i forgot the formula...

[sammy]

hi,

if i use a 2 3/8 hole saw to drill a hole in a door what will the diameter of the circle be? (guess i should go back to high school, eh)?

thanks,

sammy

[Mike in Arkansas]

[Oughtsix]

The formula is E = MC^2.

But a 2 3/8" hole saw will usually make a 2 3/8" diameter hole. The radius will be 1 3/16 and the circumference will be 1 3/16 x 3.1415

[tom]

How thick is the hole saw blade? Tom

[tom]

Or rather, kerf. Tom

[cselby]

That would be piD or 3.14x diameter

Pete

[sammy]

whoops. meant circumference. but i figured it out. sorry for the confusion.

thanks,

sammy

[Mike O.]

It will be 2 3/8" and the wrong size for your door knob. Your standard door knob will need a 2 1/8" hole.

Mike O.

[Patriarch]

"Oughtsix" wrote in news:1173137542.180010.274000@

30g2000cwc.googlegroups.com:

pi * d = circumference, no? (2 3/8 * 3.1415) ?

Patriarch

[Edwin Pawlowski]

That would be d x 1 In this case, 2.375 x 1.0000000 = 2.375

Don't stop at high school, keep going back.

[Leon]

Actually, the diameter, what he asked for, is the width of the hole, 2 3/8". I guess he assumes that the diameter of the hole that he drills with a 2

3/8" hole saw will be different because of the kerf.

[Leon]

Did he mention a door knob? ;~)

[Patriarch]

"Leon" wrote in news:mUdHh.7404$ [e-mail]:

The OP asked a different question than Oughtsix tried to answer. And Oughtsix has been out of geometry class for a while, so I tried to correct that.

Do I still not win? ;)

BTW, Leon, nice square jig in ABPW today.

Patriarch

[Leon]

2 points for Jonny on the spot. ;~)

Thanks, the original posted jig inspired me to design one that would not need any measurements to interfere with an accurate build.

[Oughtsix]

Yep, my highschool geometry is turning over in her grave.

[Puckdropper]

"Oughtsix" wrote in news:1173222201.610674.183610 @c51g2000cwc.googlegroups.com:

Your high school English teacher probably isn't doing much better. ;-)

Puckdropper

[Mike O.]

I guess I've worked too many doors!

Mike O.

[Morris Dovey]

sammy wrote: | hi, | | if i use a 2 3/8 hole saw to drill a hole in a door what will the | diameter of the circle be? (guess i should go back to high school, | eh)?

D = D

:-D

-- Morris Dovey DeSoto Solar DeSoto, Iowa USA