I believe he had said that he filled the gaps with glue, and once dried, they were just as strong. You may want to verify that with him however, I'm not 100% sure.
It's currently housing a 12" TC-3000 and taking 2000w of daily abuse, and holding up just fine //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif