Unlimited access for Mach 3

Can anybody tell me how to go about buying the unlimited code. My machine is stopping at 500 lines which I know is the max for the demo.

You can contact Langmuir support (support@langmuirsystems.com) and have them create an invoice for the upgrade. Or you can head over to the company that makes mach 3 and order the upgrade via thier webstore http://www.machsupport.com
Either way once the payment is processed you’ll get a key to unlock the software.