Making calcium citrate from egg shells: What do you guys think of this? All Opinions and references welcome!

Ok... I am not getting enough calcium juicing etc. It just isn't happening. My nails have been splitting so badly they are ripping down the center toward the cuticle! OUCH! So I reluctantly went back on my calcium supplement 3 months ago ( I take less than the recommended dose of Bone-Up) so I'm taking 2caps 2 times a day w/meals (recommended is 3 times a day for total of 6 caps).

I started Kombucha 2 months ago and just came across this old Italian recipe to make calcium supplements soaking raw eggs (in the shell) in lemon juice for 2 days. Since Kombucha is highly acidic, I am trying it w/the Kombucha (instead of lemon juice) and it is totally working.
The shells are disintegrating and there are bubbles on the outsides of the eggs! By tomorrow I will very carefully remove the eggs (which will only have membranes left) and then take a spoon of this stuff a day!

It makes calcium citrate.
Here's link for exact recipe and her personal experience using this.
http://games.yahoo.com/games/login2?page=sp&cat=intermediate

Now this sounds just like what Dr. Schulze makes fun of... people eating the shells of the oysters etc. to get calcium.

I have osteopenia (which I haven't had bone density testing for in 8 years cause I don't want the radiation). So I know I need to pay attention to calcium, vit d etc.
I get my D from the sun or cod liver oil.

What do you guys think of this?
Thanks for your time.
Suzanne

Thanks for your time.
Suzanne