18 years ago
I'm going to attempt to machine some special brackets and would like to
hear any suggestions or alternate approaches. I plan to start with two
4"x4"x8" 6061 aluminum stock bars. I need to drill one 2" diameter hole
and one 1 5/8" diameter hole (4" deep through the 8" wide face of the
bar). Then I need to drill three sets of holes through the
perpendicular face (for bolts). Finally I plan to cut through the
center of the block so that I will be left with a front and back bracket
to hold two poles (one 2" and one 1 5/8") that are held together with 4
Does the basic plan sound reasonable (using a drill press)?
Do I need cobalt bits to drill the holes in 6061 aluminum? Or can I use
standard metal bits?
Should I use a cutting lubricant? Suggestions?
Any ideas on splitting the block if I don't have access to a band saw?
Do you think the 6061 Aluminum will function as strong brackets?
Thanks very much - any and all comments are greatly appreciated.