laser_rotary_attachment
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| Finally, if your stock is not perfectly cylindrical (e.g. a tapered pint glass), you will also need to scale the width of your image. The simplest way to do this is to measure the diameter in the center of the area where you will engrave your image. If the stock diameter at the rollers is d1, and the stock diameter in the center of the etching area is d2, scale the width of your image by d1/d2. So, for example, if your stock has a 4" circumference where it rests on the rollers and a 3" circumference in the center of your etching area, you will want to widen your image by a factor of 4/3. You can easily do this in Lightburn, but remember that if you have rotated your image, then you will want to scale the HEIGHT in Lightburn. | Finally, if your stock is not perfectly cylindrical (e.g. a tapered pint glass), you will also need to scale the width of your image. The simplest way to do this is to measure the diameter in the center of the area where you will engrave your image. If the stock diameter at the rollers is d1, and the stock diameter in the center of the etching area is d2, scale the width of your image by d1/d2. So, for example, if your stock has a 4" circumference where it rests on the rollers and a 3" circumference in the center of your etching area, you will want to widen your image by a factor of 4/3. You can easily do this in Lightburn, but remember that if you have rotated your image, then you will want to scale the HEIGHT in Lightburn. | ||
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| + | For larger images, you may want to distort the width of the image gradually across the entire image. This can be done using the Envelope feature in Inkscape. | ||
| When you are done, change all of these settings back to their original values (other than the Workpiece Diameter or Circumference). Then //__**turn off the machine**__//, unplug and remove the rotary attachment, and raise the bed back up so that the next person can use the laser for cutting or engraving flat stock. | When you are done, change all of these settings back to their original values (other than the Workpiece Diameter or Circumference). Then //__**turn off the machine**__//, unplug and remove the rotary attachment, and raise the bed back up so that the next person can use the laser for cutting or engraving flat stock. | ||
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| + | Settings: | ||
| + | I found a speed of 100 and power of 20 seemed to work well on the pint glasses I was using to test the rotary. You may also want to wipe your piece with a wet piece of denim (or paper towel) to remove any tiny bits of glass still clinging to the piece. | ||
laser_rotary_attachment.txt ยท Last modified: 2019/06/08 19:11 by 24.158.60.179
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