10 Minute Slipcase

The 10 minute slipcase is a lightweight temporary slipcase made from 3mm card stock.

This page has been written as a resource for a Victorian Bookbinders' Guild meeting held on Tuesday 23rd June 2026.

3mm card

1. Measure the height (H), length (L) and width (W) of the book and add 1mm to each.

   A = W +1mm
   B = H + 1mm
   C = L + 1mm

2. Using the formulas below, calculate the size of card required and cut down a piece of card accordingly. Although grain direction hasn't been mentioned in previous variations of this slipcase it is recommended to ensure the grain is running short-length of the piece of card, which will be the same direction as the book's spine when complete. If you don't have a piece of card long enough for your book's size see variations below.

   Length = (C-5mm) + C + A + C + (C-5mm)
   Height = A + B + A

3. With a pencil draw the following lines using the measurements above.