A Digital Printing Network
I'm not sure why, but I'm not comprehending something for some reason. It seams like this should make sense, but it's not.
Here's the scenerio...
I have a piece of 12"x24" acrylic that I need to cut 2 shapes out, but I need to raster something on the top. I don't want to burn the tops while cutting the acrylic, so I mirror the shapes that need cutting. After cutting, I flip the piece of acrylic around the same way I mirrored it, put the cut out pieces back in like a puzzle, and then raster the other image on top. This SHOULD align correctly in my eyes, but it doesn't. I don't understand why.
Take to items, lets say 2 rectangles(outline red for cutting). then in the top right of each rectangle, put a smiley face(colored black for rastering). Now mirror vertically the 2 rectangles so you can cut from the back. Once cut, flip the whole peice of 12x24 acrylic over vertically and put the pieces back. Now raster the little smiley faces. In my mind they should be rastered in the top right like we placed them in the graphic, but the don't line up correctly.
At first I thought it was because when I mirrored the shapes, I didn't include a 12x24 box around them to simulate the acrylic. I'm asumming that when I mirror the shapes alone, they were be mirrored on the center of the verticle axis so it wasn't accurate. I tested this out by making one big item close to the top edge and 1 small onefar from the bottom edge. Highlighting them both and mirrorroring them should me that they mirror on their axis, so that was one reason I was off.
Then I thought to include the 12"x24" box so it mirrors in the center at 6", that way when I flip the piece of acrylic over, everthing should match. It still didn't work.
I hope this makes sense because my head hurts now. It seams so simple, yet I can't get it to come out like I thought it would.
When vector cutting materials such as Acrylic, its quite risky as they are flammable as you may already know. I use a 40watt laser engraver from Epilog. I have times when i Vector cut through 3-10mm acrylic at 100power and 3% speed 5000frequency. To avoid flaming and damage to the acrylic try laminating or covering the acrylic with adhesive backing paper and spray water over it, i use this method with 10mm acrylic and get perfect results with the 100power flaming the rough edges.