What to use to make a mold?

sisu1a wrote:

There's always the option to just trap your lead shot in epoxy
thickened with cabosil or microballoons etc, which seems much easier
but will obviously not provide the same density as a solid block...

It does avoid the breathing of lead vapors, something even a pilot
should avoid.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly

* "Transponders in Sailplanes" http://tinyurl.com/y739x4
* Sections on Mode S, TPAS, ADS-B, Flarm, more

* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org

On 23 Mar, 02:01, Eric Greenwell wrote:
sisu1a wrote:

It does avoid the breathing of lead vapors, something even a pilot
should avoid.

Is the sublimation rate of lead at room temperature significant?
Church roofs seem remarkably resistant to evaporation after hundreds
of years, as do the 120 year old lead water pipes in my house.

Ian