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Brian Kraack wrote:
> Any details you can provide about what you used for the gun barrel would
> be appreciated.
> I have 3 PVC pipes, 1 2", 1 1.5" and 1 1". These will make up the three
> different diameters along the length of the barrel. What did you use to
> transition between the lengths. I haven't found any PVC fittings that
> appear to do the job, so I am thinking that I will have to use epoxy
> paste ... also, what did you use for the module at the base of the
> barrel, where it attaches to the turret ...
I used a combination of materials (whatever happened to be the right
size). PVC, cardboard, aluminum, etc. all work well. I used a cardboard
tube that was the perfect diameter and epoxied in some 1/2" plywood
plugs in each end and sealed the tube with epoxy as well. Strong, cheap
and easy to modify. I then drilled a whole in each end that was just
big enough for the inner barrel. The muzzle is also made from cardboard
which was cut and shaped to form and then coated with epoxy and some
Epoxy is a good transition material, allowing you to shape the joint as
much as you want. I used a 50-50 mix of epoxy and pulp. You could use
micro-balloons as well.
I made the mantle (I think that's what it's called?) (eg. the part that
connects the barrel to the turret) out of plywood. The Tiger doesn't
have a lot of curves, so shaping it was easy. But even with lots of
curves, files and sand paper make quick work of pine. Then, I drilled a
hole through the mantel for the inner barrel and used a temporary inner
barrel to align everything before gluing and screwing the barrel to the
mantle. Note, my barrel is made in three parts:
a) an inner barrel of 3/4" high-pressure PVC,
b) the barrel base and mantle,
c) the outer barrel and muzzle.
The inner barrel slides into the other two pieces and the outer barrel
and base connect together with a PVC joint. That lets me easily take
off the barrel when transporting everything and when I need to clean the
inner barrel or otherwise work on things.