Leaking Little Wizard

I have bought an old Dietz Little Wizard lamp over eBay. Blue
with red glass.

But the lamp had som "minor" damages - a half-glass crack, a stuck
burner gauge, it's "tilted" (i guess it has got a hit...), the wick was
finished. And for the last but worst: the tank is leaking!

I have fixed the burner control by WD40 (5-56 spray), replaced the
wick with a slightly smaller.

Yesterday I tried to repair the leak by using "Elast-o-rub", some kind
of silicone - with a great failure. Paraffin + silicone/elastorub is like
water and soap here...

And another thing for the record: never put masking tape on an old
painted lamp - the color gets off. Now the bottom of the
tank looks more damaged than before.

So what should I repair the tank with? I have heard of epoxy, and
I have also been thinking of electro-soldering.

It's leaking in the bottom, in the border between the bottom plate
and the container, not a small crack, but a fire problem.

Lamp has soooooo nice colour when it's lighted up... (bad me,
tested even if it leaked, he he he...

I have not used a torch before in my life.

I guess I must fill the tank with water first to ensure that no fuel
is left in it if I try to solder.

Problem is I have no torch, just a soldering pen.

EDIT:

I try super glue first, to see if that helps. Usually this
glue melts together fingers and destroy kitchen sinks here, so
why not some mm-small holes in a lantern can... Looks
good for now.

Thanks for the reply, I was just going to use the soldering pen,
when I thought that it was to overdo it... so went on with the super
glue as above.

Just hoping that the glue does react with paraffin/kerosene like
the silicone did.