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→Step 4 Building the Gears
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====Step 4 Building the Gears==== | ====Step 4 Building the Gears==== | ||
Use the gears of the Lego parts. The detailed pictures showed below. | Use the gears of the Lego parts. The detailed pictures showed below. | ||
[[File:laser_step7.png|600px|]] | |||
The purpose of building up gears is to slow down the movement of laser. One can assemble | The purpose of building up gears is to slow down the movement of laser. One can assemble | ||
the right gears to achieve a high gear ratio. The higher the ratio is, the better quality will be, | the right gears to achieve a high gear ratio. The higher the ratio is, the better quality will be, | ||