Hey everyone, thanks for the responses.
It is obvious that I need to better explain what it is I'm trying to accomplish as I certainly didn't do a very good job articulating myself previously.
So, I have a straight nickel band like this:
https://imgur.com/gallery/gxlAVbg
And I am looking to give it a slight curl on one edge so that it fits over the terminal end of the shank as it does with this pipe:
https://imgur.com/gallery/Kz2UdBZ
As you can see, it's not really a big modification. I am operating under the assumption that if bands aren't readily available machined like the one on my pipe in the second photo, then making the necessary modification should not be difficult. That assumption, however, may be erroneous. To date, I've found neither an online or B&M merchant that sells any bands that aren't just straight tubes like the one in my first photo. I've also had no luck finding any videos or articles that allude to the shaping of such a band.
Now, a dap set, at a glance, looks like the right tool for the job. However, I freely admit that I am very new to this sort of thing and I can't be certain that I'm understanding the purpose of the dapping block.
Hopefully I have done a better job of explaining myself this time around. If I have, then my questions are as follows:
Is the dapping block what I need to reshape the band that I have into the shape I have pictured above? And if so, is that procedure terribly difficult?
And
Regardless of the answer to the previous questions, where online could I find bands that are already machined into the shape I require? I've looked around Vermont Freehand's website and only found straight tubular bands. I also tried the website for Pipe Maker's Emporium, but it's under construction.
My apologies, this post has been difficult to explain adequately because I've largely lacked the necessary vocabulary for describing what I want to do. I've tried to fill the lexical gaps as best I could, but searching around the internet is difficult in such cases because it's often very difficult to search for terms you don't know using the few terms you do know but have so broad an application that they bring up plenty of unrelated results (e.g. searching for "army mount pipe" brings up a lot of results about military cavalry and searching for "tool for curling metal bands" brings up results about hair curling irons and bicep curls).
Thanks again everyone.