Pricing
 

A lady wants to use my longarm and buy the batting off of me, and using my thread, any ideas for what I should charge? I think she'll be doing a twin size quilt.

Personally, I would charge a minimum to cover the cost of your batting and thread (after all they are not free) and then charge by the hour to cover the wear and tear on your machine and the electricity.

I rent a machine and the owner helps...I pay $45 for the first 2 hours with $20 for each additional hour. She charges $6 per bobbin and charges for the batting, but I usually bring my own.

The shop I first purchased my longarm from required you to take a * Certification Class* where you learned threading, winding bobbins, cleaning, adjusting tension, loading ect. That class was $50 and you quilted a practice quilt ( 2 pieces of muslin + batting) after completing your certification you could rent machine time @ $20 an hour. Thread and batting were at cost.

Just me, but I wouldn't let anyone use my long arm. How much did you pay for your longarm? What if she breaks it? What if she hurts herself?

Personally, I would not let anyone else touch an expensive piece of equipment like that. No one ever takes care of your stuff the way you would. Not worth the risk.

I don't think this is a good idea. If she has never used your machine before, there is a learning curve and you would probably need to be at her side constantly. Some quilt shops do rent time on their longarm machines, but this is after you pay for a training session. I think I would refer her to a quilt shop.

...not worth the risk. Imho

I'm not sure I would let a novice use your longarm...too many things could go wrong. They are so touchy....
Personally, I would just charge her for you doing her quilt.

You didn't say a friend wanted to use it, just a lady. You could be sitting yourself up for lots of misery from a lady.