Joseph – I think you are

[Anonymous]

Joseph – I think you are over complicating the solution

All you need for the dams is an old cut up kiln shelf and some fiber paper (thicker is better).

Here’s a picture of the setup as viewed from above:

Not shown is that you want a piece of fiber paper under the whole setup.  The result is that the fibre paper works as a gasket of sorts between the kiln shelf slices (or other appropriate kiln furniture).

To reinforce the sides, simply put something with heft against the dams.  Additional pieces of a cut-up kiln shelf works great.

I’ve used this setup countless times, including for 2″ thick paperweights.  Done right it never fails.

– Paul

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Paul
FusedGlass.Org
Helios Kiln Glass Studio
PaulTarlow.com