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You will also need a conduit drilling jig. This is made from a 4' length
of 2x4 with two 4' lengths of 1x2 screwed to it. The space between the
1x2s must be sufficient for the conduit to lay flat, but you want the
flattened end of the strut to rest on both of the 1x2s,
My conduit drilling jig was made for 3/4" conduit, so you'll see in the next pictures how I modified it to work with 1/2" conduit by adding some shims. The bottom line is that you need a way to hold the conduit securely while you drill a hole in exactly the right position. |