Magnet holes were a touch small but I think that was just my settings (printed in petg). Opened the holes up a smidge with a drill. Magnets are strong and secure, and it doesnt rattle around inside at all

Printed in Matt pla. All 3 of the back hinges snapped as I was putting it together but managed to glue them and it seems to be holding. When it fails I'll redo in PETG and maybe with an extra wall or two

I had a strange thing where I tried to change the layers to 0.2 or even resize it slightly and the print time went to over a day. Printed in PETG and got a rough finish on the top of both of them. Looking at the pictures it looks like you and others have this same problem. Is it just because its right at the limit of what the a1 mini can handle? Still love them though