What do you recommend for lining your soap molds?
It depends on which molds you buy. The smaller soap molds you can get by with using a light coating of shortening (hydrogenated soybean oil), although other oils, such as, olive and coconut will suffice – even cooking spray like PAM, etc.
The larger soap molds that work with our professional soap cutters should be lined with parchment paper. The best liner is our own Mold Release Liner, made to our specifications and width. You can also use plastic lined freezer paper, although this does not smooth out as well.