platform jack remix

i remixed this to fix the problem with the printing of the upper parts that need support to keep from sagging and stringing.and bending etc. the supports/braces are meant to be be broken off after printing. but only the middle one need to actually be broken off.

a note by maker ssvenn:
use a large brim to make sure it doesn't detach during printing.

i made 2 versions:
1 without a hole in top and bottom, and another with holes. i also made holes in the top and bottom to lessen print time and filament waste.