OK, 14,000 pieces would be a serious sized order. When you said "ornaments" I was imagining him trying to sell bags of them to local retail stores.
For that size order I personally would probably not cut them with the laser. I would either farm the whole thing out, or I would buy the wood already cut into circles. Their are sources for buying wood circles in that size.
The hole in most ornaments for hanging them can be drilled in a drill press, doing several at a time in a little fixture you make, or those could be cut on the laser at the same time you engrave. Using pre-cut circles would save a fair amount of time making the ornaments, and the edges would be clean instead of brown from lasering.
It also speeds up the whole process because you would make a pair of fixtures to fit in the laser to hold the circles. One that is holding the ones currently being lasered, and the other one is being unloaded and reloaded for the next batch. Plus the fixture can utilize the entire bed of the laser, while most thin woods come in sheet widths that only partially fill the bed (ie: 6" or 8" wide sheets) unless you use thin plywood, which usually costs more.
On the other hand, depending on the look you are after, you may want to clear coat the wood first, and that is easier to do with sheets than loose circles.
Lots of choices and trade-offs.
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