Sometimes a crafter wishes to break the mould of following a set written pattern and experimenting with ideas of their own.For certain styles, such as tailored and close-fitting styles, a set-in sleeve is the most appropriate sleeve to use.By entering some basic data, this simple app does the hard work for you by calculating stitches to cast on, shaping required and finished length.knitting instructions are created that can be shared / printed or saved to a PDF document.