Passata machines

I wouldn't use one. I cut tomatoes in half and remove a minimal amount of core as the skin is attached to this. Then They are put in a pyrex dish in the microwave till the flesh softens and a straight edged knife can squeeze the pulp out. This doesn't remove the seeds.
I find alicante are about the easiest variety doing this for plenty of juice. Orange banana skin well also and have more flesh.