by schlem, published
CRAP! This means I have to learn another CAD program (which probably isn't too hard or bad news), but Tinkercad worked really well for me.
The Tinkercad shutdown timeline will be:
Effective immediately we have closed sign-ups for new users
April 30 2013 – All free accounts will be changed to read only
August 31 2013 – All academic accounts will be changed to read only
December 31 2013 – All paid accounts will be changed to read only
June 31 2014 – Read only access for all users will be discontinued