The Gummer is a hand sled built on the general plans of The Jumper, and it is called a gummer because it is somewhat similar to the ones used by the men known as gummers who live in the forests and make their living by collecting spruce gum for children and sales- ladies to chew.
The swiftest bob-sled … . This fast bob-sled is neither so simple nor so crude as the rustic jumpers described some time ago, and it will test your skill to build it properly, but with all the plans and measurements before you the task should not be too difficult for even a boy who can handle tools.
Isometric and plan view drawings of a stand for stereo speakers. DXF Format
One of the great joys of telescope making is grinding your own mirror. Now days it is easier to buy finished mirrors than grinding kits to make them. Still grinding your own mirror is a key skill that makes you a real telescope maker. To do it, you need a mirror grinding stand.