Safrole can sometimes take awhile to crystalize,then when it does its quite spontaneous.If your sure swiy's sassy is 90%+ then he will eventually get it to freeze.If after awhile it still hasn't crystalized and swiy is getting impatient there are a few tricks to force it.
(1)Take a glass rod and tap/rub it on sides of your supercooled container,this will sometimes cause spontaneous freezing(this has onnly been observed in glass containers)
(2)Add a tiny drop of allready near freezing water to your supercooled container,cover,place back in freezer and wait.
(3)Cool using a dry ice/acetone bath for awhile,or alternativly just toss a small piece of dry ice directly into cooled sassy oil.(swim has never been forced to this extreme w/high% sassy)
There are probably more but they are unknown to me(possibly to be found in tfse)
Swim has had the fastest freeze times using a small ss measuring spoon with about 5 drops of sassy oil.This is chilled in the freezer for several hrs and then he add a drop of near-freezing h2o and back into the freezer.
Just use a real small container with a real small amount of sassy in it,you only need a tiny amount to seed.
Crystalizing at freezer temps doesn't do us any good for purification as the whole mass(or most of it) will solidify.
For purification we need to get a volume of sassy oil as close to a steady 11c as possible,drop in your seed and let it crystalize as slow as possible for a couple days.
If you did this in a jar or other container with and airtight lid now just turn it upside down and let all the liquid drain down to the lid.If you didn't then just turn your container upside down and set it in a baking dish or some shit to let it drain.(all this tipping and draining is done inside the fridge btw)
The longer you let it drain(to a point)the less recrystalizations you may have to do to get the same purity product imx.
Freezing is an awsome way to purify your safrole,allthough if you think your going to avoid the joys of distillation think again
.Might as well start practicing now eh
.Its also quite a site to see those inch thick,four inch long totaly clear safrole crystals(spontaneous crystalization looks really cool,too bad thats not what we want)
I highly reccomend you utfse extensively on this subject theres lots of info there.
Good luck to you Bro.
Peace,chambered.