Oh yes, be very, very wary of the dreaded A3000. Perhaps the best Amiga ever imho, but such a bitch to work on.
I remember when I got my A3000 new as a kid, and my Dad buying me some upgrades for it, trying to install them and my hands were just shredded and dripping blood off my fingernails.
No kidding. The A3000 doesn't just "Have some sharp edges to be careful of". It's like they machine honed every %&$#?@!%&$#?@!%&$#?@!%&$#?@!%&$#?@!%&$#?@!%&$#?@! edge inside that case for maximum killing capacity.