Hello All,
When boiling frames,etc. we use a 55 gallon drum outside.  When we need
another can of lye we open the lye can  and toss the lye in can and all.
Safest way we have found. You can retrieve the cans later when you are done
and are cleaning out the drum. . Tossing the can in is the only way I have
seen lye added to a hot drum of lye. We sit the drum on concrete blocks and
build a fire under the drum. Don't fill the drum over 2/3 full of water.
Sincerely,
Bob Harrison
Odessa,Missouri