Geologyhound
Well-known member
On the regular 9 inch coil (first picture over the sink) the coil ears have two notches which fit the notched insert on the side of the thumb screw. On the 11 X 13 coil, the coil ears have no notches (second picture over white background), but the insert is still notched and doesn’t quite fit into the coil ears hole except for about the first millimeter “collar” at the tip. Do you just rely on the compression of the thumb screw to force the insert into the coil ears to secure the coil to the rod? Forcing anything makes me nervous. Is this normal?