You can use a bungy type cord on the flange, but you need the cord with a hatter's knot to tie the body to the block when making a new hat.Beautiful sequence, Alan. I also don't have a sandbag press but I learned something from my friend at W&W. Your flange should have an indentation near the flat side going all around. You slightly wet a fairly long cloth (Just as you have it in one of your pictures --I use a piece of an old cotton, white t-shirt--) and put it over the brim. Make sure it covers the flange fully. Then using cord, you tight the whole shebang. The cord goes in the indentation. Then you pull the cloth until is nice and tight, leave it for a couple of minutes and voila. There is a special knot "the hatter's knot" that you use to tight the cord. I haven't learned it yet. Have to see Major Moore for that. Hope this makes sense.