(no subject)

[un-rational.livejournal.com]

i just got some amazing metal candle molds for free 
:D

i want to make some candles
but its sort of a new area for me

i've been using this site
http://www.diynetwork.com/diy/cr_candles/article/0,2025,DIY_13748_2274489,00.html

do you need to use something on the inside of the molds to help them slide out easier?
and 
do you need to use mold sealer? does anyone use something as an alternative?

:)
thanks in advance