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We are planning to operate the gripper part of our robot arm using pnumatics. To do this we made a small homemade air tank. Can anyone tell me if this will be problematic? Will this disqualify my becuase of safety concerns that I am not using a comerically made cannister? Perhaps someone can point m...

Is wood ash considered an organic granular material?

That does not answer my question. I will be playing a harp and want to play some notes higher or lower than the allowable range, will I loose points??

Am I reading the rules correctly. If we have arranged our pieces to make the most of all the notes we are able to play...but in so doing play notes out of the allowable range...we will loose points? What is the point of making an instrument with a large range...when you cant even utilize the broad r...

Can anyone point me to where I can buy lab aprons and goggles that fit the requirements for this event? Also, will the same aprons and goggles fit the bill for forensics?

What is "granular organic material"? Could we use marshmellows ?? Or would they need to be ground up into a "granular" marterial?