Have 90 degree one inch diam. grey plastic tubing 90 deg. bend.
Want to bend it some more; hopefully to 180 degrees (or close to that)
to make shape of a 'J'.
Any suggestions. Heat gun? Flame? Oven? Also will it tend to flatten
as metal pipe does when bent further?
If this doesn't work could I use something else; that newer PEX water
piping for example?
Help/advice appreciated. TIA
Not quite sure what you mean by an elbow?
This 90 degree is at moment about 9 inches across its outer tips.
If it can bend some more the tips will come in to perhaps less than 5
inches and perhaps be almost parallel at 180 degrees input to output
to each other Two 90s would be way too big!.
Just imagine a large J like this.
x x <--------- additional bending.
< 5" >
Thanks for the comments/advice.
Knew somebody would eventually ask!
It's an attempt to make a compact J bend to go through the deck of
sailboat near the bottom of the mast through which to take the wires
from the mast into the boat; where they will connect to a terminal
On another group we have previously discussed which lights are
required under international regulations and where they must be
located on the mast while a) Sailing b) Motoring c) At anchor.
Also the number of conductors needed etc. (About 6 plus a small coax
for masthead VHF radio whip).
The decision, so far, is to not use plugs/connectors/sockets which in
the past ** have either corroded badly (marine conditions) or being
deck mounted have allowed water to get through them into the deck
laminate. Then during the winter the water froze and burst the deck!
Each winter for storage the mast is removed and wires disconnected.
The fibreglass boat was made in the 1970s. We have owned it for some
20 years. Overall the project is a major refurbishing including
rewiring the whole boat after some 15 years laid up next to our house.
At least that makes it easier to work on, have AC power available and
access to all ones bits and pieces and tools.
Fixing up boats at a marina 25 miles away can cause one to drive back
home to pick up a forgotten SS bolt or one particular but essential
tool. (Sounds a bit like plumbers who forget their tools eh?)
** The problem started when a previous owner had a new mast installed
following a dis-masting. Whoever did so drilled holes and mounted two
deck sockets that allowed water to get into the deck structure. That
frozen water burst the deck around base of the mast.
Lots'a work might eventually get it in the water again!
Thanks for the question and the advice.
If you get the bend, how you going to do the pull? Sounds iffy...
I'm thinking in terms of a watertight access cover w/ rear entrance on
one end and 90 on the other? Don't know if can find one w/ both
entrance/exit as rear or not...
Stick it in the tailpipe of your truck (running and warmed up) .
Watch it and keep turning it until it just gives to the touch. Stick a
cold coupler on the "hot" end right away to hold that dimension and
make your bend. Lay it flat on the pavement and work out any kinks
while it cools.
Once you get the touch you can do almost anything with PVC. I have
seen old sparkies create things of beauty on the sidewalk next to
thieir truck. Just don't forget the COLD coupler on the soft hot end
so it won't get warped and it will still connect to the other pipes.
Pop that off when it is cool and you have a perfect end.
I've bent grey PVC up to 2" without "proper" tools. At smaller sizes,
a heat gun alone will do the trick. At larger sizes, add a helper and a
stove top is useful ;-)
I heat it slowly, so I can adjust what bends when, and thereby avoid
having the tube flatten. Takes longer.
With larger sizes, the stove is useful to avoid cooling as you move the
gun around, and you want two hands on the pipe.
If you pour on the heat faster and soften the tube quickly and over
a wide area, something like the sand (or tube bender "spring")
method is required.
Age and Treachery will Triumph over Youth and Skill
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