everything printed perfectly except button part. first attempt hot end knocked it over at 92% mark as hot end caught print when trying to print the hole part at thinnest part of model on left side..second attempt I put a brim on base and the left side of hole at the thinnest part got bent backwards so I had to abort the print.. third attempt of button I put on brim and put on normal auto tree option..this one had the top part of button but left side of hole at the thinnest part got snapped off by hot end..I had to cut off top part of button and superglue it to the first attempt model to make a complete working button with the hole..you need to make the hole smaller so sides of hole are stronger and put on brim on base and tree supports to stop sides of hole being bent or broken off..apart from this the rest came out perfect.