which drill bits for oak beams?
Hi, I have 4"x6" hard oak beams that I will use to make a camping bench. These things are very tough to drill. I only have a hand cordless drill for this job.
- I used 1/2"x18" auger bit which had hard time drilling through 1 beam. The drill bit got very hot
- I used 3/16" drill bit to make a pilot hole for 1/2" lag bolts. But the lag bolt broke when screwing it in and the drill bit bent as well
- I used 6" nail (no pilot hole). The nail started bending after it went in about 1"
- I used 6" irwin speedbor and it seemed to work but my drill sure got a workout and it drained the battery
Ideally I'd like to use a threaded rod to connect everything together. So, I need to run a hole through all beams (4x4" wide). However if that's not possible I could connect them by using lag bolts.
What is the best drill bit for this job? Is it possible to drill through 4x4" beams all at once? Do I need a bigger/stronger drill?
Last edited by SnoSheriff; 08-17-2018 at 02:00 PM.