OK, I figured I'd post this to you all as a warning to not repeat what I did this weekend. I have used a 5000 ML borosilicate Erlenmeyer flask for the last year. I've used this flask on direct gas stove top oven and placed it into ice water many times with no problem.
Yesterday, I was out in the garage, so I decided to throw my 5000 Starter on the Brewturtle (my name for my brew sculpture) and crank up the heat. I put it on the smaller banjo burner at 55K and after about one minute, I heard pop and saw 5 liters of starter wort falling to the floor.
So what I got out of this, and if anyone knows better please correct me, but Borosilicate glass will withstand average stove top burners (13K BTU) but if you really want to speed it up, your going break it and will have to throw down another $50 for a new flask (like I did). The only saving grace is that it was outside so I could hose it down fairly easy...
Yesterday, I was out in the garage, so I decided to throw my 5000 Starter on the Brewturtle (my name for my brew sculpture) and crank up the heat. I put it on the smaller banjo burner at 55K and after about one minute, I heard pop and saw 5 liters of starter wort falling to the floor.
So what I got out of this, and if anyone knows better please correct me, but Borosilicate glass will withstand average stove top burners (13K BTU) but if you really want to speed it up, your going break it and will have to throw down another $50 for a new flask (like I did). The only saving grace is that it was outside so I could hose it down fairly easy...