[Q]: Objective: To join wooden planks together for a project, you can
[A]: Join the planks together with screws after pre drilling the holes

[Q]: Objective: how to fix a toilet that fills off and on by itself
[A]: A toilet that cuts on and off by itself, or runs intermittently, has a problem that plumbers call a phantom flush. The cause is a very slow leak from the tank into the bowl. ... The solution is to drain the tank and bowl, check and clean the flapper seat, and replace the flapper if it's worn or damaged.

[Q]: Objective: What is an important item to wear over your eyes when making a bicycle powered washing machine?
[A]: Safety glasses

[Q]: Objective: to assess if your refrigerator door seal needs to be replaced
[A]:
Put the dollar bill between the refrigerator door and refrigerator, and close the door on it. Then, try to pull it out slowly. If you feel it drag slightly, your gasket doesn't need replacing. If it slips out quickly or has moisture on it or mold, get a new gasket.