03-12-2016, 10:40 AM
When I first read Greg's suggestion I miss read the '2x2 x1/4' as '2x4' and thought that was a great idea.
The span probably about 18 inches max and I am sure a reasonable quality 2x4 [which you seem to have plenty of] would handle the 500 - 700 lbs. If paranoid then a 4x4 or double up the 2x4. Some 3/8 threaded rod, some fender washers and nuts an you're done.
That way you save you aluminum for some metal working projects.
The span probably about 18 inches max and I am sure a reasonable quality 2x4 [which you seem to have plenty of] would handle the 500 - 700 lbs. If paranoid then a 4x4 or double up the 2x4. Some 3/8 threaded rod, some fender washers and nuts an you're done.
That way you save you aluminum for some metal working projects.