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GUYS! I think found out the secret.
You just use a plain piece of glass instead of a real GG and a 10x loupe when you're doing macro work! You can't see the image without the magnification, but once you put your loupe on the glass it's absolutely crystal clear.
The normal GG couldn't resolve the super fine details required to get proper focus at this level of magnification. This problem was a major roadblock for me. I was basically taking my best guess to decide on critical focus.
I put my fresnel in front of the clear glass, and it produced the most amazingly clear and bright projection I've ever seen! Very cool.
Now I just need to source/order a super high flatness piece of glass, and I will be set.
