Scavenging a cheapo motorized model for DIY acoustically transparent screen?

I've recently started looking into building a projection screen on my own; the reason being, I haven't been able to find a screen that meets all my criteria:

• No wider than 70" (80"-ish diagonal)
• Acoustically transparent (AT)
• Shouldn't cause moire at that full projection size with a 1080p image (or, ideally, even with smaller 1080p images)
• Must not have a pattern that will be visible to me from 9 feet (which incidentally implies "no perforated vinyl", because their patterns are too coarse; so, "woven fabric only!")
• Motorized, or at least "rollable/part-time" (for on-ceiling mounting)
• Black backing that is also acoustically transparent
• Cheaper than a reasonable secondhand car (i.e., "no Screen Research")

My latest idea is to experiment with getting a (reasonably) cheapo motorized non-AT screen, taking out its original screen material, and attaching to it some home-made AT fabric (as simple as linen?) and black AT backing material (black speaker grill cloth, or any black fabric?). Anyway, the actual materials that I could try will vary, but I'm basically planning to lowball the fabric selection (at least initially).

I've done my homework and looked through all the FAQs and stickies on this forum, but the only direct mention of buying a cheap motorized screen to replace its material with something custom was in a single thread, and the discussion there didn't elaborate much on the process of the replacement itself. So, I decided I'll start this new thread to see if I could gather some first-hand feedback on specifically this aspect of such an attempt:

What do you think about the difficulty/feasibility of replacing the material of a purchased cheap motorized projection screen?

Specifically, are there any caveats or any "musts"? Any tricks to avoid bunching or waviness? Did you (or should I) remove the whole screen surface down to the rotating tube and reattach the material directly onto it, or should I plan to cut-and-sew somewhere midway for better results? Any specific kind of cheapo screen I should look for, which might make the transplantation more convenient or more manageable?

Further, (and I really expect even less first-hand feedback to be available on this) what was your black AT backing material, assuming it was successful? For that matter, what was your primary screen material, assuming it ended up moire-free and with unnoticeable fabric pattern at such low viewing distances and image sizes as my requirements, and with 1080p images and assuming strong 20:20 eye sight?

(That is quite a set of specialized questions, isn't it? I know. I think I'm about to "niche myself" to oblivion soon...)

I guess you're right.

Actually, I did look through that thread. But, now that I can't gather any more specific feedback, I suppose I'll go back and go through it a with a fine-toothed comb...

Thanks.

I appreciate the suggestions. That's helpful.

Not having attempted this before, any specifics on the details helps a lot, at this stage. I have other questions in my mind, too. Such as what to do with the (vertical) edges of the screen material. Leave them raw cut? Fold them over and stitch? Tape? The same goes for attaching the "weighting bar" (?) (not up to speed on my detail terminology) along the bottom edge of the screen. Should I loop the material around it and stitch? What kind of stitching anyway? Not by hand, certainly. I don't have sewing machine either. So, taping again, maybe?

Other questions revolve around the black AT backing. I get the impression that even fewer people around here utilize something like that. There are many uncertainties in my mind about attaching that to the screen material. I also wonder whether it might interact with the screen material and cause additional waving or bunching (when rolled up, perhaps).

Not that I expect to hear answers to all of these. I'm mostly just conveying my stream of thoughts...

Those are some very helpful specifics. Thank you very much.

The backing is still the biggest question mark in my mind. Apparently, for good reason... I guess it will all come down to just experimenting on my own, like you said.

Thanks again!

That might make things simpler on the technical side, but I don't know how it will sit with my girlfriend if I attempt to drill that many things onto the ceiling of our apartment's living room...