General Category > General Discussion
tips drilling concrete pls
Guzzistajohn:
--- Quote from: oldbike54 on March 14, 2015, 04:29:38 PM --- One question , will the drop in anchors resist twisting out every time the bolts are removed ? The reason I suggested using water was because of the size of the wholes , helps preserve the bits . All of the above methods will probably work , do what feels comfortable .
Dusty
--- End quote ---
The anchors need to be set in with a punch, they won't twist. Today's bits will drill a BUNCH a holes, rebar won't even kill 'em
oldbike54:
--- Quote from: Guzzistajohn on March 14, 2015, 04:57:00 PM ---The anchors need to be set in with a punch, they won't twist. Today's bits will drill a BUNCH a holes, rebar won't even kill 'em
--- End quote ---
Well OK then .
Dusty
charlie b:
Yep, Hilti for me too. Used them when building a wire factory. Lost count of the number of holes drilled and anchors set.
Rough Edge racing:
Drilling overhead with a 5/8 drill for 1/2 inch drop ins the bit would last several days depending on concrete. Older stuff being a lot harder than 6 month old stuff. Always keep moderately heavy pressure on the drill motor.. Feel and listen ,if it's drilling smoothly and then bounces around in your hands you have probably hit steel..Stop before the bit jams ..Residential garage might be just wire mesh...
MotoGoosy:
Put anti-seize compound on the bolts before you put them in. Couple a bucks for a tube at the hardware store. Then they won't rust and will come out as easy as they came in.
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