No, that loud isn't normal, at least not that WHHHHEEEEEEEE noise. Definitely some metal to metal, or plastic to metal interference, like one of the...
I don't, but you might consider making them yourself, I'm assuming you have the laser which would cut out the leather and the wood, rivets and a tool...
My old man taught me that hammers are supposed to bend nails (not in half, obviously ;) ), and because they do is why you should never use a nail gun...
Our house has also been an engraving shop ever since we moved here in 1969, I was 14 then, I'll be 67 in July. We have people come and go all day, if...