QUOTE(victorian @ May 24 2021, 12:23 AM)
Boss I bought a Black and Decker cordless 18V drill thinking that it can drill through my concrete ceiling. But the most I can go is around 10-15 mm. I checked the product spec it says masonry limit is until 10 mm only.
How do I drill a hole deep enough to fit in a 3 cm wall plug ya? Will a 650w corded drill be sufficient? And is all concrete the same? Because I've seen people drilling concrete using 18V cordless drill before, and when I do it it's impossible for me to go any further.
18V rotary hammer or any corded rotary hammer using SDS+ slotted drill bit is the performance level you need.Reinforced concrete floor slab (ceiling slab) is a material requiring a Mike Tyson punch when drilled. Otherwise all the prisoner would have dug big big hole in their prison cells to escape easily.
And only Mike Tyson punches from rotary hammer break concrete in 6 seconds per wall plug.
18V cordless drill driver, and any cheap corded drill "hammer drill" using those
round drill bit basically is all the same regular untrained people like you and me.
If we were to take on Mike Tyson 1-on-1 in a boxing match probably we'll just end up in hospital or broken bones everywhere for life.And even if you are willing to break every bone in your body just to fight Tyson, to make him even start to sweat will need you to "tahan" like 10-15 mins of his punches.
So that is how ineffective our weak punches are against Tyson level fighter. That is also how ineffective a normal "impact drill" is in concrete.
As per previous post, do not get another "untrained fighter" like me and you aka "hammer drill" to fight Tyson. It is ineffective.Concrete strength gets harder over time. It can range from our national level boxing champion (maybe not broken bones for you and me but just black eyes) if its freshly cured within a couple years; or world champion Tyson level if its an old building made in the 1980s. You can buy bigger machines for those MRT/LRT rail pieces (Hilti level).
Concrete also can be made to different strengths depending on what the maincon ordered (as per requirement by architect/QS/project engineer). A 3-storey building may not need very strong concrete but typical high rise is like 40-50 storeys nowadays so it has to be stronger.
It also depends on exact material (AAC blocks i.e. lightweight aerated concrete "sponge" oversized bricks) vs RC (reinforced "poured" concrete).
AAC blocks may still be able to drill with 18V drill driver.
RC wall/RC floor slab, 5 mins also nothing much happen.
The question of your wall plug size.. if its one of the wood plug sized like a ciggie or anything finger size, then
ANY rotary hammer will work, even the smaller BOSCH GBH 220 PROFESSIONAL ROTARY HAMMER WITH SDS 720W 4-22MM 3 MODES will work fine.
Keyword: Rotary hammerRotary hammer is not expensive. For minimum standard Daewoo/Stanley/Total ones are around low 200 bucks, the lowest range corded GBH 220 Bosch about 320-330 bucks, and 18V rotary hammer (GBH180-LI)- the TOOL itself is not expensive but the battery is expensive. Since u already invested into the 18V B&D, I was gonna suggest just buying solo tool rotary hammer, but seems like there is none in the
B&D product catalogue - prob because B&D is the lowest end of the Dewalt-Stanley-B&D group.
This post has been edited by ceo684: May 24 2021, 01:34 AM