In article ,
errfrsdaf wrote:

I've got some ideas. Does anyone know how resin impregnation
is done?

One method (there are no doubt others).

A vacuum vessel and a vacuum pump. Some low-viscosity slow-curing resin.
a few means of manipulating things in the vacuum vessel. If the vacuum
vessel is also a qualified pressure vessel (as in properly engineered -
do the math, you don't want a 12 inch diameter lid blowing off) so much
the better.

Crude method (and far less than perfect) for no manipulation possible:
mix up some resin, drop in thing to get full of resin, pull a vacuum on
it until the bubbles stop.

Better method - pull a vacuum on the chamber, with thing to get full of
resin sitting in an empty container. Resin is either mixed up in a
container in the chamber set to pour, or outside set to run in though a
tube. Once the vacuum is well-established, then pour the resin in.
Release vacuum (which applies some pressure). If a pressure vessel is
available, move the container to it if it is not the same as the vacuum
chamber and apply pressure.

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