Well, I finally got my laser. 30w versalaser 300. First day, while trying to do marble, I was in the focus area of the control panel and I clicked near 1" x 1" area to move the head and the thing went nuts! the cariage came all the way forward and kept banging into the front of the machine! Then went all the way backwards and did the same thing. This happened twice. After that, got severe scratch lines horizontally on marble etchings. Seems to have stopped now thankfully!
Anyway, marble is my passion, and from reading the posts here for the past couple months, it seems some have great success and do fine, while others seem to have to give up as they just can't get it. I want to get it! It seems most complaints are based on grey scale. I am not having a problem with white images on lasersketch marble. I am, however, having a horrible problem with graininess (Is that a word?). I'll try to attach this photo so you can see what I mean. I use photograv, scan the image at 250dpi, convert to greyscale in photoshop and adjust contrast/brightness there and save as 250 dpi 8-bit greyscale. Process in photograv with new param sets from cd for black marble. 30% power and 50% speed on the 30w is what ULS recommends and I use. I have tried at 500 dpi but looks to washed out. Any advise would be greatly appreciated.
Now lets try to upload this file