To imprint opposing bite and fabricate other dental appliances like sports mouth guards, bleaching trays and orthodontic appliances, retainers and Indirect Bonding Trays.
That's not how the steel balls are used LOL You use those when you only want to form PART of the item. You bury the item in the balls, covering up the part you DON'T want to mold otherwise you work directly on the other screen no balls needed...
The loud music is absolutely irritating. Cannot hear what the speaker is saying because of this irritating music. A silent background should have been ideal