You can mount weights on pinewood derby cars in several ways. An easy way is to screw plates to the bottom of the car. Another way is to drill holes in the car, and insert weight into the holes.
But today we will focus on making weight pockets for tungsten cubes (or similar). This allows the pinewood derby car builder to create a very low-profile car and to focus the weight in one area.
To learn more about this technique, please read Pinewood Derby Times Volume 10, Issue 3.
Drilling
Figure 1 – Masking Tape on Drill Bit
Figure 2 – Drilling Holes
Chiseling
Figure 3 – Chiseling
Figure 4 – Testing the Pocket
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Maximum Velocity Pinewood Derby Car Plans and Supplies