Simply load your icicles into the end of the fluted tube that's been inserted into the stacker. Tap the base of the stacker on top of a tabletop or similar platform, then let it rest. Pinch the protruding icicles between your fingers and make a horizontal cut, much like a Barber would do with your hair, to reduce its length. If you've made your cut along the top of the shortest icicle, then you are ready to take your pinch and tie the icicles onto your jig. Otherwise, give your pinch a little shake to remove shorter pieces. This, by the way, is a great way to use suitable scraps of icicle cuts that would normally be discarded.
An example of a spider jig made from icicles appears to the left of the scissors in the photo.
