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The AOS alum is old and worn and was dropped a few times when it was thin. So it broke. I included it as a reference to the quality of it over time and usage. it still retains its smoothness and...

Here are the three I use. You can come to your own conclusions on which ones you prefer.https://uploads.tapatalk-cdn.com/20170205/a169020756bc37f87c9ece6d0980b2b5.jpg

YMMV

Sent from my...

I have used three brands of Alum so far. 1st AOS Alum block, a seemingly high quality hunk of crystal that melted well and didn't get gritty even if you didn't dry it or take care of it properly but...