A Tabletop Demonstration Railgun

Intro Theory Construction
Power Source Rails Projectiles Injection Our Results Go To
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The first rail design consisted of two copper bars, about 3/8" x 1/2" x 7", screwed down to a 2x4, with a channel cut out for the projectile to slide down (pennies at the time).

Figure 4: First Setup
We then moved to bolting the same rails down to a piece of plastic on the final design. The projectiles slid better on the plastic, and it was easier to make sure that everything is square and level.

Figure 5: Final Setup
Copper was used for the rails because its low resistance would help give us a larger current. The rails are showing some erosion, which could become a problem after several shots.

Figure 6: Eroded Rails