Grade 4 build a working crane Help!?
I would use about a 2 foot piece of broomstick pinned through a hole in one end. Maybe 2 to 3 inches away, a larger clearance hole with a 1/4-20 nut glued under. Use a lo-o-ong 1/4-20 bolt as a driver. (1/4-20 is 1/4 inch diameter with 20 threads per inch.) I leave the mounts and string up to you as to encourage your participation and creativity.
Simple crane? Get a spool, maybe one from sewing thread. Attach it to a small base so that it can rotate freely. Put a pencil through the middle tight enough so that when the pencil rotates the spool rotates. Glue a tab on the end of the pencil at a right angle to the pencil so you have a handle. Attach string to the spool and then maybe a ruler or stick to a base lined up with the spool like a crane. Put a couple of eye hooks on the stick and feed the string through so it hangs down at the end of the stick, like a crane cable. At the end of the string put a springy clothspin so that when you pull the string the clothspin opens and closes. Now you can lift and lower the clothspin by rotating the spool with the pencil. Pulling on the string opens the pin to pick up things.
