make sure your image is in focus and square, there are tips on this in the link I mentioned earlier.
measure the width of the image (a cheap harbor freight digital caliper is perfect for this), do not measure the height, always measure one dimension and calculate the other.
lets say as an example that the image width measured 70mm
for a high def projector (1080 x 1920) do this:
divide 70 (the width in mm) by 1920 (the projector width in pixels)
this gives you 0.03645 Which is also your resolution (0.03645 mm, 36.4 microns)
multiply 1080 (the projector height in pixels) by 0.03645
this gives you the image height 39.375 mm
In CW (Build Size mm)enter 70mm X and 39.375mm Y and a slice thickness of 0.0364 (in Slicing Profile, I round to 4 decimal places)
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for a low def projector (1024 X 768) with a 70mm image width:
divide 70 (the width in mm) by 1024 (the projector width in pixels)
this gives you 0.0683 Which is also your resolution (0.0683 mm, 68.3 microns)
multiply 768 (the projector height in pixels) by 0.0683
this gives you the image height 52.454 mm
In CW (Build Size mm)enter 70mm X and 52.454mm Y and a slice thickness of 0.0683 (in Slicing Profile, I round to 4 decimal places)
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CW should take care of the rest.Statistics: Posted by HTL — Mon Sep 14, 2015 7:47 pm
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