Yes, all my sizers are filled with molten lube.
I see people making molds for bullet lube. The kinds of moulds that will produce a hollow or solid stick of bullet lube. There is nothing wrong with that method and if that is your goal then by all means use that method.
However, for me personally, it just seems about 5 X quicker to simply pour your melted bullet lube directly into your lube sizers.
I was in a " Thrift Store " a few days ago and saw a nice old, clean , aluminum coffee pot - - ( $1.50 for the pot and lid ) . It had a strainer in the mouth to strain coffee grounds ( easy to remove with a Dremel and a carbide cutter ).
When I saw it , I thought :
" UUUUmmm, now this would be just the thing to melt and pour lube into my 2 lube sizers."
Today I made some more
Ben's Red in this old coffee pot and when completed, rather than pouring the lube into molds for storage, I simply filled my two Lyman lube sizers. When they were both filled, I placed the lid back on the coffee pot and allowed the lube to solidify until the next time I need it.
SIMPLE ! !
Here I have filled both of my lube=sizers without spilling a single drop of bullet lube .
Remember , if you use this method , only fill to about 3/4 " of the top.
The pressure nut has got to go back in place once the lube cools & turns back into a solid :
Ben