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Soap Making Forum > The Soap Making & Craft Forum > Beginners Soap Making Forum > Is Pyrex all right for one use?
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Old 07-12-2017, 02:35 PM   #61
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To be fair, there are a lot of "never-ending songs" around this forum... doesn't mean we should discount an interesting discussion on the effects of lye on glass.



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Old 07-12-2017, 02:59 PM   #62
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To be fair, there are a lot of "never-ending songs" around this forum... doesn't mean we shouldn't discount an interesting discussion on the effects of lye on glass.
I agree.


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Old 07-12-2017, 08:01 PM   #63
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The Song That Never Ends is a children's song
https://en.wikipedia.org/wiki/The_Song_That_Never_Ends
Ack!- the Lambchops/Shari Lewis song! That was one of my son's favorite shows to watch when he was real little. Just when I thought I had finally gotten that song out of my head forever! Thank you ever so much for the reminder Dibbles.


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To be fair, there are a lot of "never-ending songs" around this forum... doesn't mean we shouldn't discount an interesting discussion on the effects of lye on glass.
I agree as well. Especially since there are always more and more newcomers to the craft (and to the forum) whose only prior knowledge of soapmaking may have come from reading a few blogs or watching a few videos online that unbeknownst to them contained very questionable practices or faulty info. I view threads like these as more of a positive than a negative because they help get the word out so that newcomers can get started off on the right foot.


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Old 07-12-2017, 11:24 PM   #64
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I use pyrex measuring cups and/or the 6 quart glass mixing bowl from a kitchenaid stand mixer to mix oils and lye solution. Stainless steel is safe for lye solutions however aluminum isnt. Most commercial operations use stainless steel as it isnt reactive with lye. I use lab quality borosilicate beakers (the 500 ml, 1000ml and 2000 ml are quite nice and cheap) for making my lye solution. I have concerns over the lye leeching compounds form the plastic containers. I do use plastic long spout containers to portion out my soap batter and mix colors in, but the length of time they are in these containers is minimal. Lye solution will sit in its container for an extended period of time as it cools.
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Old 07-13-2017, 04:05 AM   #65
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[QUOTE=IrishLass;654454
I agree as well. Especially since there are always more and more newcomers to the craft (and to the forum) whose only prior knowledge of soapmaking may have come from reading a few blogs or watching a few videos online that unbeknownst to them contained very questionable practices or faulty info. I view threads like these as more of a positive than a negative because they help get the word out so that newcomers can get started off on the right foot.


IrishLass [/QUOTE]

And I really appreciate everyone's input! I had no idea this would end up being such a subject of debate. I've enjoyed following the conversation, though; I feel that I've learned a lot.
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Old 07-13-2017, 10:45 AM   #66
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Ack!- the Lambchops/Shari Lewis song! That was one of my son's favorite shows to watch when he was real little. Just when I thought I had finally gotten that song out of my head forever! Thank you ever so much for the reminder Dibbles.






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Old 07-17-2017, 10:55 PM   #67
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Pyrex is quite safe. Over time, caustic can etch the glass, but this would take literally hundreds of batches before you would even notice and you would likely throw out the pyrex cup before it caused any issues as the glass would become a bit frosted before any problems.
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Old 07-18-2017, 04:18 AM   #68
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Pyrex is quite safe. Over time, caustic can etch the glass, but this would take literally hundreds of batches before you would even notice and you would likely throw out the pyrex cup before it caused any issues as the glass would become a bit frosted before any problems.


Did you read any of the previous posts before posting this?

That aside, is Pyrex quite safe or very safe? At what sign of frosting should I stop using it? Are you assuring me completely that I will have no other issues with my Pyrex (of any quality) with my soaping? Can you provide your contact details for me to claim on your insurance when something happens to my Pyrex which doesn't fit with your guidelines for frosting etc?
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Old 07-18-2017, 12:56 PM   #69
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Pyrex is quite safe. Over time, caustic can etch the glass, but this would take literally hundreds of batches before you would even notice and you would likely throw out the pyrex cup before it caused any issues as the glass would become a bit frosted before any problems.
Back when I first started making soap, around 10 years ago, I had seen it recommended somewhere to use Pyrex for mixing lye, so I did. Soon after, definitely not "hundreds of batches" later, I noticed that the glass looked cloudy. Luckily, I read that this etching is caused by the lye, and eventually the glass will begin to release micro shards of glass. I don't know that there is any way to predict when this will happen, but it wasn't something I was willing to risk, so I threw the Pyrex out.

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I don't like to use metal making soap because of DOS (even though SS should be safe) and because it's so dark in a metal pot that it's difficult to see what's happening and you can't see what's happening at the bottom at all.
pj, ever since getting rid of my Pyrex cup, I've used a SS saucepan for my lye solution. SS isn't dark, so I can easily see to the bottom, and I like that the metal makes it easy for me to gauge the temperature by feeling the outside of the pot. I've used the same saucepan for years, with no problems, and I've continued to also use it for cooking with no problems.

I know there are plastics that can also be used for lye, but I already had the saucepan, as well as the SS stockpot that I use for making my larger batches of soap. SS is non porous, so there's no problem using SS for both soaping and cooking, provided of course, that you wash it well. I think most people have SS pots of various sizes already, so I'm surprised that more don't use them. As for DOS, I've had a batch or two early on, but not in years, and as I've said, I use the SS all the time.
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Old 07-18-2017, 01:35 PM   #70
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pj, ever since getting rid of my Pyrex cup, I've used a SS saucepan for my lye solution. SS isn't dark, so I can easily see to the bottom, and I like that the metal makes it easy for me to gauge the temperature by feeling the outside of the pot.
You are right of course about SS. I like to be able to see the batter mixing so plastic is perfect for me. 😃


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