I got mine on amazon for 3.66 with free shipping (amazon prime). Just a warning, its 5 feet of tubing, and it comes in a 5-6 foot long tube. My gf was not pleased LOL.
Here is the link:
Amazon.com: Stainless Steel 304 Hypodermic Round Tubing: Industrial & Scientific
I'm going to order the 24 gauge myself, as based on this thread that gauge will fit through the cup holes without modification. If I can get the same stability of electrical contact plus a little extra stability from the increased gauge, it'd be nice. If it doesn't work, not much ventured...
Here is the link:
Amazon.com: Stainless Steel 304 Hypodermic Round Tubing: Industrial & Scientific
I'm going to order the 24 gauge myself, as based on this thread that gauge will fit through the cup holes without modification. If I can get the same stability of electrical contact plus a little extra stability from the increased gauge, it'd be nice. If it doesn't work, not much ventured...