Hardback Spine Width Calculator This width is based on a mathematical calculation and can at worse be subject to a 10% variation either way due to paper tolerances, so it is advisable to take this into account when designing dust jackets or PPCs and avoid designing a spine that has hard edges on both sides which may show this production tolerance. Please contact one of our technical services team if you have any queries regarding this. Please note that calculations are based on our stock paper range. |