Title explains it. I'd like to be able to crush 100 dullite when I have it. My grinder only lets me go up to 30. With making food or selling or buying we can choose a number, why not with a grinder..?
I definitely was going to include as a suggestion that we need a way to do type-able amounts for everything. Crushing isn't the only one that is missing it. Giving and Smelting come to mind, but I'm sure there are more.