Tube power (40,60,80W etc) is one factor, cutting speed and optics (focus) are others that are just as important.
A 40W laser with quality optics would be capable of cutting 1/4" hardwood in single pass at a reasonable rate, whereas an 80W with a larger spot size may result in more burning and a less desirable cut at the same speed.
There are trade offs, for example a smaller spot size and therefore more power density will have a shallow depth of field making focus more critical and cutting depth limited. So you have more power to cut at the focal point but it quickly loses power due to the beam incident angle. You probably want to get 50-65mm focal length optics for your application.
Engraving acrylic, or even cutting it is a relatively simple task. The material vaporizes rather than melts and is ideal for laser cutting.
I would suggest a 60W tube, as a good balance between cost and performance.
As with most of the Chiinese companies, their websites are not what you are used to with US brands. They don't spend a lot on advertising or marketing which is one reason the prices are lower. If you send them e-mails they usually have technical datasheets or other information to share and will provide quotes including shipment to your location. It is also the best way to see how responsive they are and ask questions. As I said before, getting a quote from the US re-sellers is a good idea for comparison.
Zax.  |