When you need to redrill a larger hole over a small one you can cut a disk out of plywood to the size of the smaller hole (use at least 2 layers of 18mm of hardwood plywood for thickness, don't use OSB!!), drill a center hole in the plywood disk, insert the disk in the hole in the wall and use it to center your larger sized diamond core bit. You only need it for the first 2 inches of drilling, after which you need to remove both the disk and the centering bit.
@paulhaggett37103 жыл бұрын
Great tip, thanks
@adsmail Жыл бұрын
Roger, whenever I’m searching for a video guide, it’s always a relief to find one of yours in the listings.. it means I can separate the wheat from the chaff and not waste time viewing someone doing it wrong / without explanation / doing it in America. Keep up the good work!
@SkillBuilder Жыл бұрын
Thank Adam We are happy to see that our American audience is growing rapidly. We are planning a couple of visits soon.
@adsmail Жыл бұрын
@@SkillBuilderbring them round to our methods and vocab and you’ll single-handedly solve all these first-world KZfaq problems 🤣🤣 cheers mate.
@chrisgoodyear98202 жыл бұрын
Never commented before.. Been watching this guy for years and I never stop learning..so easy to watch..cheers Roger..
@johnclark19255 жыл бұрын
I really appreciate the time you take doing these videos. Great stuff. Many thanks.
@joe2mercs5 жыл бұрын
If doing a soil pipe I do a 150mm cut about an inch deep first and then fit a 110mm and cut through the wall. If a need to join or fit a 90 degree turn I can chip out to the 150 mm cut to create the clearance needed and keep the pipe tight to the wall. Cementing up the gap makes for a neat finish.
@kidaz8 жыл бұрын
This guy is so cool! I love these videos.
@JerryOneill-ve6fx Жыл бұрын
Really enjoy your videos Roger. Very informative and love your style.
@DylPhil78 жыл бұрын
Awesome work, thanks for sharing your knowledge!
@SkillBuilder8 жыл бұрын
+Dylan Phillips Thanks Dylan
@seephor9 жыл бұрын
Sex, If you can remember what that's like... Hahah
@melaniegutschlag53344 жыл бұрын
Great video, cheers
@donalain693 жыл бұрын
I learned more from this 6 min video then from watching 3 other 10-15min videos about diamond core drilling combined.
@SkillBuilder3 жыл бұрын
That is good to hear. We will learn from that. Keep it simple
@DjGiluk2 жыл бұрын
Great advice, thanks
@martinsapsitis42922 жыл бұрын
The full monty for info and usage. Cheers
@paulhaggett37103 жыл бұрын
Thanks Rog, next time I use a core drill I'll remove the centre bit
@stockportelectrics56003 жыл бұрын
Best site on the web. Keep it going as I've learnt tons! I'd be interested in your take on the best drills on the market now for large hole core drilling as there are so many. Are dedicated core drills really better or faster? and do you have any tips on cutting holes high up (i.e. for extractor fans) as I always seem to do my back in doing it from my ladder :/ ?
@philipswich293 жыл бұрын
Good tip, thanks
@paulsproule91322 жыл бұрын
Thankyou - very good advice. Best I have found.
@SkillBuilder2 жыл бұрын
Glad it was helpful!
@loloolololololol9 жыл бұрын
great vid roger, too many blokes don't know about dressing bits
@SkillBuilder9 жыл бұрын
loloolololololol Thanks. Diamonds are a boy's best friend.
@ukconstruction9 жыл бұрын
good video!! keep them coming
@SkillBuilder9 жыл бұрын
I see the Hatton Garden robbers used a Hilti diamond core drill to get through the reinforced concrete wall. They left it behind so hopefully the tradesman they stole it from will get it back.
@jonthecarpenter80936 жыл бұрын
Skill Builder hahahaha yer in time it was a hilti dd350 wet core drill made for drilling concrete n steel
@RiseOrRelinquish2 жыл бұрын
TY I'm going to be renting one of these to bore a 7" hole through brick
@dunlaoghaire10005 жыл бұрын
Thanks, dude, cool tip!
@shanmugame51783 жыл бұрын
realy your videos thanks
@johnyr59315 жыл бұрын
Go fro m the outside so you dont blow the face of the brick off
@SkillBuilder7 жыл бұрын
Live-Stream event from Bosch Power Tools U.K. At 9pm GMT on Wednesday 2nd November . You could win a Bosch 18 volt Brushless Combi by answering three simple questions. The answers are in the show. Join the fun!
@user-ph7lp2dl1q8 жыл бұрын
Beautiful video
@SkillBuilder8 жыл бұрын
Thank you. Have a look at out other videos when you get the time and inclination.
@jaredjackson85267 жыл бұрын
In and out! Good tip. :)
@armansrsa6 жыл бұрын
great video. To use diamond cores do you need a big powerful drill like yours or will a standard 650w drill do the trick?
@SLRist9 жыл бұрын
Great - I have to drill a couple of 6 inch holes in my garage wall for ventilation. Will be looking to rent a proper core drill. Not sure the clutches on standard SDS+ drills are up to the job...
@paulwalsh31635 жыл бұрын
Great to hear someone who knows what their talking about thanks for the advice paul Walsh
@drewd78242 жыл бұрын
Can you put a link to the tools you were using? Drill bit, vacuum, drill, adapters, etc?
@grayhalf1854 Жыл бұрын
Probably an impossible question to answer but what's the chance of breaking out the face of the brickwork if I'm drilling from the inside-out (1500w SDS+ drill, 162mm diamond core, rotary drilling only. Can't drill outside-in because I really don't want to do it up a ladder). I note that Roger drilled a nice neat hole but what's the chance of a relative newbie doing so with much less professional gear???
@williamkirk65632 жыл бұрын
Do you turn the drill onto hammer when you are using a diamond.. or are you always using just the drill. I think I was told that you only need to just use the hammer for making the pilot hole then when you have done that you just use the drill option. Thanks
@SkillBuilder2 жыл бұрын
That is right, don't use the hammer on the diamonds.
@williamkirk65632 жыл бұрын
Perfect, thank you so much. So what would you use the drill/hammer part for ?..sorry if its self explanatory
@goodall1bay5 жыл бұрын
wouldn't a bit of 80 grit sand paper work ?
@jonthecarpenter80933 жыл бұрын
Now try that on some blue staffs class b’s as a diamond driller by trade even with our professional kit it’s no fun
@SkillBuilder3 жыл бұрын
Yes and Accrington Nori's. Hard for soft and soft for hard.
@lickopotamusslurperton19443 жыл бұрын
I got caught out like that drilling through an engineering brick. I thought my diamond core bit was wrecked. I never knew until this day that it could be saved.
@jonthecarpenter80933 жыл бұрын
Tap the diamond segments up with a file job done
@pf56584 жыл бұрын
“ it’s like having sex if you could remember what that’s like.” Actually , it’s been so long I don’t even remember.😂
@MrAndyloz7 жыл бұрын
good tip thanks
@SkillBuilder7 жыл бұрын
Thanks Andy
@MrAndyloz7 жыл бұрын
Skill Builder Hi Again Is the drill a special one I have 70 4 inch holes to drill thru 9inch brick wall. So any more tips for faster drilling is much appreciated as I'm only getting 4 or 5 done a day.
@MrBestEditing8 жыл бұрын
Hi mate , What's the best core drill 240v or 110v? N which is model is best ? Thanks
@executor46 Жыл бұрын
I drill an inch or so inside then I finish drilling outside the house, less dust inside the this way.
@BODGE714 жыл бұрын
Is that the D21570K or D21580K and how reliable is it?
@davidnelson97772 жыл бұрын
'In and out like having sex, if you can remember what that's like' 😅
@walshmpaul8 жыл бұрын
Hey Rodger. never used dry diamond cores are the any faster than tct core? I usually core 2inch and 6 inch into 4 inch concrete blocks.. would like to know before I invest in new gear. great videos btw. Enjoy them a lot. and toolstop are no1 for gear. excellent service.
@SkillBuilder8 жыл бұрын
TCT used to be cheaper than diamond cores but Spectrum and Mexco are now so cheap they are worth a go. The difference is that you get a smooth hole on the outside so if you are drilling from the inside out it matters.
@yooo7115 жыл бұрын
what's the model of the Dewalt?
@zedman4428 жыл бұрын
Great tips there Roger. What I also tend to do is core drill almost all the way through then go through the other side so you don't have too much of a blowout on facing brick.
@SkillBuilder8 жыл бұрын
+Zed Man Good idea. There was a nasty bit of breakout on that job.
@Razz607 жыл бұрын
Skill Builder great vid roger just wanted to know whats the best size core to buy for a boiler flue?
@rayc15035 жыл бұрын
@@Razz60 117mm I'm sure you now already.
@Razz605 жыл бұрын
@@rayc1503 thanks
@rickmasters2893 жыл бұрын
No, I can’t remember what that’s like, Roger.
@fredbloggs60855 жыл бұрын
Great video, thank you. But what if you have a 240mm thick solid brick wall (Flemish bond) and only a 170mm deep core? Surely when you get to the end of the core you are stuck with a wad of brick that needs to be chiselled out, no?
@kiwifruitpoo Жыл бұрын
That's what the core extension shaft is for.
@explorer474224 жыл бұрын
What happens if it's a cavity wall? I found when I went through the first layer and started on the second it would jam so frequently! to the point where it got stuck completely. Should I re-insert the pilot hole? Is it because the 2 holes are slightly misaligned?
@BODGE714 жыл бұрын
You shouldn't have to reinsert the pilot hole. Slight misalignment could be the problem but it could also be a number of other issues. How powerful is your drill? - Ideally it should be around 1300/1400+ Watts. If the substrate you are drilling through is very damp then that can cause the core bit to continuously jam. Do you have a vacuum connected to the drill to remove the dust? Are you dry or wet core drilling? Have you hit a wall-tie?
@timberwrightsvs4804 жыл бұрын
Uh bit uh the old in and out, aye? I seem to remember that, mate.
@RanDom-pl7fx2 жыл бұрын
...if you can remember what that's like....so true
@Putnab74 жыл бұрын
LOL "In and out, rather like you would if you were having sex...If you can remember what that's like"! You are a Funny Man! Also educational. Thx!
@thomasblackwell95075 жыл бұрын
Unfortunately, since I had a stroke, I can not remember what it is like.
@markjarman78194 жыл бұрын
Thomas Blackwell that’s funny since I got married it came to a end😂
@lovingeorge17 жыл бұрын
Can i use SDS plus drill bit on a standard chuck ? I purchased a 30mm Tungsten Carbide Hole Saw bit for making few holes in a cement plastered brick wall as part of a DIY project at home and it is a SDS plus drill bit and what i have is a pretty basic Hitachi hammer drill, so i wanted to know if this drill bit would be compatible with my drill. Also if I can use it, should a hole saw be used on hammer setting ?
@SkillBuilder7 жыл бұрын
Those tungsten carbide tipped hole saws are made to hammer on SDS and your percussion drill won't get the best out of it but it will do no harm. Stick it on hammer and have a go but keep pulliing it out and letting it cool down slightly because they are not made for high speeds and overheating they don't like. Some people spray them with a bit of water which helps but it makes a mess.
@SkillBuilder7 жыл бұрын
Also I forgot to add that I bought a complete set of ten diamond core bits up to 35mm for less than £10.00 on ebay. Straight out of China but they are brilliant. I will do a video on them soon If you run them wet they are great
@jsr21016 жыл бұрын
노가다 아저씨 말씀 정말 잘 하시네요!
@NW0106 Жыл бұрын
Which size core drill for 110mm soil pipe? 110mm or 117mm or even 127mm?
@SkillBuilder Жыл бұрын
Hi Neil I made this mistake on my first every core drill. You need one that will take the collar of the bend or branch and to give yourself some wiggle room you need a 127mm bit. This allows a bit of deflection if you need to angle the pipe and elbow.
@NW0106 Жыл бұрын
@@SkillBuilder Thanks for your rapid response and for the info. Really appreciate it. Love your channel. It’s always my go to for instructions when I have some diy to do. You always seem to have a tutorial for whatever job I have lined up. A true professional. Thank you 👍
@tonydization5 жыл бұрын
Any idea where the dust extraction kit comes from? Googling Dewalt gets me nothing.
@SkillBuilder5 жыл бұрын
I will try and track it down. It seems the DeWalt system is no longer there but I can't believe it has gone.
@SkillBuilder5 жыл бұрын
www.coredrillcity.co.uk/product_info.php?cPath=1_22_51&products_id=562&osCsid=addhsep0naf71o2k0p3ntfp1q3 This is the same bit of kit. I don't think DeWalt made it. You can actually buy it as part of a diamond core set from Screwfix for a lot less than buying it on its own.
@tonydization5 жыл бұрын
@@SkillBuilder Very many thanks, I've discovered Mexco also make a kit though I can't vouch for it...www.mexco.co.uk/Products/Diamond-Drilling-Dry-Core-Drill-Kits-X90-Grade/A10DCDKITEXT3 but you'll need to find a stockist.
@GEricM7 жыл бұрын
I have a bit of metal to cut through inside the concrete that I'm drilling. Its just a vent pipe, the metal is only very thin about a millimeter or so. My question is will the diamond core bit get through that? anyone know?
@SkillBuilder7 жыл бұрын
If the metal is embedded in concrete then the diamond teeth won't snag on it. The diamond will cut through the metal with no trouble. It is only when it hits a bar suddenly that it knocks a tooth off. Take it easy let the diamond do the work and you will be fine.
@GEricM7 жыл бұрын
thanks great video btw
@loafersheffield6 жыл бұрын
"Like having sex, if ya can remember what that's like!" LOL. "I've been married 16 years. You only get 7 for manslaughter!" (Mike Harding.... or might have been Les Dawson..??) Try coring thru Accrington brick. East Lancashire. The casts for the bricks had the letters "IRON" imprinted on them, but they didn't reverse the lettering. So, when they came outa the kilns, they had "NORI" imprinted. All the same, I have never encountered bricks so impenetrable and hard as these. Top tip re exposing newer diamonds. Those cores aint cheap!
@SkillBuilder6 жыл бұрын
loafer sheffield + I know the Acrrington Nori very well and use it sometimes for the diamond blade tests in Professional Builder Magazine It is class A engineering brick like Staffordshire blues and looks great in a dpc. I knew it spelt Iron but I hadn't heard the story about the casts. It would be mirror writing.so maybe the bloke who laid them in was having a bad day.
@jcfpv34548 жыл бұрын
Glad to hear that i wasent told and know its too late but i want to bring awarness of this evil disease
@pattycakes75435 жыл бұрын
very useful. a few times a year a need to drill a 5 inch hole through engineering/concrete (new build fireplaces). its always a pain and ive often reverted to stitch drilling, which makes me feel like a muppet. im sure my drill is un powered for the job and worry that a 5inch core drill is too big/dangerous. @skill builder how big can you go, before its dangerous. i once got a quote from a firm to wet drill a 9inch core. they wanted £400....
@tonydization5 жыл бұрын
You can drill up to 5 inch but rent a dedicated machine with enough power and a decent clutch, any larger and you really need a rig that can bolt to the wall/floor for saftey.
@handsfree10007 жыл бұрын
My diamond core is jammed in and I can't get it out. It's in at full depth of core. Any ideas?
@SkillBuilder7 жыл бұрын
+ Peter It can only be dust that is jamming it so you should be able to suck out the dust and tap it gently to free the dust. If the wall is wet you need to run a fan heater or something on it for a few hours to dry that dust paste out. Jamming can be a problem hence my tip about pulling it out as you go. Let us know how you get on.
@handsfree10007 жыл бұрын
I was drilling the floor bringing in a new water main, had to go under the wall of house, I took out the adaptor and drilled through threaded hole in core with long drill to reach trench under wall, then used vacuum under core to suck out dust. What a job! Thanks for as vice mate
@SkillBuilder7 жыл бұрын
I feel for you Peter. I have done so many of those water mains under the foundation and they are never easy. A bit from outside a bit from in and there is always the last bit you can't get at. Still you did it mate so chalk it up.
@vandamparmo7959 Жыл бұрын
Use a pair of stillsons quicker than using a fan heater
@AlexinOslo4 жыл бұрын
What drill are you using?
@SkillBuilder4 жыл бұрын
DeWalt
@AlexinOslo4 жыл бұрын
@@SkillBuilder What model and watts. I'm going to core a 162mm hole in LECA block. Will 800w be enough?
@techguy6664 жыл бұрын
@@AlexinOslo Absolutely not, minimum 1500w
@AlexinOslo4 жыл бұрын
@@techguy666 I cut through the Leca in minutes with an 800w Metabo Drill with clutch. The core bit was from UK drills, really cheap. I made 4 x 160mm holes. It was overkill but luckily I sold the drill after the job for almost what I bought it for.
@AlexinOslo4 жыл бұрын
@@techguy666 1500w 😂 Last time I trust KZfaq.
@asciidv7 жыл бұрын
I need to drill a vertical blind hole in concrete to locate a pole. I have a 90mm x 480mm core drill. I would really like to go down at least 400mm. How do you extricate the concrete core? Any advice would be gratefully received. Thanks, Barry.
@SkillBuilder7 жыл бұрын
Asciidv Hi , I would keep taking the core out every ten seconds to make sure it doesn't bind up with dust because, once it does, it could be jammed in there for good. Once you have reached the depth take the core drill out and put a rod or bar down through the pilot hole and break the core out. It needs to snap at the depth you drilled, assuming it is 400mmm deep, which is a lot for concrete. When you are drilling walls you normally get a 100mm core out but in your case that won't happen.
@Plutonion26 жыл бұрын
What about if i want to cut a new hole (because the current 110mm hole is 2 inches to the left of where it should be) just about 50mm to the side of a current hole. Is it possible to to this with a core drill ? becuase only one side of the core will be cutting into brick.
@SkillBuilder6 жыл бұрын
Yes but you will need a piece of plywood with a hole in it to position the core on the wall. Once it starts in the wall it will be fine
@Buddy-po4hv Жыл бұрын
I've told the Mrs. that I need to remember what sex is like, so I can drill a hole, she told me the bit is undersized..
@shadow-Sun5 жыл бұрын
Diamond dust or grit NOT diamonds ...
@brnzhut3 жыл бұрын
Just like sex, lol
@craigmusicss2 жыл бұрын
Excellent video, quick, (like sex) informative and well explained 👍
@JohnnieE19614 жыл бұрын
Cheers Roger, very informative. Sex? I'd probably be better at drilling core holes.
@SkillBuilder4 жыл бұрын
For a man drilling is intuitive but we need to practice with sex. Women fail to appreciate just how many hours we need to put in before we become perfect. They think a couple of hours a week is enough to perfect the art and it isn't.
@berkshirekatie80696 жыл бұрын
Omg what's sex got to do with it? Hehehehe your dirty mind Rodger
@umairahmed73445 жыл бұрын
Bad language toward the end(in and out) rest is good explanation
@1860wright Жыл бұрын
Hi what make do you recommend
@SkillBuilder Жыл бұрын
Corefix
@1860wright Жыл бұрын
@@SkillBuilder hi thanks for your reply I went on their website i can’t see where they sell the bits. Do they only supply a service ?