First off Welcome to the forum Sean1
You can set Epson Print CD software to go from 70mm all the way out to 120mm outer diameter
and 18mm to 50mm inner diameter. Ok you said that you was using a Epson Artisan 700 so I take
it you have version 2.00.00A Print CD or above if so then look up to the top where it says New, Open,
Print, Save, and then Diameter.
Click on Diameter first then the Inner/Outer Diameter setting box will pop up make sure it is set on
Custom CD/DVD then click on the up or down arrows on the Outer Diameter then click on Save Settings
then click on OK and you should be good to go from then on.