Physical Science Lab

[haven chuck]

Wow ichaelm. That is REALLY good!

[ichaelm]

Thanks! And it's kinda, umm, idk how much I can tell you about my design (if you're going to Solon invites you'll see it), but mass is nearly EVERYTHING. Try sanding down the CD, and use really light materials for blades, like plastic plates. Sometimes making it smaller will drastically improve your score, because of mass. Double the mass = half the voltage, and half the mass = double the voltage.

[Pleiades]

...Try sanding down the CD....

how does one do that? do you use just normal sand paper? i didnt know that would work.

[ichaelm]

...Try sanding down the CD....

how does one do that? do you use just normal sand paper? i didnt know that would work.

Yep.

[Pleiades]

did you notice a change in mass? i went on an adventure in my garage and found some sandpaper [never knew i had any] so i got a CD and started sanding away. The mass of the CD increased by a gram. I didnt notice any change in the width of the CD.. all that happened was the paint and the shiny stuff came off. I guess i need to sand more?

[haven chuck]

We used very high grit sand paper, sanded for like 30 minutes, then cut the edges off, and finally smoothed it out will low grit sand paper. It took over an hour for the whole process, but it really decreased the mass.

[Pleiades]

is 60 high grit? that's what i'm using.

[jweil_buddha]

im not sure but 80 worked for me so probably

[haven chuck]

Yeah, i think we used something around 60.

[ichaelm]

BTW, you wanna sand on the flat side, not the edge. That's what you're doing, right? Just making sure.