For those who create small micro coils/nano coils, what do you use to pull your wool through? I tired creating a few, due to not having the correct kanthal size, and couldn't pull the cotton through without screwing up the coil. Had to go back to a larger diameter micro coil to be able to pull the cotton through. If i rolled up the cotton very tightly, i could get some in, but the fluffy part always got stuck, and couldn't be pulled through. If you have any pictures of tools, methods, that would be incredibly helpful. Thanks.