There's a certain good point to the premade tubing argument right now.......... For just color tubing (no dichro) I like making my own. Using 50x3.5 instead of 50x5 each piece looks a lot more dense too, the 50x5 washes the color out a little bit when you pull it down real good and the 50x5 is what most people use because its thicker...... Strangely the wag tubing that EU sells uses medium wall INNER tube but that doesnt help the outside wall which is what actually matters........
Here's how I see it, 2/3 clear ($2) 1/3 color ($10) Oxygen/propane/kiln ($1) for a 1# vac stack............ $13 and about 40 minutes start to finish in time aint too shabby versus $50-$70/#++ And I get to pick my own color combos =)
i'm confused. seems you are doing the same thing as them.
having a thinner inside wall allows you to reduce you work down smaller while still keep it somewhat thinner and maintaining the 'depth' on the outside with the thicker walled. the only reason for the clear on the inside is to hold the color while pulling it.
if you are 'washing your colors out' you are blowing it too thin.
you gonna do some "fire and ice"? or "fade-to-clear"?