Thanks Grant. I was re. to "caulking" chisels used to upset the edges of
lap-rivited joints used in ship and boiler construction. Also spelled,
"calk". Def. #3, from Webster's New World College Ed.: "to make (a joint
of overlapping plates) tight by hammering the edge of one plate into the
side of the other."

Bob Swinney
"Grant Erwin" wrote in message
...
Robert Swinney wrote:

Why bother? Ships haven't used riveted construction, needing upset
caulking, for many years. Old boilers, maybe.

Bob Swinney
"Bugs" wrote in message
oups.com...

Get some leaf springs from a wrecking yard. They will last forever with
a good hardening & tempering, I have rock chisels I made forty years
ago still in excellent condition. Oil harden & draw to light blue
spring temper. Any harder & the striking face could chip.
Bugs

Up here in Puget Sound there are still many many wooden fishing boats
which have to be brought into drydock periodically, scraped down,
re-caulked
and repainted. They still use caulking irons to drive the oakum between
the
boards as far as I know.

Maybe we're talking about two different things - terminology can be
difficult
around marine issues.

GWE