I was inspired by this thread. I just completed my portable using the model linked to an old thread above. I was hoping to use my old igloo/mash tun, but alas, igloo has changed the style so I had to buy two. I still had to wing it a bit to accommodate the new style, but nothing was extremely difficult. I actually liked the fact that the handles are removable on the new style because I was concerned that someone, (like me) might grab the top handles to move it while loaded and rip the whole thing apart. This won’t happen now.
If you do decide to go this route, double-check inside for a true cylindrical shape. I didn’t and found (after I cut it) that one had a bulge where the foam insulation was not uniform between the inner and outer walls. It caused a few issues with alignment and sealing the interior sleeve, but nothing that silicone would not cover, and it had no effect on the outside whatsoever.
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