Tiny bubbles are so, so frustrating. They can come from trapped air, but sometimes it seems the pasta machine, itself, is causing them. If you just can’t get them worked out, consider that your clay might be too soft and sticky.
If the clay sticks to the roller more than it does to itself, the roller will lift tiny bits of the clay, making these tiny bubbles. Try leaching the clay.
What is leaching? That’s when you use paper to blot out some of the clay’s oils. If you’re new to leaching, this article explains how. Yes, leaching is part of conditioning, too. You have to make the clay easy to use, or you’re just going to face frustration.
You can also try skipping the pasta machine when you’re making your final few rollouts. You’ll have better results and fewer tiny bubbles with a hand roller.