I am installing my first door knob

[JoeFahey]

I bought a new doorknob to replace my old one. I took out my old one, and cleaned out the inside. Everything seems like it will go fine, except the round hole I need to cut through the door from front to back. It says I need to drill a 2-1/8" hole. The largest bit I have is ~1". Do they make spade bits that are 2-1/8"? What type of bit would you suggest for such a hole?

Also, the strike plate the goes on the wall for the door will need to have a larger carved out hole. I have a chisel. Is this the recommended tool for this job?

Thanks.

 

[KLin]

Are you talking actual drill bits or hole saws?

 

[JoeFahey]

Originally posted by: KLin
Are you talking actual drill bits or hole saws?

Whatever you should use to drill the 2-1/8" hole. I am now assuming that I use a hole saw.

 

[KLin]

2 1/8" hole saw...

 

[speed01]

Run down to the local hardware store and grab a doorknob installation kit. It should come with the spade bit for the bolt and the hole saw for the knob..

Speed

 

[JoeFahey]

Damn, I was trying to remember the name...

 

[olds]

Good luck getting a hole saw started in the old hole.

 

[Farang]

Remember to get a polishing kit.

 

[JoeFahey]

Originally posted by: oldsmoboat
Good luck getting a hole saw started in the old hole.

Fortunately there is already a small 2-1/8" hole started. It must have been to embed the old knob or something.

 

[speed01]

Just thought of something, are you going to cut a new hole because the directions say to or because the new doorknob won't fit? I know this may be a dumb question but it wasn't specified if you already tried the new knob..

Speed

 

[olds]

Originally posted by: JoeFahey

Originally posted by: oldsmoboat
Good luck getting a hole saw started in the old hole.

Fortunately there is already a small 2-1/8" hole started. It must have been to embed the old knob or something.

You lucked out. The only other way I know to do it is to tack another piece of wood over the old hole and shoot for the center of the existing hole.

 

[alkemyst]

well a hole saw is a drill bit.

Harborfrieght will probably be your best bet for a one deal job. I bought a nice set (1"-3") at a lowes or home depot that was on clearance for being an open/returned item...saved about 75% off new.

If you do use a hole saw, make sure you use one with a center drill bit. They may not have instructions for this, but basically the center of the saw accomodates a 1/4" drill bit...there should be a set screw to secure it.

 

[JoeFahey]

Originally posted by: speed01
Just thought of something, are you going to cut a new hole because the directions say to or because the new doorknob won't fit? I know this may be a dumb question but it wasn't specified if you already tried the new knob..

Speed

The directions said so.

 

[olds]

Originally posted by: alkemyst
well a hole saw is a drill bit.

Harborfrieght will probably be your best bet for a one deal job. I bought a nice set (1"-3") at a lowes or home depot that was on clearance for being an open/returned item...saved about 75% off new.

If you do use a hole saw, make sure you use one with a center drill bit. They may not have instructions for this, but basically the center of the saw accomodates a 1/4" drill bit...there should be a set screw to secure it.

So you're saying to use a drill bit with his drill bit?

 

[speed01]

Just for giggles, try the new one in the old hole. If it works, jobs done..

Speed

 

[olds]

As far as the striker plate:
Remove old striker
Center new striker over old
Trace with a sharp pencil
Cut out with a chisel

 

[speed01]

Originally posted by: oldsmoboat
As far as the striker plate:
Remove old striker
Center new striker over old
Trace with a sharp pencil
Cut out with a chisel

If that's even needed also. Most doorknobs and strikers I've replaced fit just fine in the existing recesses and holes. No sense making more work than needed..However, if you do need to, ^^^ that's how.

Speed

 

[olds]

Originally posted by: speed01

Originally posted by: oldsmoboat
As far as the striker plate:
Remove old striker
Center new striker over old
Trace with a sharp pencil
Cut out with a chisel

If that's even needed also. Most doorknobs and strikers I've replaced fit just fine in the existing recesses and holes. No sense making more work than needed..However, if you do need to, ^^^ that's how.

Speed

I also use 3" drywall screws for the striker. Makes it harder to kick the door in when the screws are into the frame and not just the jamb.

 

[KLin]

Originally posted by: oldsmoboat

Originally posted by: speed01

Originally posted by: oldsmoboat
As far as the striker plate:
Remove old striker
Center new striker over old
Trace with a sharp pencil
Cut out with a chisel

If that's even needed also. Most doorknobs and strikers I've replaced fit just fine in the existing recesses and holes. No sense making more work than needed..However, if you do need to, ^^^ that's how.

Speed

I also use 3" drywall screws for the striker. Makes it harder to kick the door in when the screws are into the frame and not just the jamb.

Now that's a good idea. I'm going to have to remember that. :thumbsup:

 

[JoeFahey]

Originally posted by: oldsmoboat

Originally posted by: speed01

Originally posted by: oldsmoboat
As far as the striker plate:
Remove old striker
Center new striker over old
Trace with a sharp pencil
Cut out with a chisel

If that's even needed also. Most doorknobs and strikers I've replaced fit just fine in the existing recesses and holes. No sense making more work than needed..However, if you do need to, ^^^ that's how.

Speed

I also use 3" drywall screws for the striker. Makes it harder to kick the door in when the screws are into the frame and not just the jamb.

I don't think I am going to ask why you are afraid to have it kicked in...

 

[0roo0roo]

Originally posted by: KLin

Originally posted by: oldsmoboat

Originally posted by: speed01

Originally posted by: oldsmoboat
As far as the striker plate:
Remove old striker
Center new striker over old
Trace with a sharp pencil
Cut out with a chisel

If that's even needed also. Most doorknobs and strikers I've replaced fit just fine in the existing recesses and holes. No sense making more work than needed..However, if you do need to, ^^^ that's how.

Speed

I also use 3" drywall screws for the striker. Makes it harder to kick the door in when the screws are into the frame and not just the jamb.

Now that's a good idea. I'm going to have to remember that. :thumbsup:

well i bought a cheap door set once and its screws were definetly short, more expensive shlage model had a much sturdier strike plate/plastic thingie for reinforcing the hole and 3" screws included.