Great addon laser with an affordable price
We do many engravings and sign work. My machines all all stretched versions so we can have a large work area. We purchased the 20w add on for our OLM3 since they are nowhere near a release of their own. We needed the extra power for one and two the need to keep the performance of the same size beam for engraving (and also poor customer support from OLM). This add on covered both of our needs! If/when Comgrow comes out with a stretched frame, I so far can say it may be in our future. We have a smaller laser 400x400 and use the comgrow enclosure too it's also great! We like the addition of the remote power switch we have moved it to a position outside of our custom enclosure. It makes it even safer incase of any problems. It burns clean, cuts very well and engraves on MDF, maple, oak, pine, acacia and slate very well. Of course you need to get quality materials for your work but having a great laser is the backbone of any business. It's affordable and just engraves beautifully. The only real cons I have are this, the window to see the laser is very small. It would have been nice to have a larger view since it makes it a little difficult to frame and second, the directions were not quite clear for assembly onto another manufacturer frame but with a little thought it is possible to figure it out. Very good laser at an affordable price! If we could add photos of my engraves, we would gladly show you them.