Chaotic Glass by Mike Aurelius

Safety for the glassworker, and random thoughts and opinions on the state of the glassworking world

Archive for December, 2007

Workstation enclosure pictures

Posted by mikeaurelius on December 31, 2007

There have been some requests for pictures via e-mail about the type of workstation enclosure I am currently using. Read the rest of this entry »

Posted in Safety, Ventilation | Tagged: , , | Leave a Comment »

A good morning smile…

Posted by mikeaurelius on December 31, 2007

Someone asked which torch I use — it is a Bethlehem Tiger Shark, purchased before Bethlehem decided to threaten their distributors and act like childish brats. I’m happy with what I have right now, but I’m considering purchasing the Nortel Rocket torch, with the ’side car’ pre-mix torch. I had a Red Max several years back with a pre-mix upper and found that there are just some things you really do need a pre-mix for…

Had a quiet weekend, my son and I went to see “Waterhorse: Legend of the Deep” Friday afternoon and “National Treasure: Book of Secrets” yesterday (Sunday). I highly recommend both films. Wil Smith has a new movie coming out next summer, this time he’s an alcoholic superhero — looks it will be a fun movie — the trailer was very funny.

I am making mincemeat pie today for the family New Years party tomorrow. I cheat a bit and use the Nonesuch pie filler but I “beef” it up by adding more apples and raisins.

That’s all for now – I need some coffee and breakfast!

Posted in General Ramblings | Leave a Comment »

Bulk tanks and the Hot Head Torch

Posted by mikeaurelius on December 30, 2007

It is my opinion that using a bulk tank and a Hot Head torch is the single most dangerous activity a glassworker can do. Just because you can doesn’t mean you should.

The Hot Head torch is designed to operate at full tank pressure, which averages around 120 PSI. One crack or one cut in your fuel line and your studio will be filled with an explosive level of fuel. The explosive limit on propane is somewhere around 3-4%, so in an average sized room, it would not take long for the room to reach that limit. “But I keep my tank inside right next to me” you might say. And keeping your tank right next to you MIGHT save you from blowing up with your house, but it is in violation of the NFPA codes and laws, and if there were ever a fire in your building, most likely your insurance company would not pay for any damage and would probably cancel your insurance policy.

You might also say “But glass distributors sell these hoses all the time”. Yes they do. But once again, that doesn’t mean you should use them. The hoses being sold are for use in RV’s, construction work, and other non-code applications. Using a bulk tank and a Hot Head torch is flat out DANGEROUS. There is no safe way to use a bulk tank and a Hot Head torch.

“Can I plumb the fuel line for a Hot Head torch?” NO. NFPA and building codes around the US limit the maximum pressure for a through-the-wall connection to 20 PSI. The Hot Head torch cannot operate at 20 PSI.

The Hot Head torch is a good beginners torch. You can learn the basics of glassworking with it and build up your experience level. And then move on to a oxygen-fuel gas torch. You will find that using an oxygen-fuel gas torch will be hotter, more focused, and use far less fuel. And they are miles away more quieter.

Posted in Propane, Safety | Tagged: , , | 21 Comments »

Kiln controllers — everything you didn’t want to know

Posted by mikeaurelius on December 28, 2007

There are three basic types of temperature controllers available: ON-OFF, Proportional and PID.

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Posted in Tech Talk | Tagged: , , , | 2 Comments »

Home Studio Topics — the Bedroom Studio

Posted by mikeaurelius on December 28, 2007

I’ve had many requests to discuss this particular location, so here goes… Read the rest of this entry »

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Home Studio Topics — plumbing for fuel gas

Posted by mikeaurelius on December 28, 2007

Writers note: this is an expansion on an earlier “quick and dirty” article “Plumbing Propane for the Glassworking Torch“.

As we all know (or at least I hope we all know by now), it is illegal to keep more than two one-pound cannisters of propane in your house or garage at any given point in time. If you are using a 20# propane tank (the kind most often found on bbq’s), this of course means it must be kept outside.

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