That's a lot of stop/start for the machine,
Even thou someone does you a favour by not charging you, his/her time to draw, program and set up
water or wire cutter time alone costs a lot more than US$100
Turret (metal) or router (wood) is probably the cheapest way to go if you want to go thru cnc way,
sandwich the foam between 2 sheets to keep it steady and put it through the machine,
Or get a drilling template made up and you can drill them out in your spare time.
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