onthewater102 » Yesterday, 11:37 am[/url]"]
[url=https://www.tinboats.net/forum/viewtopic.php?p=356002#p356002 said:
BigTerp » 16 Jun 2014, 16:04[/url]"]... I would suggest you go with the 6063 angle and not the 6061. The 6063 is square where the 6061 is rounded in the center, which gives it higher strength but makes it a huge pain tyring to get things squared up...
I used 6061 and all it took was a few passes with a file to the corner of any piece you're looking to nest to the inside of the angle so that the two fit together flush but to each their own. Onlinemetals is a great resource and their diagrams are spot on to see the difference in the way the metals are formed.
6063 is also a softer alloy, not just a different shape (again, see the alloy differences on onlinemetals https://www.onlinemetals.com/productguides/aluminumguide.cfm ) so over time the vibration of the boat stands a better chance of loosening your rivets up than you will experience with 6061.