cnc laser buildlog

The recent Epilog Laser Challenge at Instructables. com got me thinking about building a low cost CNC laser. The engrave r they had as the prize had a list price of about $8, 000. The income tax on that would be quite a lot. I thought a larger more powerful machine could easily be built for less than the amount you would have to pay for the tax. The
cnc laser buildlog - schematic

Epilog Zing 16 is 30W with an area of 16" x 20". Try to beat that for less than $1, 000. I understand that a huge part of what you get from Epilog is software, safety, support and a guarantee, so it is not a really fair challenge. I want to approach this in a very serialized manner to prevent wasting excess money or time. The design should be very scalable to more powerful lasers. I will start with the lowest power laser as a proof of concept. I have built several successful CNC routers from scratch so I feel confident on the mechanics. The laser issues will all be new. There is a lot of mystery on the Chinese parts. I will try to fill in all I can along the way.

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