How to enlarge an existing hole saw hole
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- Опубліковано 25 чер 2024
- This video tutorial shows the 3 best methods to enlarge an existing hole saw hole.
A while ago I did a video tutorial on how to install a new downlight and enlarge the existing downlight hole with a specially made jig. Today I will revisit that that method and show you 2 other methods of enlarging existing hole saw holes. The problem with trying to enlarge a holesaw hole is that there is no longer a guide to keep the hole saw centralised and true because the central drill bit or arbor is no longer able to engage the material being drilled so it tends to wobble and the resulting hole is therefore not neat or circular.
Method: 1. Use a jig to central hole saw central drill bit. For this method you don’t need to have the original hole saw size available. So this method is useful when you do not have a hole saw of the original size.
Method: 2. Mount the original (smaller) hole saw inside the new hole saw on the same arbor, if you have enough thread. If you don’t have enough thread then will need to use a bolt of the same thread as the hole saws, bolt them together and grip the other end of the bolt in the drill chuck.
Method: 3. Again you will need access to the original hole saw size for this method. Cut a circular wooden block with the original hole saw and mount it with spacers on the new (larger) hole saw’s central guide drill. The wooden circle will not fit snugly in the original hole saw’s hole because of the thickness of cut the hole saw. This can be corrected with a bit of insulation tape wound around the circumference, remember to wind it in the direction opposite to the drill motion (anticlockwise) so that the end of the tape does not lift and unwind when you are drilling.
Here are some key moments in the video:
00:00 Beginning
00:23 The problem faced when enlarging a hole saw hole.
01:00 Description of hole saw enlargement method #1
01:33 How the jig for enlarging a hole saw hole works
02:31 Description of hole saw enlargement method #2
03:27 Description of hole saw enlargement method #3
05:29 Demonstration of hole saw enlargement method #1
06:00 Demonstration of hole saw enlargement method #2
06:27 Demonstration of hole saw enlargement method #3
06:43 If you found this useful please like, share and subscribe. Comments are most welcome.
The blog article can be accessed here: basiclowdown.com/how-to-enlar...
Comments are most welcome, if you decide to try this please send us some feedback☺️ Why not visit our channel and browse through our other videos? / annerasmus
Short Disclaimer/disclosure: My videos/articles are for informational and educational purposes only, you should consult with a professional before attempting anything seen or done in my videos/articles. Please read full disclaimer here: basiclowdown.com/disclaimer-di...
Comments are most welcome, try this and send us some feedback☺️ Why not visit our channel and browse through our other videos? ua-cam.com/users/AnnErasmus
Thanks Matt
Once again, thanks
Thank you! The best methods yet.
You are most welcome 😊👍
This is what youtube is about! Thanks!
You are most welcome, thanks for the kind comment 👍😊
Well, it was nice to see multiple stratagies for enlarging a hole. The first one even allows for making a new center if drilling near an obstruction like a joist or drainpipe. I suspect getting the original center will be only an estimate, but most of the time, small deviations won't really matter.
Thanks for your feedback 👍😊
best video and three examples...wow this guy has saved me destroying this door. came across this problem and glad i found this video.
Thanks for your feedback 😊👍
Excelente vídeo! I watched so many videos how to get the doorknob bigger without mess it up and and your video and the way you explain and demonstrate it is perfect. Thank you so much for sharing
You are most welcome, thanks for your feedback 😊👍
I used option 2 and it saved me so much time! Thanks!
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Than you, very helpful ! Good to hear a South African! You obviously don’t live here anymore, the stud finder on another video gives it away 😅
You are most welcome. Well spotted, we live in South Australia. Thanks for your comment 👍❤️
Perfect video!
Thank you for the excellent tips.
Thanks for the kind words 👍
Excellent vid! These tips are so helpful and useful! Brilliant!😀
Thanks Mario, I always appreciate your support 😊👍
I been using the method 2 for years, its the most effective way i found, except arbors these days have such a short thread, need to find the right one
I have found that too. Good advice, thanks for sharing 👍😊
Excellent video! Very helpful in my enlarging a hole for my backup generator cord.
Thanks for your feedback 👍😊
very helpful tips, thanks
You are most welcome 😊👍
I will try the option 2. Thank you a lot for the video.
You are most welcome. Here is one more option to consider ua-cam.com/video/3ZMM-wPCwyY/v-deo.htmlsi=IzOr3tJE77mwhVG-
This is awesome! I'm an electrician and I really wish I knew about these tips before. Thank you sir!
You are most welcome thanks for your feedback 👍😊
Great stuff! Thanks for posting this.
You are most welcome 👍😊
Brilliant solutions, thanks.
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Great video thank you 😊
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The last method worked weel for me. Thanks a lot for the tip.
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This is pretty great! Thank you!
You are most welcome 😊👍
Spot on with these methods, I found a couple of videos on UA-cam but they only focused on single methods. To understand all the methodologies first is the way to go so we can select the best option then.
In my case I am widening a hole in a caravan roof so it's a tricky one .
Thanks
You are most welcome. Pleased this was of some help, good luck with your project 👍😊
Greetings from the UK, was struggling until I found this video tip2 worked a treat and I was able to get the job done without any delays or further expense, many thanks
G'day from South Australia. Well done, pleased that this helped. Thanks for the comment 😊👍
Very clear description of methods to be used. Thank you much. Will try the double hole saw method to enlarge an opening for new doorknobs. Apparently, “someone”, in the U.S. decided a few years ago that the “standard” size opening for a doorknobs will be 2-1/8”, which is larger than before. Thanks for the help.
Very frustrating I know , thanks for your comment 👍😊
Very well done. Thanks for sharing your expertize.
Thanks, you are most welcome 😊👍
Very thorough. Awesome! 👌😍🙏
Many thanks for your kind words 😊👍
Very Informative Video Sir, Thank You.
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Thank you! These tips are so helpful. Been figuring out how to solve that problem. Your vid is so clear and helpful. 👍👍👍
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Excellent methods
Many thanks 👍😊
very informative...used the two circle cutter method! thx👍
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I like the 2nd method, thanks
Great, thanks. Hope your project turns out well. 😊👍
Good video, thank you for the information
You are most welcome thanks for your comment 👍😊
I’m installing a transducer in my boat and will enlarge the existing thru hull hole with either method 2 or3.! Thanks for great vid
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Very clever, thanks
You are welcome!
Brilliant! Thank you
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excellent presentation
Thank you 😊
God bless this man.
Thank you 😊👍
Well done mate thank you
You are most welcome 👍😊
excellent video ,as they say in the classics -boer maak a plan
Thanks. Ja I live by that expression 👍😊
Thank you so much, this is brilliant. Today I put 21 holes in my ceiling for LED lights without double checking the size of the hole saw (went by what I saw online for the needed diameter). It is a 5" hole but I needed 6". I'm going to try the inserted method first tomorrow. If that doesn't suit me I have 21 scrap pieces of drywall on the floor to try the other method.
You are most welcome, good luck. You might also want to check this method ua-cam.com/video/3ZMM-wPCwyY/v-deo.html. If you screwed the template in place and fill the screw holes afterwards or may work just holding it in place while drilling? 😊👍
@@AnnErasmus I got it done with your method. The Milwaukee hole dozers I used, there wasn't a lot of gap (5 vs 6") and the height was maybe 1/4" difference, but it was enough to get it done. I did chew up some places but that's what drywall mud is for :)
very helpfull thank you
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Brilliant!
Thank you 😊👍
Thank you well done
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THANKS BRILLIANT
Thanks. You are most welcome 👍😊
Thanks dude, you really saved my ass
You are most welcome, thanks for your comment 😊👍
Thanks mate, some really great information there. On my channel I’m about to try and install some LED cup holders in some home theatre chairs, and the holes need to be about 5 to 10mm larger than the holes for the standard cup holders. I’m hoping to get it done with one of your methods. Perhaps number 2. Cheers and thanks for the help 👍
You are most welcome. I will subscribe to follow your progress. Good luck 👍😊
excellent my friend :) 😀
Thank you
Thanks,
You are most welcome,thanks for the comment 👍
Awesome. I've been scratching my head trying to work out how I will enlarge a hole in a porcelain handbasin. Hopefully method to will work for me.
I have never tried it on porcelain, good luck, let us know how it goes. Thanks for the comment 😊👍
Method #4. Put the larger hole saw through a scrap of anything and secure it over the previous hole. Now the hole saw will be piloted by the rim. It doesn’t need to be concentric. Pilot blocks can be used with all kinds of drills.
Thanks for sharing 😊👍
#4 🙂Piece of 1/2" plywood drill hole with your desired hole saw size..now use Piece of plywood as a pilot around the outside, super easy to line up with smaller hole as well.
Fantastic, thanks for sharing 👍😊
I'm going to try using the inside, instead of the outside, as a pilot for the hole saw. That way I won't have extra holes from mounting the plywood, because the holes will be inside the cut pattern. I hope it works.
Thanks for this, cut a hole in a rain barrel and when the tap arrived, it was larger than what was specified... instead of returning it, just gonna make the hole big enough!
You are most welcome, good luck 👍😊
How did that work for you? I have a hard plastic rainbarrel with a broken outlet at the bottom. The resulting hole in the side of the barrel is an irregular shape and roughly 7/8" diameter. I need to drill a 1 1/4" hole for the new spigot. I don't think any of these methods will work. Any ideas?
After hunting around, i realized i had a step drill that had 1 1/4 and 1 3/8" steps. i just had to be careful to not go past the 1 1/4" step. The resulting hole was a little rough, but a little sandpaper cleaned that up. I added some sealant between the barrel and the internally threaded plastic seal for good measure. After the next big rain, i'll know if it's holding.
@@dalepetty5490 I modified the idea. I cut a plug of plywood roughly to size of existing hole. Plugged and punched a guide drill hole into the plug, then used that guide hole in the plywood to enlarge the existing hole evenly. The reason I had to do this way was because the new hole I wanted was not centered on the old hole, but slightly above so the tap didn't get the dirtiest water at the bottom. If you have issues with the plug slipping, put a few screws thru the plywood plug into barrel to temporarily hold it. Obviously in an area you will cut out later. Use low power setting on drill and go slowly. Works good.
@@dalepetty5490 pipe thread tape also helps to keep the water from leaking. Wrap it around liberally and torque it down.
Tnx
You are most welcome 😊👍
This was very helpful, thank you. I have a project to go through my sheet metal garage, where a 1/2" hole originally mounted floodlights. I have pre-drilled out a 4" hole (4 1/8" precisely) in plywood. To drill a hole in which to set my recessed electrical box, I plan to screw the 4" cutout from the plywood into the steel (approximately centered over the original hole), then set my hole saw over the cutouts and use that as a guide. Do you think that will work?
It should work, just take it slow. Good luck 👍😊
How would you extend the Same Diameter a Bit to one Side?
I would use the jig but secure it so the guide hole is off centre. Hope this helps, thanks for your comment 👍
Has anyone tried the double hole saw methed on thin metal soffits? I put in 4 inch can lights using a 4 inch hole bit. Unfortunately the fit is so tight, that it pushes/bends the soffit. If I can just increase the holes a little bit I should be able to prevent that. ( I predrilled all four holes for the can lights)
Any ideas out there? All I can think of is to cut a wooden disc out with that hole saw, then put a bolt through the centre hole and then wrap sandpaper around the disc and put the centre bolt on a drill and widen your hole slightly with the sandpaper on the spinning disc??👍😊
Nice, thx!
But what if I need a hole to be smaller?🤔
You are most welcome 👍
How to enlarge hole if it needs to be offset from center?
Best to use a jig and fix it off centre to the original hole. Here is another method that may help. ua-cam.com/video/3ZMM-wPCwyY/v-deo.htmlsi=hHJCPTUTtBTFCz1b
Good luck 😊👍
Very informative, however when having to replace recessed lights on a sheetrock ceiling, method one goes down the toilet (who wants screw marks! on the ceiling) and If you don't have the original how saw (and in my case even if I get it it does not fit the bit) then method 2 and 3 are out, so no solution for me :/
👍😊
The 4th solution is to sand down the downlight to the size of your hole
Thanks for sharing 👍😊
Hey granpa its works :)) thanks
You are most welcome 😁👍
Good vid
I agree
thanks