Step 5Drilling the Posts
We found this awesome 2" aluminum round "U" channel stock that was perfect for an axle, but there was no way of cutting a hole that size through the 4x4 post, so we went down to the local hardware store and picked up an adjustable spade bit! It was "hella" expensive, but we beat the system - if you use it once, and return it... you don't put a hole in your wallet, and you get a big gaping hole in that 4x4!
The whole drilling process was exciting, kind of like watching an auger, but slightly less insane.
Anyhow, this steps self-explanatory - just remember to wear goggles/glasses and go straight into the post! If you're off by even a little bit, you're going to need to open up the hole even more, and that will weaken the posts even more.
When you're done, slide the aluminum stock into place.
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