Drilling posts

[Stimw]

Just make your own "Spade" bit with a piece of round rod by flatening the end out with a hammer then sharpen it to the spade bit shape. Hammer working the end will make it harder.
Spade bits are not even hardened! I have sharpened them and I could tell by how easily they grind.
I have had to weld 16 P nails to 3/8" drill bits to make a long bit to drill through floor and insluation then crossmembers when working on refer semi trailers! Worked very well too!

 

[grsthegreat]

Homedepot sells an electrical drill bit attached to a 5 - 6' piece of steel drill shank for about $38.00 as i recall. i have several if them myself, but have never drilled thru that thick of a log. i use them for drilling from either an electrical outlet or a switch box inside the wall and thru the plates.

Klein Tools 9/16 in. x 54 in. Screw Point Flex Drill Bit 53718SEN at The Home Depot

 

[Sodo]

I need to bore some posts too. Glad to find this thread.