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Discussion Starter · #1 ·
Hi I have a stone wall that I am putting a 4x6 PT lumber as wall cap (as shown in the picture)

I am drilling 1/2” hole for tapcon and hammer drill with masonry drill bit doesn’t work! I think the rock is too hard. I drilled for several minutes but didnt see the hole getting deeper and started to worry about drill to overheat. Any suggestions?

Wood Rectangle Hardwood Flooring Wood stain
 

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Discussion Starter · #4 ·
YEP.... Drilling rock can be very difficult as different rocks can be very dense and hard.

Can't see your drill....is it a full hammer drill with SDS bits...or one of those "hammer" drills that just has a little cam rotation. You may not be able to drill certain rock, but a bosch bulldog SDS rotary hammer may do it..

Not sure why you'd be drilling 1/2 holes for tapcons...????

How about glueing those timbers in.????
I am using a cheap HF hammer drill. Probably should look into tool rental. I let the timbers dry and one of them is slightly warped. I was hoping screwing tapcon will straighten it.
 
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