Dear Friend,

I used to hate this part for a long-time. For a good start - here:

http://ddgehelp.blogspot.com/2005/11/dgge-guide.html

Here is a tip from me - the main problem with pouring the gel is the leakage. To prevent it, I used to grease the edge of the two glasses with Vaseline (do not overdo) before assembling the unit. And when you twist the wheel, the motion must be evenly, permanently and slow.

Wish you luck!

Dear Mihail,

Thank you very much for the link, it is very helpful for gel preparation and I have found a lot of reply for many problems.

Best regards