Remember that Hi-Speed video camera I listed under the resources that I have available for analysis. Well here is the eCraft cutting in slow motion. While there is no sound, you will be able to determine where that clicking sound comes from and also see it creating a tab.
When shooting video at high speed you need a lot of light and while I have it a good try here, the lighting could have been better for you. I borrowed this particular camera; but, as helpful as it has been these last two days, it's definitely on my wish list!