Important Information From Pyrex

[Metal Head]

Just a couple days ago I made a phone call to Pyrex to ask them about a small hairline crack I had in one of my cups from dropping it. I was asking them if it could be reused and they said "yes, but what will you be using it for?" I told them for melting plastic and getting it to temperatures around 350 degrees. Instantly, the lady on the phone said that I shouldn't reuse the cup after I told her that. I asked why and was transferred to someone higher up who she said would have an answer. Within a minute, a man was on the line and me and him began talking about the durability of Pyrex and using it for melting plastic. He assured me that it could handle the plastic, but all precautions must be taken because such a thick, viscous mixture is capable of holding heat for a very long time and heats up very quickly and puts LOTS of stress on the Pyrex itself.

I asked about using it on a hot plate/skillet too because I recently have been using a metal hot plate/skillet at a lower temperature to keep my plastic warmer, longer for bigger pours. He told me that by doing that, I was only setting myself up for disaster down the road. No matter how close the temperature between the cup of plastic and the skillet, it would put tremendous stress on the glass and was cause gradual weakening and possible explosions. He said that small cracks and fissures will begin to occur within the cup and the constant and persistent extreme stress of the heat put on the cup can cause violent explosions. Trust me, by the tone of his voice and the descriptions of its adverse affects, he was more than convincing on the hazards of placing Pyrex cups on a skillet.

I just wanted to post this information because many members on this board I am sure have done this before and even more are considering it and after my phone call with Pyrex, I have been thoroughly convinced that this is incredibly unsafe and should be avoided at all costs. Stay safe guys.

[daveh]

Just a couple days ago I made a phone call to Pyrex to ask them about a small hairline crack I had in one of my cups from dropping it. I was asking them if it could be reused and they said "yes, but what will you be using it for?" I told them for melting plastic and getting it to temperatures around 350 degrees. Instantly, the lady on the phone said that I shouldn't reuse the cup after I told her that. I asked why and was transferred to someone higher up who she said would have an answer. Within a minute, a man was on the line and me and him began talking about the durability of Pyrex and using it for melting plastic. He assured me that it could handle the plastic, but all precautions must be taken because such a thick, viscous mixture is capable of holding heat for a very long time and heats up very quickly and puts LOTS of stress on the Pyrex itself.

I asked about using it on a hot plate/skillet too because I recently have been using a metal hot plate/skillet at a lower temperature to keep my plastic warmer, longer for bigger pours. He told me that by doing that, I was only setting myself up for disaster down the road. No matter how close the temperature between the cup of plastic and the skillet, it would put tremendous stress on the glass and was cause gradual weakening and possible explosions. He said that small cracks and fissures will begin to occur within the cup and the constant and persistent extreme stress of the heat put on the cup can cause violent explosions. Trust me, by the tone of his voice and the descriptions of its adverse affects, he was more than convincing on the hazards of placing Pyrex cups on a skillet.

I just wanted to post this information because many members on this board I am sure have done this before and even more are considering it and after my phone call with Pyrex, I have been thoroughly convinced that this is incredibly unsafe and should be avoided at all costs. Stay safe guys.

you should of asked them if they had any plans to make devided cups. they would sell great.thanks for the info

[MuskyGary]

Also if they had a pointed spout so you could pour a smaller stream.

[Richard Prager]

Also if they had a pointed spout so you could pour a smaller stream.

with heat resistant handles

[powerworm]

if you have been doing this long enough you hould know that any glassware tempered or not is not made for direct heat such as a hot plate common sense tells you that. i know we have all done it put its the wrong tool for the job.

[Richard Prager]

if you have been doing this long enough you hould know that any glassware tempered or not is not made for direct heat such as a hot plate common sense tells you that. i know we have all done it put its the wrong tool for the job.

We know that but allot of people starting out aren't aware of it. We get so excited when our first molds, plastic and other supplies arrive, we just want to start making baits. Been there. It's important to read the "Don'ts for Newbies" as well as utilizing the MUCH OVERLOOKED search engines in each forum. Plastic at 300+ degrees burns like heck and keeps cooking once it spills on you. You can't make from a hospital bed. Anyone pouring plastics, do yourself a favor and keep some Silver Sulfadiazine close by.

[Metal Head]

Which is exactly why I posted this 152nd Street Baits because I see and hear of a lot of people doing this and only started doing this myself because I saw others doing it and assumed it was safe enough. Common sense told me that it would be risky, but I didn't have enough personal experience with Pyrex to judge whether or not it would be safe enough to get a way with doing.

Just wanted to pass on DIRECT information from the company themselves and not "a friend who does this all the time," or "a guy I know got burned doing that and told me it was bad."

[Richard Prager]

Which is exactly why I posted this 152nd Street Baits because I see and hear of a lot of people doing this and only started doing this myself because I saw others doing it and assumed it was safe enough. Common sense told me that it would be risky, but I didn't have enough personal experience with Pyrex to judge whether or not it would be safe enough to get a way with doing.

Just wanted to pass on DIRECT information from the company themselves and not "a friend who does this all the time," or "a guy I know got burned doing that and told me it was bad."

Your efforts and info are appreciated. I googled pyrex not to long ago. I think I posted it on Delw's site in a thread similar to this one. Apparently, in the 70's I believe it was, you were able to put Pyrex on direct heat. They were made differently then. That is no longer true.