Here’s a really excellent opportunity to win an Ultimaker 3D Printer and print filament! GrabCAD Ultimaker 3D Printer Toy Design Challenge, May 8th-June 5th:

What kind of kids’ toys can you make with the Ultimaker 3D printer?

Ultimaker is one of the best-known and best-selling 3D printers on the market. Many people use their Ultimakers to create toys for their young ones or friends. We want you to be creative and have fun creating your design! Basically toy around with your thoughts, put them into CAD form, and then submit.
We have lots of prizes! You can win your very own Ultimaker and limited supply of free PLA to CAD (or download) so you can create to your heart’s content.

Requirements

• Model parts should fit, be scaled to or be cut into sections of no greater than 21 x 21 x 21 cm.

• Your submission should be in STEP or IGES format. Other formats are not accepted.

• Assembly can be via snap fit, bolts, screws or glue. See www.ultimaker.com for more information.

• The model has to be 3D printable.

• Entries will be judged based on creativity, feasibility in 3D printing on Ultimaker, and overall coolness.

Rules

• The challenge is open to everyone except GrabCAD and Ultimaker employees.

• Team entries are welcome. In case of team win, prize will be transferred to team leader who is solely responsible for sharing it among team members.

• You can submit several entries.

• Only entries uploaded to GrabCAD library through this challenge page here will participate in the competition.

• By entering this competition, you
  
  1. Warrant that the work is your original work.
  
  2. To the best of your knowledge, it is not, and has not been in production or otherwise previously published or exhibited.
  
  3. Neither the work nor its use infringes the intellectual property rights (whether a patent, utility model, functional design right, aesthetic design right, trade mark, copyright or any other intellectual property right) of any other person.

• Applicants are not entitled to any compensation or reimbursement for any costs. The applicant’s participation shall not constitute employment, assignment or offer of employment or assignment.

• Tag your model with “ultimaker”. Only entries with valid tag will participate!

• This Challenge starts on May 8, 2013 and ends on June 5, 2013, at 11:59pm UTC.

• Only 1 prize per person.

• Winners will be announced latest July 5, 2013.

• The contest sponsor has the right to promote the winning entries.

• All entries must be submitted publicly and awarded entries become the intellectual property (IP) of the Challenge sponsor.

Read more.