I see nothing wrong with what you want to do. The problem as I see it is that you are ill prepared to do it. You need money to be a sucessful supplier in most cases. You generally would need more than one slow engraver.

If you are sure it will work, borrow the money and do it right. If you are not sure it will work, grow your business slowly and take the big step later.

Both ASI and SAGE provide a means for their distributors to rate suppliers. If you are late with your production schedule or fail in other ways to be fast and competitive, the distributors will give you bad ratings and when that happens very few will do business with you. So you have to be prepared to compete not only in price, but in reliability, customer service, and product quality.