Make your own sock blockers
Figures (c) and (d) are less than those of the actual measurements of the foot so as to allow the sock to remain snug and close-fitting after blocking, providing some ‘negative ease’. Now is the time to grab yourself a pen and get scribbling. Use a large sheet of scrap paper (or several taped together) and, using a ruler, draw a line the length of (d) on your paper. Using the diagram on the right, use your ruler to draw another line the length of (c). Using these two measurements as a guide, draw the shape of your sock-blocker onto the scrap paper, making a note of the angle at which the foot and leg meet – it is not a 90° angle (which is what I drew on my first attempt).
Once you are happy with your template, cut it out. Now, find your cardboard box, flatten it out, and place the template over an area where there are no ‘seams’ or folds. Take notice of which way the corrugation or faint lines of the cardboard box are running (from top to bottom or side to side – this is very important) You need to cut out four identical sock-blocking templates – two with the corrugation running vertically, two with it running horizontally.
UPDATE: further hand-made, custom-fit sock-blocker information now available! Please do take a moment to let me know if you have found these instructions to be useful, interesting and/or informative!