What size hole saw do I need for 3/4" pipe?

[Oliver1655]

Chad, If you want to enlarge the hole consider a step bit. There are several options available and it will allow you to go to 1 1/16". If you continue to drill little further, it will give you an angle edge to your hole which will allow for better weld penetration.
- On a different note, if you need to go from hole saw hole to another, if the first hole saw will fit inside the new size, some of the arbors can be taken apart and you screw the old size saw close to the pilot bit and the larger saw on the outside over the smaller size saw. (The one I use for this is made by Lenox.) It works very well. (I had to take the retaining clip off mine to allow it to come apart.)
- I have found putting a ring of modeling clay around the hole like a dam / levee, you can make a pool of lubricant to help keep your saw cooler. This also works well when drilling in glass.

 

[chad22]

The hole saw arrived Friday and I used it to drill the holes needed. The hole from the 1-1/8" was just a bit big but not enough to be an issue. I welded the pipes into the hole and it worked out like it should.


Chad

 

[ampa]

Hi Chad....here's what I had to do one time.....I needed to beef up my 3 pt.rear graderblade and had a welder weld some extra 1/4 plate on top the original 1/4 plate...I then needed to drill a hole into 1/4 stock and large enough for the 1" pivot bolt...I had to find a drill @ 1-1/16....

I found one and it was a big drill.... it cost me close $100 cdn....but it done the job....a drill bit would be more precise....I own a set of metal holes saws but not the size I needed for this project....would this be a solution to your issue ?......maybe I misread your intentions.... I thought I'd jump in anyhow and try and help out a fellow forum member..... P/S.... Hi Chad glad to hear you got er done.......take care Ampa <>