Small 4 cyl engine working
thingiverse
Small 4 cyl engine that turns with ease. Two sets of screws, one for the bottom end at 2-56x 1/2 inches long, the other for pistons at 2-56x 1/4 inches long. One can stop the print near the top of the sleeves and insert steel nuts to secure the head in place. The nuts are #2-56 hex nuts designed for this specific purpose. Update note: use crank 5 as it fits perfectly and prints without support material issues.
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