Chch004 [2021] -

// Finger Grip Grooves (Side notches for easy handling) for (i = [0:30:360]) rotate([0,0,i]) translate([diameter/2 - 3, 0, 0]) cube([6, 4, height + 2], center=true);

The correct answer for the crossword clue " Helpful piece " with the identifier Why "HINT" is Correct chch004

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