This may be a stupid question, why are you ordering
stock Gobos?Generaly you just order gobos from the show budget and only order the ones you need that are specific to the show. There are two reasons for that.
1 you may buy a whole
stock of what you think you need but you didnt buy the one you really need but now your out of budget.
2 Gobos
DO NOT last a long time. They will burn out
decay, untill they are useless. This can happen in 1 use or a year of use it depends on the way the
fixture is alligned and so on and so on. But why end up needing this
gobo but have no budget to replace it well you have tones of other ones but they all arent the right
image for the show.
these are just some reasons mabey they havent occured to you yet. or they have and it doesnt mean anything to you who knows. its just like buying
gel most places keep stocks of the standards like a red, green and blue but they dont go out and purchess the whole apolo catalog that would be silly. they order what the show needs. because its an expendable. you toss gell just like you eventualy toss gobos.
the above comments apply to metal gobos not glass but glass has its quirks too.
JH