I have been making displays out of aluminum tubing that I cover in
shiny, black heat shrink tubing. The problem is that I only can find
it in 6" lengths. I buy it at Radio Shack and have tried to get
longer lengths there, at Grainger’s and many, many local electronics
stores both independent and chains. I have also tried Micromark,
from whom I get the aluminum. They only carry clear shrink tubing.
Anyone have a solid lead as to where I can get shiny (not matte),
black heat shrink tubing with no lettering for 1/8" (3mm) tubing?
Nothing else seems to work, paint is uneven and wears out quickly and
blackened or oxidized metal isn’t shiny enough and eventually
scratches. Thanks in advance,