Usually we ask ourselves what size of metal ring/spring is the most convenient for the work we are doing, so that it is not too small or too big.
The best thing to do in these cases is to measure the width of your already printed project, with everything and the finished covers (laminated and glued), you can measure the width with the part of the ruler in inches because the metal rings/springs come in inches and that way you realize what size you will be occupying.
Additionally, we share this base table so that you can guide yourself, it is calculated with 90grs/24lbs bond sheets and with 60 chip cardboard.
If you have any questions about it, write to us.
Greetings,
