One of my friends works at a company that supply's fibreglas and ground tubing for the data/telecom industry.
I will ask him if they stock the stuff.
DSLI_jon has a point.
I don't own a 3K cambridge set with high quality mirrors... my Dichro's are the new Laserwave dichro's so again not 300$ dichro's
I am planning my build to be under 5Watts so no "look at my bigballs" mega power level Cubr's or laserscopes.