After a lot of discussion from my original video about drilling concrete we decided to make another one. We have came up with a better way of doing it now.
Ideas like this are definitely under appreciated!- It is certainly worth a Nobel Prize! If you don't get it you have my utmost appreciation- and that's just as good ;)
This is gold! Thanks so much. I have to drill a 3.5" core hole through double brick and i have already drilled my 10mm pilot hole. Was going to do similiar by cutting a hole in timber to use as a template, but your method makes more sense, apart from the fact i already have the 10mm pilot hole
@campbellbuilt project completed, however the external wall has a column in the way and the spacing was about 5mm too narrow for the hammer drill and long 3.5"corer. So I had push through from the other side and it dropped maybe 8-9mm. I had to use a smaller drill and the original pilot hole and round guide to keep it as clean as possible, the swapped it back to keep it from dancing around.
There are also center bits you can get, that made of 2 crossbars that fit in your drill, with a center bit on it. For the same purpose, but no wood needed ;-)
Really nice idea! I would use a larger sds bit (3/16 x 12), It will break the other side, but just a little bit, then the plywood and the tapcon. Thanks!, Sorry for my english.
What's the brand of core bit that you use? I see a LOT of core bits advertised, but a LOT of them say "do not use on concrete". I have to bore a 2.5" hole in concrete to install a fence door post support. Can these bits be used on concrete? What brand are they, and where did you get them? I want to bore a 2.5" hole, go down about 2 feet past the edge of the concrete wall footer, install a 2.5" diameter post shell that goes from the surface down into the ground, and then install a 2" fence post that can rotate, while carrying the fence gate, into the sleeve pipe I installed through the concrete.
why wouldn't you just drill the hole straight through from one side? What is the point of drilling a little bit from one side, then going to the other side to try to line it up?
No, there’s a couple solutions. 1st would require two wood hole saws. Cut a plug out of a 2x6 using both a 3” and 4” wood hole saw bits. Attach both wood plugs together and use that to temporarily get your 4” started. 2nd is us the method in my other video ruclips.net/video/EJhBEKcSbj0/видео.html
If did this on my job I would fire him. I’m an electrical contractor, everyone has proper tools on the truck or at shop. Plus it took way too long to lay out, I could have drilled 20 holes. They make dry core and wet bits that makes it simple
Can we use the core bit on a regular drill to do a hole in concrete? Or is it necessary to use a hammer drill? I need to make a hole for my kitchen sink drain 😩 Newbie with tools 🤷♀️
8m new at this so I may be wrong but I know you can get break out with carbide core bit in hammer mode. But why would you get break out with a diamond core bit that's not hammering? Thanks.
Typically both sides of the block wall or concrete will be visible to the eye. I want a super clean hole for that reason since there’s no good way to repair damage after the fact. Yes your right about not using hammer mode and being better for break out but concrete is a funny thing. Block is especially susceptible to break out regardless of how your drilling. Good question.
Ideas like this are definitely under appreciated!- It is certainly worth a Nobel Prize! If you don't get it you have my utmost appreciation- and that's just as good ;)
Thanks a lot my dude. I needed to bore a hole to install my AC and now it looks clean ☺️
Just what I was looking for. Genius
This is gold! Thanks so much.
I have to drill a 3.5" core hole through double brick and i have already drilled my 10mm pilot hole.
Was going to do similiar by cutting a hole in timber to use as a template, but your method makes more sense, apart from the fact i already have the 10mm pilot hole
I’ve done both styles and they both work great but the pilot bit guarantees exact placement and tear out on the other side.
@campbellbuilt project completed, however the external wall has a column in the way and the spacing was about 5mm too narrow for the hammer drill and long 3.5"corer. So I had push through from the other side and it dropped maybe 8-9mm. I had to use a smaller drill and the original pilot hole and round guide to keep it as clean as possible, the swapped it back to keep it from dancing around.
Very satisfying when done isn’t it?
You’re humorous at the same time informative, A Nobel prize 😀😀 ?
I was using this drill for mixing mud and stud drills. Thanks for enlightening me to this new application.
This thing is awesome. I’m surprised that it’s as affordable as it is for what your getting.
The plug and tapcon is great idea. Thanks
Appreciate the comment
There are also center bits you can get, that made of 2 crossbars that fit in your drill, with a center bit on it. For the same purpose, but no wood needed ;-)
I just got one with a pilot drill in the middle works good.
Really nice idea! I would use a larger sds bit (3/16 x 12), It will break the other side, but just a little bit, then the plywood and the tapcon. Thanks!, Sorry for my english.
Appreciate the comment.
Thanks for the demonstration 👍🏿
Your welcome
Hi.
Where did you get the bits...?
Thanks!
Beee-rilliant! Thank you!
You bet!
Really need to make sure it is level!
Very good technique!
Glad you like it!
Superb hand work 👍 good
Thank You….😀
Who makes the dry core bits you use in your videos
Well done sir !
Thanks
That's a beautiful hole brother
These little things in life sure can make you happy. Some one might say it’s “Just a hole” but it’s a hole in stone or concrete 😀
Smooth move!
Nice
Brilliant!👍
Thank You
Great Technique .......
Thanks!
Winners!
I’ll take it
Good advice❤
Appreciate it
What's the brand of core bit that you use? I see a LOT of core bits advertised, but a LOT of them say "do not use on concrete". I have to bore a 2.5" hole in concrete to install a fence door post support. Can these bits be used on concrete? What brand are they, and where did you get them? I want to bore a 2.5" hole, go down about 2 feet past the edge of the concrete wall footer, install a 2.5" diameter post shell that goes from the surface down into the ground, and then install a 2" fence post that can rotate, while carrying the fence gate, into the sleeve pipe I installed through the concrete.
why wouldn't you just drill the hole straight through from one side? What is the point of drilling a little bit from one side, then going to the other side to try to line it up?
Thank you, this will help ..
You're welcome!
great idea!
Thank You
Great video is this the same method to use on a 7” thick wall?
Nice work
Appreciate it
Good idea！
What specific dewalt tool you used? I want to make a hole out of a 7 inch thick concrete for cctv wiring.
Your a genious
How to make a 4inch hole in a exsisting 3 inch hole in wall brick wall, can you double stack the hole saws?
No, there’s a couple solutions.
1st would require two wood hole saws. Cut a plug out of a 2x6 using both a 3” and 4” wood hole saw bits. Attach both wood plugs together and use that to temporarily get your 4” started.
2nd is us the method in my other video ruclips.net/video/EJhBEKcSbj0/видео.html
Its called a Core Drill Block.
If did this on my job I would fire him. I’m an electrical contractor, everyone has proper tools on the truck or at shop. Plus it took way too long to lay out, I could have drilled 20 holes. They make dry core and wet bits that makes it simple
Okay 🤣🤣🤣
please don't waste the viewer's time with talking about your yard when they're here about coring
Please leave
I bet your yard hates you! 🤣
Can we use the core bit on a regular drill to do a hole in concrete? Or is it necessary to use a hammer drill? I need to make a hole for my kitchen sink drain 😩 Newbie with tools 🤷♀️
Regular drill is just fine.
@@campbellbuilt thank u for responding so fast 😊 happy holidays
Will it cut through asphalt?
Oh yahhh. With ease.
Hi I'm looking for a bit set like that 4 inch and 2incn one you have Tha long one
eBay or Amazon
He did it the hard way there is an easier way to do this
Okay, now show us 😀
8m new at this so I may be wrong but I know you can get break out with carbide core bit in hammer mode. But why would you get break out with a diamond core bit that's not hammering? Thanks.
Typically both sides of the block wall or concrete will be visible to the eye. I want a super clean hole for that reason since there’s no good way to repair damage after the fact. Yes your right about not using hammer mode and being better for break out but concrete is a funny thing. Block is especially susceptible to break out regardless of how your drilling. Good question.
Guess he don't like his eyesight.. most important thing to do is protect that!