<p>My model layers are printing much as I expect but the parts when removed from the plate are very soft and flexible and fail to harden any further in sunlight or UV lamplight.  A tall or slender part will bend and distort under its own weight while printing.  I am using LCD-T resin, I have increased time and reduced thicknesses and am now using 0.04&nbsp;mm layers at 20&nbsp;s and 255 brightness with no improvement.
Can anyone suggest what I need to change?</p>

You can specify variable values from command line using:
```
openscad     ...\
             ... \
             [ -D var=val [..] ] \
             ... \
             ... \
             filename
```
See the
OpenSCAD Manual
.