Why isn't this in the manual. I always read the manual before I buy expensive things, to make sure that nothing is hidden in the fine print.
The manual is mostly for the sake of instructing you how to assemble the system inside the case. We could add more info to it, but the more pages manual has, the more likely people won't care about using it, they'll just want to wing it and do it on their own. But we don't want them to because Sentry is really complex and there are a lot of tight fits that people need to know how to assemble.
I disagree about repainting. It is an enthusiast thing for showbuilds, no ordinary person repaints their appliances.
Zombi was talking about damaging the powder coating. If you scratch/damage other common cases, especially plastic or aluminium piece, usually you can't do anything about it. The most you can do is order specific part in pristine condition to replace it.
If you end up scratching it up, wearing it off because you moved the case a lot (there's a mobility factor to our case as well), it's better that you have an option of refreshing it's look, rather than having to scrap it and buy a new one (like ordinary nowadays person would do). But that's like years since you start using it, and we want to let you know that you'll have that option.
Powder coating is still technically plastic, so there's always something harder that can leave its mark on it, like a screw (especially if you are tightening it onto the case), headphones that you can hang on the case may have some metal accents which could scratch the surface, if you're not careful when hanging them/picking them up, there might be some metal piece on the table when you're unpacking the case if you're moving around with it etc.
Obviously if the case was made from anodized aluminium, then it would be less prone to scratches, you'd need a harder force to visibly scratch it, but as we explained few times already, we need to use steel because there's a lot of welding, which would require twice as thick aluminium panels to not leave marks outside. And we're welding it so we won't have rivets or screws or any other fasteners being visible outside the case in random places.
I would rather know if the steel is ferromagnetic, so that I can mount the case to something with rare earth magnets, or cover it with fridge magnets.
You realise that your build will be something like 6 or 7 Kg? How strong magnet would you need to hold that? RIP hard drives and other sensitive electronics inside...
As for fridge magnets - yeah, you can do that, but bare in mind to not place them where your drives are.
I don’t know what aircraft cleaner is, or where I might purchases it, not owning an aircraft I suppose. But are you saying that such a cleaner strips the anodised finish from aluminium? If so that is quite a valuable property to have.
Aircraft paint remover, not aircraft cleaner:
It's for removing paint/powder coating, not for cleaning anodized aluminium (at least I don't think it would do any good there).
There are a lot of similar paint remover products.
The steel is galvinized under the powder coating so if you scratch it, it wont start rusting under the paint, making it to fall off in huge portions.
