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Search: Posts Made By: CD Lampwork
Forum: Boro Room 2012-05-06, 5:23am
Replies: 46
Views: 14,895
Posted By CD Lampwork
Thanks, all very useful information.

Thanks, all very useful information.
Forum: Boro Room 2012-05-05, 1:38pm
Replies: 46
Views: 14,895
Posted By CD Lampwork
Oxygen questions

Just curious. What are you using? How fast are you using it up? How much is it costing you?

Currently I'm on 5 oxy-cons. each running 2 1/2-3 lpm into a tank then to my barracuda. I'm happy with...
Forum: Tips, Techniques, and Questions 2012-04-17, 9:28am
Replies: 147
Views: 35,551
Posted By CD Lampwork
There are a lot more technical sites, but this...

There are a lot more technical sites, but this one is pretty easy to understand

http://answers.yahoo.com/question/index?qid=20071212043237AAqfpWA

If the thermometer is touching the side of the...
Forum: Tips, Techniques, and Questions 2012-04-16, 2:37pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
Hey back off Susan, this is our order! LOL!!!!...

Hey back off Susan, this is our order! LOL!!!! Actually we were just looking at our table talking about how you bring way more to a show than Deanna. I suppose we could share. Love ya.
Forum: Tips, Techniques, and Questions 2012-04-16, 2:23pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
I've seen this question raised before in this...

I've seen this question raised before in this thread. As a professional full-time lampworking couple, I'm gonna say we'd consider it. Seriously.

Doing a rough count of how many beads we currently...
Forum: Tips, Techniques, and Questions 2012-04-15, 11:57am
Replies: 147
Views: 35,551
Posted By CD Lampwork
Well Kalera, I'll grant you those are much more...

Well Kalera, I'll grant you those are much more interesting articles than the experiential evidence given so far.

From what I'm reading the first link talks about repeated heating and cooling...
Forum: Tips, Techniques, and Questions 2012-04-15, 9:08am
Replies: 147
Views: 35,551
Posted By CD Lampwork
*Heavy sigh* Well I don't think discussing...

*Heavy sigh* Well I don't think discussing quality testing in an open, honest, thought out way makes our industry look either childish or foolish. Quite the opposite in fact. And as Corning lists...
Forum: Tips, Techniques, and Questions 2012-04-15, 7:47am
Replies: 147
Views: 35,551
Posted By CD Lampwork
Fair enough. I'll take on the math. Using the...

Fair enough. I'll take on the math. Using the Corning chart I listed a couple of posts back:
a 150mmX150mmX3.2mm annealed soft glass blank is expected to survive a 65 degree thermal shock. ...
Forum: Tips, Techniques, and Questions 2012-04-15, 7:02am
Replies: 147
Views: 35,551
Posted By CD Lampwork
I think the bottom line is this is a simple test...

I think the bottom line is this is a simple test anyone can preform. Most of the variables have been removed (boiling water and ice water are set temperatures). I would argue that it is a relatively...
Forum: Tips, Techniques, and Questions 2012-04-15, 5:14am
Replies: 147
Views: 35,551
Posted By CD Lampwork
I also ran across this chart from Corning. It's...

I also ran across this chart from Corning. It's more technical and easier to misinterpret, but interesting. They list the normal working temperature of soft glass as being 230 degrees (a little more...
Forum: Tips, Techniques, and Questions 2012-04-14, 6:13pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
From Arrow Springs. In short, glass will not...

From Arrow Springs. In short, glass will not retain thermal stress below the strain point (around 840 for COE 104).

http://arrowsprings.com/html/annealing.html


"The cooling of glass is most...
Forum: Tips, Techniques, and Questions 2012-04-14, 3:49pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
212 degrees is the boiling point of water. No...

212 degrees is the boiling point of water. No matter how high up you turn your stove, boiling water will remain at 212. The extra heat just makes it boil harder, not hotter. Just as ice water is 32...
Forum: Tips, Techniques, and Questions 2012-04-14, 2:29pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
Boiling water is 212 degrees F. Ice water is 32...

Boiling water is 212 degrees F. Ice water is 32 degrees F. A difference of 180 degrees F. This would be comparable to taking a glass dish out of the oven at 250 degrees F into an ambient room temp of...
Forum: Tips, Techniques, and Questions 2012-04-14, 7:33am
Replies: 147
Views: 35,551
Posted By CD Lampwork
You are the man Mike!

You are the man Mike!
Forum: Tips, Techniques, and Questions 2012-04-14, 7:31am
Replies: 147
Views: 35,551
Posted By CD Lampwork
That's my understanding regarding induced stress...

That's my understanding regarding induced stress as well. Though I do take Kalera's point that this should be tested.

So. Round small clear annealed bead. Tested with polariscope. Tested via...
Forum: Tips, Techniques, and Questions 2012-04-13, 8:44am
Replies: 147
Views: 35,551
Posted By CD Lampwork
I’m gonna take one more shot at this. Though I’m...

I’m gonna take one more shot at this. Though I’m really not sure why. I don’t have a dog in this hunt. I hardly ever make beads anymore. I make marbles, which sit in collector’s display cases and see...
Forum: Tips, Techniques, and Questions 2012-04-12, 7:55pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
Well I don't know anything about Grace Ma. So if...

Well I don't know anything about Grace Ma. So if that's what Mike's talking about I don't have an answer.

However I don't think the boiling to freezing idea is an invalid test. Sticking beads in...
Forum: Tips, Techniques, and Questions 2012-04-12, 7:08pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
Mike's original post didn't say anything about...

Mike's original post didn't say anything about subjecting the beads to radiation. And I agree, all this test proves is at best proper annealing. But again, the original question was "is the test too...
Forum: Tips, Techniques, and Questions 2012-04-12, 5:57pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
It'll make you feel better about your work...

It'll make you feel better about your work Flamingobeth. And if they don't pass, it's usually just a matter of increasing your annealing schedule.
Forum: Tips, Techniques, and Questions 2012-04-12, 5:55pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
There you go Elizabeth! I like it. Come to think...

There you go Elizabeth! I like it. Come to think of it, I often randomly test beads by dropping them on the floor too. Though I'm not sure "my husband randomly drops my beads" is going to help D with...
Forum: Tips, Techniques, and Questions 2012-04-12, 5:49pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
Inez, I agree, I wouldn't want to test all 10,000...

Inez, I agree, I wouldn't want to test all 10,000 beads. But then I can well imagine a surcharge for the test. It's not like making 10,000 beads is going to be "artistically fulfilling." We're...
Forum: Tips, Techniques, and Questions 2012-04-12, 5:21pm
Replies: 147
Views: 35,551
Posted By CD Lampwork
All right, I tried it. Cause let's face it, if...

All right, I tried it. Cause let's face it, if you don't try the test you're just talking out your butt (something I have been known to do). My beads passed no problem. Both were transparent so easy...
Forum: Tips, Techniques, and Questions 2012-04-11, 9:30am
Replies: 147
Views: 35,551
Posted By CD Lampwork
Okay, Mike's test doesn't seem that extreme to...

Okay, Mike's test doesn't seem that extreme to me. If we suspect a problem we stick the bead in the freezer for a few hours then quickly warm them up under hot water. We don't typically drop a bead...
Forum: Torch Questions 2011-07-16, 9:58am
Replies: 19
Views: 12,962
Posted By CD Lampwork
A dirty little confession on my part: I use to...

A dirty little confession on my part: I use to have this problem early on in my lampworking learning curve. Everything would be great, then the dreaded black haze, lines, etc, turn down the propane,...
Forum: Free Tutorials 2011-07-16, 9:53am
Replies: 1
Views: 3,484
Posted By CD Lampwork
I'm going to try this again. This is a really...

I'm going to try this again. This is a really great oportunity to watch us live, or one of our recorded sessions. All free. Tomorrow (Sunday July 17), 2pm CST Deanna Chase will be making on of her...
Showing results 1 to 25 of 45

 
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