How to Enlarge a Hole With a Hole Saw
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- Опубліковано 8 лип 2024
- Because hole saws rely on a pilot bit to guide them, it’s tough to enlarge an existing hole because there’s no wood for the pilot bit to bite. Use this technique to safely make an existing hole larger using a hole saw.
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I love that you only took 30 seconds to tell me how to do it. Thank you
Same.
Word
Agreed. I wish all "tips" videos were like this.
This 30 second video was worth the annual subscription. Thanks FHB 👍
Another way would be to use the bigger hole saw on a separate board. Then clamp the separate board in front of the small hole so the board acts as a template. Drill bigger hole guided by the template.
This is the way I learned many years ago on old doors with small ½ inch holes for the original locks and we needed to install modern lock sets, another advantage is you can reposition the hole as needed.
Hi. Is there a video of how this is done?
@@AlexeyDnepr cut new hole in board. Place board on center where you want the new hole. Clamp. Drill hole. If you need a video, don't try this at home.
Great ideas… Thank you.
Centering the larger hole would take a minute or two longer.
I just use the smaller hole saw n the larger one at the same time. The small hole saw is a perfect guide
If you don't have the right size (smaller) hole saw, you can also attach a larger (than the larger hole saw) piece of board or plywood to the wood you need the hole in and drill away. This method also allow you to drill the new hole offcenter from the existing hole.
My God, where was this video 10 years ago.
This was the best method of all the "how to enlarge a hole" videos I saw. It's fool proof. My new deadbolt on my old front door looks great! Both the bolt and bore holes had to be enlarged.
Thank you for making a video that is exactly as long as it needs to be! I'm going to use this method today 😀
Brief, to the point and simple. Thank you, you have helped me solve a problem.
Genius, would never have thought of that. Thanks mate
Great idea
Great tip! Thank you
Very ingenious. Thanks.
That's an awesome tip!
Saved me a headache. Thanks for keeping it short and sweet.
Straight to the point!!!
Outstanding! Worked perfectly! Thank you for this video!
Great idea!
Top tip, thank you. I have new larger ceiling spot lights to fit and this is the solution.
Simple solution, and a damn good one!
Great solution - thank you.
Thanks!
That’s a great idea and video thanks
I would have never guessed. You just made my life more simple. Tank ye.
I love this.. Thank you so much.
Great video, going to try this. Thanks!
Thanks for sharing
This is far and beyond amazing trick 👌👏🙏
Brilliant. Thank you.
That’s great Thanks
thank you sir
Great info
Thank you! I’ve been scratching my head on this for ages!
Try knitting.
This was on AvE video a long time ago. Still a good work around and top tip.
Mind blown!
Thanks for an excellent tip on how to enlarge a hole.
Thats actually very cleaver! Thanks!
The best way so far, thank u
Perfect quick tip, thanks heaps ;)
I bought a new stainless steel chronical paid $500.00 for it, it has an 1/2 hole for a thermowell, but in that space i needed a 1-1/2 tri clover fitting,
So i used this method to cut a bigger hole, one slip and i have $500.00 worth of junk. This method worked very well, the takeaway here is needed to make a 1/2 inch plug from metal not wood for cutting into a metal tank, but the wood did work in this case, but was broken by the thin piot hole. Thank you for the video!
You saved me, thanks!!
Ingenious!
Good idea
It's helpful video tanks
That’s brilliant. Simple but brilliant
Good idea. There are other ways. Thank you. Subscribed.
The plug will be slightly smaller than the hole, so I think there will be a bit of wobble till the hole saw bites and begins cutting with this method. No big deal for rough hole cutting as for construction, plumbing etc. If you want more accuracy, you can drill a piece of large scrap to the larger size, clamp the drilled scrap with the larger hole centered over the smaller hole, and use it as a guide sleeve for the larger hole saw. I think Timothy Dillon also refers to this method in the second reply to the previous comment.
Why didn't I think of this 15 years ago?!? As simple as it is brilliant.
Freakin' brilliant!
Thanks for this. I have this issue with a rain barrel and need to make a hole larger. I'll give this a try, but it needs to be exact since I don't want water leaks. Wish me luck.
Thanks for the tip!
A possibly-easier method -- if you have access -- is to put a cross brace on the back side, drill your centered punch, and use that for the hole saw. When done, remove the back brace. Close to 100% accurate.
Another method - fill the hole with wood putty, let dry, and redo. Takes longer but is 100% accurate.
Another method - mount your drill on a clamp so it's guaranteed centered... like a "horizontal drill press" with the center hitting two lines you've set with lines on the hole. Then drill your bigger hole. Not so accurate, but not so longer in time either.
Finally -- I hate to say it -- if you have a hole that is of too small a diameter -- measure twice!!
Thank you :)
I love this video. Frikken awesome!
Gracias hoy aprendi algo nuevo
Good deal
Genius!
Thats a damn good idea.
Smart!
Awesome. I may need to do this to a plastic RV waste tank. I used one type of grommet that isn't working well for the fitment, with a 2-5/8" hole, and I may need to change it to a 3" hole for a uniseal. Now I know how to go about it. I think I even kept the original "hole" I cut out so I can use that as the guide, perhaps. Thanks!
For a waste tank, I would invest the $30 or so in a bulkhead fitting. Uniseals put a lot of side pressure on the hole, and if there is even a tiny crack, it can split the tank. Bulkheads pinch a gasket, such as silicon, into both sides of the wall of the tank instead of pressing rubber into the side of the hole like the uniseal does
WTF...why did I not think of this!!!thats it im subscribing to this freaking channel..
Good idea, as long as you have the right size hole saw for the original hole.
This will work, and is a good way to solve this problem, as long as the centers of both holes (the existing hole and the new hole to be drilled) are at the same point..
Correct. If you need to offset the whole a tiny bit then you will need a different solution
Mind blown
Only problem with that is if you are enlarging a hole you did not make or do not have a size for. Just use your hole saw to make the hole size you need in a scrap piece of wood then use that as a guide over the existing hole, this also works even if you don't have a perfectly round hole
Great tip, Donald. That certainly is another smart way to do this. You could clamp or screw the jig you've made out of a scrap of wood onto the surface you're drilling into, basically doing the inverted version of the tip we've shown here.
@@finehomebuildingmagazine love the content though
@@finehomebuildingmagazine you are actually sawing a hole with a hole saw. 😉
Dang! Why did I not think of this one?
Cool
Drill at full blast, gently notch a lip, then tilt the hole saw into the material. I cut 100 holes a day ranging from 1" to 2.5" . I have never used an arbor. When you makes hundreds of holes, it makes the slug a none issue as well.
I do use an arbor when cutting holes into steel pipe. If you don't tou can lose the slug into the pipe.
If you've got cheapo blunt holesaws like me it tends to do more walking than cutting. But I'm just an occasional DIYer.
so smart. would you recommend this if you want to go from a 75mm hole to an 80mm hole?
Smaller diameter hole saws are longer than bigger diameter. If you can thread the smaller diameter hole saw inside the bigger diameter hole saw, you'll notice that the smaller protudes. So you can use the smaller hole saw as a pilot guide. Sorry for my english,
I drill the larger hole in a piece of scrap, hold/clamp that piece of scrap over the smaller hole and start drilling using the scrap as a guide/template. Once you have drilled a bit, you can remove the piece of scrap and finish drilling. This works especially well if your smaller hole used a smaller drill bit in the centre. This will also allow you to reposition the hole if the original was not quite in the right position.
If your hole saw arbor has enough thread length, you can also screw the smaller hole saw on inside the larger one. I did that all the time to enlarge crossbores for door hardware
Thanks a lot!
I've been wasting time talking to people with no imagination :)
37 seconds of this and I know what to do.
People like yourself.
@@tonylawrence9157or you.
Let's not forget why you arrived at this video.
If the hole is not circular, Put your drill in 2nd gear and practice plunging it into dry wall scraps at full speed. It should make a big enough channel that you can back off and slowly chip away at it.
Some holesaw arbors allow you to double up on the holesaw bits and use the smaller inside bit as a guide too
I do a similar thing through steel bars but much longer.
F$cking awesome!!
Never thought about that one. I would typically make a female jig. Great tip, hope I remember
Most hole saw arbors have enough thread to screw the existing hole size inside the larger 😁👍
Or you can put your drill on reverse to allow for stability. Thereafter place the drill on forward after creating a deep enough hole.
75% of the comments are “here’s another way to do it.....”
What If you want to enlarge the Same Diameter a few inch to one Side? Any good solution ideas? 🤔
Just twist the smaller hole saw into the same arbor inside bigger one. Job done.
What is the maximum diameter of such a nozzle Hole Saw? I need to drill a hole with a diameter of 20-25 cm, is it possible?
The way i do it is to screw the original size hole saw onto the bit inside the bigger one, basically same as using the plug, at least with mine i can fit 2 onto it, maybe not all brands
so clever and obvious.... once you know how. Now I know how.
👏🏻👏🏻👏🏻
Yo dawg! We heard you like hole saws so we put a hole saw on your hole saw so you can saw your holes while you're sawing your holes!
what about on pvc sir? how to enlarge it?
or just use an Oops Arbor by Starrett and.
What if I have a square hole, like in a low voltage box cover, and I need a round hole? I ordered blank nylon cover plates to put a little 12v switch in for some LED shop lights but they sent me cover plates with a big square hole. I feel like I can make these work but I’m not sure how. And all I’ve got that size is a dull SpeeD Bor bit
if you cut a hole in a larger piece of wood with same hole saw you can use the wood as a guide over the square hole
Like chilly said. Take a piece of scrap and put the size hole you want in it than clamp that to what you want to put a hole in.
They make an oops arbor that holds the smaller hole saw cup in place of the pilot bit.
what if i need to enlarge a hole in a fiberglass shower that has plumbing in the middle ?
Genus’s
Just what my wall needs. A bigger hole.
I win where was this video 30 years ago? : - )
My only concern is won’t that be harder to get out of the hole saw I mean two pieces instead of one maybe I’m crazy tho somebody lmk
Now don't I feel thick! So simple
But I don’t have the center piece anymore, it’s gone, so now what?
As some of the other commenters pointed out, you could also drill into a scrap of wood with the hole saw of your choice, and then clamp or screw that scrap over the location you want to drill the new hole to use as a guide jig.
Or screw on the small hole saw inside the bigger one
Or punch the hole with the size needed the put that wood on the door clamp it as a jog and drill 😊
Elite hack