Has anyone had a go at this? Basically you immerse a whole uncooked egg in vinegar for 24 hrs, change the vinegar and leave for a further 24 hrs. The egg should have it's shell now removed leaving it in tact inside its membrane. If such an egg is placed in distilled water it will swell up as the water enters through the membrane by osmosis. If it is placed in strong sugar solution it will shrink as water leaves by osmosis. I tried this and got the shells removed no problem but the eggs hardly changed in the water or the sugar solution. Left them for two or three days (supposed to work in 24 hrs). What went wrong? Has the vinegar damaged the membrane if left too long in it? The solutions were ok as the egg in water sank and the egg in sugar floated - but no much change in size. Any tips/ideas?