

[halocline]

This is what the bottom of the tank looks like.

 

[DoubleHoseDiver]

Nice little setup you have there! Tim