master batching

I am very new to soap-making. I more or less follow the cold process but I heat my oils to 160-170F and hold them at temp on an induction range while I mix my lye. I read somewhere that the oils and lye should be within a 10-15F degree range of each other so I mix them at 160-170F, remove it...

I'm about to try master-batching, have read through tons of threads here, and still have some questions that I didn't see addressed elsewhere (if they have been, please indulge me anyway). 1. I'm assuming most of you don't create that master-batch in your storage container. Most of those have...

I just read in Kenna Cole's (wonderful) ebook on master batching that HDPE is best for lye water because it holds up excellently. I also just checked an MSDS on lye and it confirms HDPE is best (for airtight storage). Do you know of any high-temp-safe HDPE buckets? For purposes of mixing...