What are good ways to prevent mold growth in an AC unit?
Noticing some mold in my AC unit and want to know how to prevent further growth....
What do I need to learn before I can drive an excavator?
It may seem strange, but I have a dream of driving a big excavator and digging up huge amounts of dirt and rock. I'm not in the construction trade and have no reason to dig up dirt, but it's my dream all the same. I've operated a little bobcat during some home reno and that was fun, but it's small p...
How can one key open multiple locks?
My suite-style apartment has one lock on the front door and individual locks on each bedroom. However, each roommate only has one key that opens both doors. How does this work, having two keys that can open some of the same locks, but also individual different locks? Is it a feature of the lock or t...
Rubegoldberg zipline
Im a 9th grade student in an engineering class building a rube goldberg machine and i need to launch a marble from a ski lift/zipline type kinex machine onto a carboard track to knock over a trail of dominoes but we can't get the marble to launch off the cart accurately or even at all sometimes...
What is the tool that firemen use to test for natural gas leaks in a home?
Recently there was a major natural gas line cut, and leak in my neighborhood. A fireman came to my home to test inside for natural gas. He carried an electronic tool to tell him if there was natural gas present in my home. What is this tool? How does it work? ...
Robotic Laser Welding
What degrees of freedom or how many joints does a laser welding robot have?...
Benefits of Driving a Manual Car
My dad had me learn to drive on a manual car instead of an automatic. He also agreed to buy me a car, so long as it was manual. I like my car, and I think I’m good at driving manual, but I’m not sure what benefits come with it besides just being able to do it. Anyone have thoughts on thi...
