One should ALWAYS wear a respirator when handling investment,
while mixing (less dangerous but still dangerous), and for
knockout after casting (most dangerous), whether wet or dry. A
breathing unit shoule be used while buffing too.
This is all true, even if you just do one or 2 castings. It is
especially true if you work with this material often and over a
long period of time. If you work with these materials all day
every day, you MUST be VERY VERY mindful of the health hazards
that with this sort of exposure are not potential hazards, but
for sure hazards.
John
John and Cynthia/MidLife Crisis Enterprises
Maiden Metals/C. T. Designs/ Bloomin’ Wax Works. etc.
PO Bx 44, Philo
CA 95466
Ph 707-895-2635 FAX 707-895-9332
The playfulness of the Universe
is reflected in the dance of the stars!