anyone ever try these?

[RAdams]

I tried to get some round med. bottles from my local pharm. but they didnt have any bottles that were any good as far as size.

I found these:

http://www.stevespanglerscience.com/product/1367


I don't think they are the same plastic as the med bottles, and i am afraid the PR will stick to the plastic, which would ruin a "test tube" with each blank.

that company also sells a little zinc sulphide kit (Glow in the dark powder) Even comes with a keychain blacklight which would come in handy for your booth!

http://www.stevespanglerscience.com/product/1586

 

[cnirenberg]

Ron,
Give the company a call and see if they will send a sample to you to try. This has worked for me in the past. The Doc has me on a variety of meds so I have a monthly supply of casting molds........

 

[djpnevans]

What do you what to use them for?
David

 

[RAdams]

to cast round pen blanks.

 

[TomW]

Doesnt matter if it sticks or not....you'll never get the blank out of the closed end tube. DAMHIKI.

This http://www.epinions.com/content_89651711620 is what I use. Also have used 1/2 inch PVC pipe from the borg.

Tom

 

[Fred]

IF the casting material you choose to use shrinks even a tiny bit I do believe that alone would allow the casting to be removed with little or no effort at all. If the material sticks to the molds sides then that is definitely a different story when using a closed end mold. A tiny vent hole in the very botton will assist with that problem

I agree with calling the vendor and see if you can get a sample for testing purposes. A call can't hurt all that much!