Re: [APD] What do you make siphons out of?

[Rod Gerrymander <rgerrymander at yahoo_com>]

I have read about filling the tubing with hot sand
and then bending it.  Kind of like the spring idea,
but sand is easier to find.  Anybody ever try that?

Thanks,
Rod

--- "S. Hieber" <shieber at yahoo_com> wrote:
> You can sometimes buy rigid tubing from lfss and
> on-line
> fss. While most carry the small diameter for use
> with
> airlie tubing, some carry the larger diameters. The
> trick
> then is to heat and bend it without causing a crimp.
> The
> easiest way if you have the parts is to insert a
> close coil
> spring that's jsut a little smaller than the inside
> diameter of the tubing. Heat the tubing and bend
> around a
> post carefully, hold in position until it cools. You
> have
> to be carefull to not get the tubing too hot -- jsut
> enoung
> so that it can be bent without stress fractures. The
> spring
> should keep the tubing from crimping. 
> 
> The spring needs to be one that bends easily.
> Hardest part
> of this is finding the spring.
> 
> Scott H.
> 
> --- Rod Gerrymander <rgerrymander at yahoo_com> wrote:
> > I have located a couple of places where I can buy
> > clear 3/4" PVC pipe and fittings, but it is
> expensive.
> > 
> > I have made siphons from regular PVC like you
> would
> > use for plumbing, but you can't see in it to see
> if
> > it has bubbles or other problems.
> > 
> > I have made siphons from clear plastic tubing, but
> I
> > can't bend it so I end up cutting and gluing
> together
> > sections.  The end result doesn't give me a lot of
> > confidence.
> > 
> > My project requires some specialized shapes, and I
> > want
> > the siphons to go deep into the water, and on the
> > input
> > side maybe have some kind of grating so I don't
> get 
> > clogged up.
> > 
> > Could you share your ideas on building siphons?
> > 
> > Thanks,
> > Rod
> > 
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> 
> =====
> S. Hieber
> 
> -  -   -   -   -   -   -   -
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> Nov 12, 13 & 14, 2004 -- Crystal City, Virginia
> 
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