Engraving Wine Glasses

[Amos De Pasquale]

Some time ago I received very helpful advice on how to figure out settings for my Rotary Laser Engraver, was able to put that into practise today, comments and advice always welcomed, Amos. http://i1213.photobucket.com/albums/cc466/WoodenInk/Engraving%20Wine%20Glasses/EngravingWineGlasses1_zpsbd742932.jpg http://i1213.photobucket.com/albums/cc466/WoodenInk/Engraving%20Wine%20Glasses/EngravingWineGlasses7_zps17164599.jpg

[Ron Thompson]

Amos, these look good but you do know that it's 2013

[Bruce Dorworth]

Amos, those are some of the best I have seen!! What wattage laser do you have, what settings did you use? Did you you color fill the engravings afterwards?

I agree with Ron, you do realize that it is 2013 don't you, or did you just use old glasses?

Bruce

[Amos De Pasquale]

Ron and Bruce, the customer had a special request for a gift, that is why the 2004.
The laser Engraver is an OmniSign Pro 3000 with an 80 Watt tube; however the settings are hard to describe, why? because there is a ten turn potentiometer on the main panel, so if you set the power to 50 percent, it will depend what setting the manual potentiometer is set to, to determine the true power!!!, usually I leave the potentiometer in a set position, and alter the power via the software(Lasercut 5.1). I had a practise glass and set it to a point where the minimum amount of power gave a good engrave. Amos

[Mark Sipes]

Just a suggestion, since I don't know how the art was prepared. Fill the lettering at 70-80% black @ 500 dpi, that will eliminate bubbling and glass shards on the champagne glass. Gives it more or a sandblasted look.

[Dan Hintz]

Fill the lettering at 70-80% black @ 500 dpi, that will eliminate bubbling and glass shards on the champagne glass. Gives it more or a sandblasted look.

I'll second this... and suggest 70% at something closer to 250-300dpi. I see some major chipout in that pic, and this change in settings should eliminate that.

[Amos De Pasquale]

I prepared the lettering in Photoshop on a 1200dpi Bitmap setting, I just selected the font and size then imported it to Lasercut 5.1, when you say "fill" do you mean making the Bitmap setting say 250dpi and then reducing the amount of black, or are you referring to a process that I am not familiar with??? thanks, Amos

[Scott Shepherd]

Amos, they are referring to using something other than a all black setting on the text. Make the RGB something like 37,37,37 instead of 0,0,0.

I have no idea how lasercut deals with that, so it might or might not work on your setup. In other systems, what that does is causes dithering of the color, so it's moving the dots further apart, which makes the engraving look more uniform.

[Amos De Pasquale]

Thanks Scott, I will experiment with that, Amos

[Amos De Pasquale]

I have tried a lower DPI, and tried adjusting colour as suggested, however, there was no appreciable difference, I did try lowering my power setting and that helped a bit. I need to be pointed to where there are some detailed instructions on this matter, and will try to read and do what I read. There may be thread somewhere, so if you know of it, please point it out, thanks in advance, Amos