Thanks again, Daryl.
And thank you David O. for the silnylon slider idea. Might never have thought of that.
Jerry, you must have a pretty good machine. Mine would never sew through a thick fabric & foam sandwich without a monster presser foot that would flatten the sandwich at the stitch line.
So it sounds like a toss-up between the tubes and the Insignia cloth wrap.
That is amazing that the cloth adhesive holds up so well.
To obtain a good fit over the hipbone crest, I like hip belts with a seam separating the top and bottom of the belt. So, two tubes. And since my belts attach at the small of the back, the belt would have two sections, one for each hip, so four tubes.
Anything to be sewn to the belt where there is foam underneath would be sewn on before the foam is inserted into the tubes.
But the ends of the tube, that extend beyond the foam, could be sewn shut and to webbing or whatever after the foam is inserted.
Sounds like the big MYOG advantage is the ability to select exactly the foam and fabric desired, with the best strength for the weight. Of course, if one can find a replacement belt made by a pack maker who has already made these choices wisely, and it is for a reasonable price, that might be another story.
If possible, I like to buy the smaller parts, like shoulder straps and hip belts, ready made, and turn full attention to the pack itself. There is so much testing and decision making involved in MYOG, that making every part of the gear can be overwhelming. For example, choosing the best mesh material for the inner surface of the belt. Wouldn't know where to start, and it would be quite expensive and time consuming to try to test everything out there. Guess that is an argument for the ready made parts if they come from an experienced craftsperson.
Just some thoughts.