Cut acrylic nails into coffin shapes. Once you attach the acrylic tips to your nails, then it’s time to trim it into a stunning coffin shape. The first step that you must consider while cutting acrylic nails into a coffin shape is to determine the length. So, you’re going to choose the length for your nails. I know how hard it is to get the perfect coffin shape.16/04/2019 · It's all about that shape Besties!📐 You asked, and we delivered! Here is a Quick tutorial on how to make the perfect Coffin Shape for your next Mani!⚰️ Comm...21/08/2016 · Use a file or a grinder to get a straight flat edge at the end of each of your nails. Doing this will create a square shape, but you can taper the edges to turn the squares into coffins. Then, use a grinder or nail file …10/01/2015 · simple, once you glue the regular nail tips onto the nail bed, you begin by cutting the nail tips off to your desired length. In order for the coffin shaped nails to come out good looking, you will need to wear y...