I have the opportunity to buy a 29-4 for $200.00 from a gentleman who was a saddlemaker.  The questions I have are these. I'm sure they have been asked and answered but I  need to know what real world thickness of leather can this old girl sew? I know from reading she should do a double thick 4oz, am I correct? What type of projects will I be able to effectively tackle? Aside from the obvious, how is the learning curve? What will she eat??? Please if you own one of these help me decide if its mo