I have a client that does cut-vinyl for some lettering which can be any size the customer wants.
They also use particular fonts to do lettering with rhinestones. The rhinestone font sizes need to be fixed.
Is there a way to have some font-sizes be controllable by the customer and have other fonts render at only a fixed size?
Unfortunately this is currently not possible. If this is a feature you need you can hire us via www.fancyproductdesigner.com/customization-request