This may have been done before but if you make 2 platforms with a hinge on top of each other, and make one horizontal and one vertical, and then join the corners up with invisible bars, you make a 'turnstile' object which is quite fun to play on.
I tried to adapt it to make some primitive gears but haven't perfected that yet http://www.pontifex2.com/iB_html/non-cgi/emoticons/rock.gif" border="0" valign="absmiddle" alt='???'>
I tried to adapt it to make some primitive gears but haven't perfected that yet http://www.pontifex2.com/iB_html/non-cgi/emoticons/rock.gif" border="0" valign="absmiddle" alt='???'>