I'm thinking about selling the next knife design in a different way. 

People will opt in to an email list by paying $50 down to get on the email list.  As knives are completed the paying customers on this email list will sequentially be given an offer to purchase.  If the first person chooses not to purchase, the next person on the list will be given a chance to purchase the knife, and so on and so on.  When a purchase has been made, that customer will be removed from the email list.  If a person chooses to purchase a given knife the $50 USD paid to be on the email list will become credit towards the purchase of the knife.  This email list does not guarantee you a knife.  This email list is not a prepayment for a custom build.  This email list is a maker's choice, with an offer to purchase.  I'm still figuring out all the details.  It is only a concept at this time.  I will only open the list, once the 2nd knife design has been prototyped.