[header] How to blow the shell off a hard boiled egg [title] Remove a little bit of shell from each end of the egg. [step] It helps to gently hit the ends against a hard surface to create small cracks. Do this to an area about the size of a dime on the smaller end (18 mm diameter) and about the size of a nickel on the larger end (21 mm diameter). 
[title] Roll the egg between your hands or on a hard surface to loosen the shell from the egg. [step] This should produce small cracks throughout the shell.