by Techgraphix » Tue Jun 02, 2015 5:22 pm
Let's say it this way: almost every engraver can cut. But not every cutter can engrave: the problem is the controller and software. Some try to control the laser with a controller that's meant to be used for routers etc.. Mach3 is an example, although there are some people that managed to get it making engravings and quite good too..
For engraving you need not too much power, let's say 20-80W. for cutting, you need more power: 30 Watts can cut 3mm acryllic sheet quite well but if you want to cut thicker material you need more power.. 60-80W is good for both applications. (CO2 lasers)
And then the lenses: for cutting you need longer focal lengths then for engraving.. in fact: for cutting, longer is better and for engraving shorter is better. 50mm is a focal length that is widely used for both cutting and engraving.
Kees