1 x full length of TAG Boro rod measuring 5-8mm dia x 510mm long
TurboCo is a highly saturated cobalt blue. Use thick as a
substitute for black, or thinner as a dark blue. Work TurboCo in an oxidizing atmosphere; reducing
may cause grey streaks. Note in the first image that the only reason you can see blue is because the curl is being held very close to a halogen bulb for this picture.