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Robonz wrote:Thanks Gary
You got it! The error is only .03mm or so but that is about 5% of a 0.6mm line width, if I calculate it right. My CNC is good for .01 if I hold my breath during the cut. Am I being too fussy? Before I commit the energy to make something I like to measure twice as they say. If this is the expected error then I will need to work the calculations out in Excel which I don't know how to do right now and am avoiding it haha. Its so much easier to click your button.
Cheers
Keith
Robonz wrote:Thanks Gary
You got it! The error is only .03mm or so but that is about 5% of a 0.6mm line width, if I calculate it right. My CNC is good for .01 if I hold my breath during the cut. Am I being too fussy? Before I commit the energy to make something I like to measure twice as they say. If this is the expected error then I will need to work the calculations out in Excel which I don't know how to do right now and am avoiding it haha. Its so much easier to click your button.
Cheers
Keith
Robonz wrote:ANDREW, if you don't mind checking what I have made to go with your system. It has one encoder slot 180 degrees from the start aperture. The attached pdf has specs.
Construction of the disc will be 4.5mm thick clear acrylic with black paint on the viewing side. The laser will remove the paint where the yellow rectangles are. This should equate to a super thin aperture say 50 microns of paint at a guess. I have made the apertures thin in the scan direction to hopefully gain some vertical resolution at the loss of brightness, I have a 30 watt led to make up for it haha.
Robonz wrote:I have ordered this light source on Ebay. It is 30 watts. I do not need to run it at full power of course. I have a really nice collection of diffuser material I can laser cut and put on it.
30W 4X CREE XM-L2 LED 12V
Robonz wrote:Construction of the disc will be 4.5mm thick clear acrylic with black paint on the viewing side.
Robonz wrote:Hi Guys, I started my build on an "Andrew Davie's Arduino Televisor"
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