The whole model was made for 5 days, and the equipment is the 2019 ipad pro. First of all, the software is really good, but it may also be the reason for the function of the IPAD itself. It was stuck twice in the later stage of engraving. But it really felt great when the results were finally rendered. I hope the official can continue to optimize this app. Thanks again for the official development of such a great software!