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tech / rec.crafts.metalworking / Today's Metal Working Content

SubjectAuthor
o Today's Metal Working ContentBob La Londe

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Today's Metal Working Content

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https://news.novabbs.org/tech/article-flat.php?id=8828&group=rec.crafts.metalworking#8828

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From: none@none.com99 (Bob La Londe)
Newsgroups: rec.crafts.metalworking
Subject: Today's Metal Working Content
Date: Thu, 28 Sep 2023 14:47:20 -0700
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 by: Bob La Londe - Thu, 28 Sep 2023 21:47 UTC

I've been working on a dead man's boat for a while now. Before he died
he asked me to take it away. I might have told the back story here
before so I'll try to make it short.

My buddy Gary tried to get me to buy his boat a few times. His son had
taken it all apart all and then had to "go away." Gary (retired old
Vietnam era vet) would walk out and start to work on it, but lose heart.
One day he called me up and told me to get it out of his driveway. He
was tired of looking at it.

I didn't want it. I've got to many projects in the works, and two more
boats I want to build from scratch. The last thing I wanted was another
project. When I heard the tone in his voice I knew the only right thing
to do was to give him a few bucks and let it sit in my driveway. I
figured I could quadruple my money if I sold the outboard and scrapped
the hull for salvage.

The thing is in the back of my mind I wanted to put it back together and
take him fishing in his old boat. I started working on it, but very
slowly over the course of a few years. Then Gary's cancer came back.
He had almost ten good years in remission, but it came back bad. This
time the docs said they could try chemo, but don't count on it.

One day I called him to ask a few questions... I was working on it again
because I knew Gary's cancer was going to kill him this time. His
daughter answered and said this was it. If I wanted to see him come
now. I spent a couple hours with my friend holding his hand and
babysitting his grandson while his daughter got away to run some errands
and do some necessary shopping. That was his last day on earth. His
daughter called me the next day to let me know he was gone.

I guess that wasn't so short after all. I've been working on it lately.
I'm making it "better" or maybe extending the time before it goes to the
scrap heap. All the wood had to go. It had a plywood sole and plywood
decks in an aluminum boat. Its okay if you don't mind re-carpeting
every couple years, and re-decking periodically. I got rid of all that
plywood. used a plasma cutter to blow out all the steel screws that
should have never been used, and built the sub floor structure on the
sole. I put all that back together with stainless steel closed end
blind rivet.

More recently I took out all the foam, and vacuumed out all the debris.
Then I cut a one piece sole out of 0.080" aluminum sheet, laid it in
placed, and drilled all the rivet holes to secure it to the ribs. Then
I took it back out.

I vacuumed out all metal chips from drilling holes, stuck the decent
foam blocks back in place and prepared to pour some more flotation foam.
The foam I'd had on the shelf for a dozen years wasn't any good any
more. Today I finally poured some more foam, and laid the sole back in
place.

I knew it was going to be a difficult task, but I'm forcing the holes
back into alignment for another round of closed end stainless blind
rivets to nail down the sole. I'm about half done. I started by using
some punches to align some holes in the back, secured just one rivet,
and then I forced some holes into position on the front. So with
leverage and a hammer I've gotten every hole to line up well enough I
could atleast tap the rivet into place with a hammer. Over half the
rivets are in.

Before anybody tells me stainless can still react with aluminum in a wet
environment. Yes. Yes it can. Not like plain steel, copper, or some
other metals, but it can very slowly. This is a fresh water application
so more slowly than that even, and this is inside the boat. Not through
the hull. I have regular aluminum rivets, a buck and an air hammer for
those applications. Also, about 75% of the original aluminum rivets
that held the sub floor structure (ribs and rib stiffeners) had broken.
The stainless rivets won't break any time soon.

Well, I guess my break is over. I gotta go put in the rest of those
rivets.

--
Bob La Londe
CNC Molds N Stuff

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