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concern over washing frames with solvent is a bit over done, as some
folks have noticed. If you are using the high quality silicones
based in modern chemistry, such as the 4X Series of silicones from
Zero-D Products, you have little to be concerned about. Occasional
washing with soapy water is appropriate, just as you should, from
time to time, clean all of your lab tools.
The lower cost, low quality silicones that are still based in older
chemistry do require great care when changing over to natural
rubber. In many cases, solvents may be needed, as these silicones
leave ingredients on mold plates, etc. The cure process is not
always complete. Generally, you can see the remnant on the mold
Do not confuse the foregoing with the need to clean tools used with
the liquid RTV silicones. In particular, if you use any urethane
RTVs, clean up well at the point of change over to silicone RTV.
Call me if you have questions or wish to evaluate the 4X series of
Zero-D Products, Inc.
Precision engineered materials solutions
Toll free 800-382-3271 in USA, Mexico and Canada