I did an A-Cat mast repair what a job! It broke where there was difference in the wall thickness around the spreaders. The step-down in thickness was a sudden drop not a tapper making a hard spot in the mast. To fix it I had to make two sleeves one to even out the inside walls then a sleeve to fix the break.
http://www.themanshed.net/archived-projects/acat-mast/?g2_itemId=1750
Last edited by TheManShed; 03/11/12 05:03 PM.