Finally got around to reading this one...
Echo what Gary said
Then I'll add this:
You need to do what my dad did in 1966, which was just go out and buy an engraving machine (laser in your case) just because he wanted one. He had no plans to make anything but a couple of bucks with it here and there. He bought simply because he loved to engrave! With that mind set, there were never any stress issues with whether it made enough money or not. It was a hobby, and it was another monthly payment, which he could afford at the time. He never looked for work, it always found him, via his old Litton co-workers mostly. Simply because they knew he had the machine...
Next year is our 50th anniversary. I started doing this full time in 1975, and it's been 'my baby' since 2007. And after 50 years in this business, just like in the beginning, we have still never had to look for work. Our number in the phone book is the extent of any advertising we ever did.
So my advice is, eliminate the stress of worrying about making money. Just think of it as 'something you owe yourself', like a boat or an RV. If you can afford the payments, buy it! And have fun with it! Get the hang of your new toy, and do a few freebies for your friends, family and co-workers. They'll start talking, and your phone will start ringing...