Questions about Brother FS40s

Basically yes. But with 5 layers of denim and then it's definitely over.

The Display switches on when you switch on the machine. At least that is what mine does. It is not a bright light, rather just the display of the numbers. Hope that helps

Yes, you can and it works great!

I don't know. But I always put a crochet hook in it, problem solved.

Unfortunately, I have to inform you that none of our suppliers have the Brother SE600 in their product range, which is why we regretfully cannot offer it.