Regarding the visible mesh artifacts, as mentioned, this sometimes is the result of enabling smoothing in render settings. You can turn smoothing off, but it isn't always necessary.

Visible mesh artifacts are often due to failure to adjust Ray Bias correctly.

Now I'm going to bring up something I seem to have to do over and over and still the number of times it gets through is near zero. It's in my signature just to make sure - but nope I have to bring it up.

MY DISPLAY UNITS ARE INCHES

When you recreate my shaders, you must be set to inches. If you are not, then you're not storing the same numbers that I am.

In my case, for example, I gave a Refract Ray Bias of .1 - but what did you give? Did you type .1? Are your units inches? Suppose your units are centimeters? Then you typed .1 centimeters which is 2.54 times smaller than my .1 inches.

This is what I get when I type in .1 with centimeters as my Poser Display Unit.

Does this look familiar?

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)