ecu.edu site gone?

[Greymatter Glass]

Hey... um.... anyone know why ecu.edu took down the sci glass blowing pages? I need a formula for silvering solution, they were the only ones I knew of online to list the stuff needed.

[medicatedMELTDOWN]

Hey... um.... anyone know why ecu.edu took down the sci glass blowing pages? I need a formula for silvering solution, they were the only ones I knew of online to list the stuff needed.

That sure is weird. I had just been browsing that site 2 or 3 days ago and now it's gone. Here is the info I think you wanted and the chart at the end:

Silvering - this demonstration requires more preparation than most, but is a good way to incorporate a little "chemistry" into the lesson plan. This demonstration has been successfully given to students in the 6-8 year old bracket, but may be better suited for those a little older. The amount of technical information given may vary quite a bit depending on the age group.

Suggestions:

Glass preparation:

* Have students blow bulbs. Use same basic instruction as in Blowing Bubbles.
* Use 19 mm medium wall tubing - try to "target" a bulb about 25-30mm as your objective. Do not blow thin bulbs for this demonstration!

Silvering:

* Prepare silvering solution mixtures before-hand (Brashear process).
* Protective clothing a must. Eye ware, lab coat, and latex gloves! Why?
* Have students add proper pre-mixed solution mix to bulb. Use recommended Brashear process steps. What chemicals are being used?
* Complete silvering process by placing and shaking bulb submerged in a warm water bath. What type of chemical reaction takes place? Variables?

This demonstration requires assistance - and works well in breaking up the class into two groups, maintaining interest levels over an extended period of time.

[Greymatter Glass]

pretty much. I am using a different technique that uses less silver.

thanks

[jiminyrootkit]

http://www.ecu.edu/glassblowing/gb.htm
the bookmark i have works......i'm assuming there must have been more to it than i'd looked at?
-f