Ferris Wheels – Instant Challenge Setup
These are are by far the most difficult and time consuming builds I have tackled to date, but they have been well used, and look pretty impressive! They worked very well for the team training day we used them for for Destination Imagination in Louisiana, and they have been used at several team manager and appraiser trainings since then.
Unfortunately the wood has warped quite a bit due to the storage situation (non air conditioned storage unit in Louisiana), but they stood up for a long time. I think painting or staining these would have prolonged their un-warped life time by a few more years.