July 18th 2018 Wed, 18 Jul 2018 Description Worm gear. New design to download and make. #papertoy #paperengineering #mechanism #maker (Find out more…) Related To receive new blog posts by email Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of new posts by email. This site uses Akismet to reduce spam. Learn how your comment data is processed.