Features:

  • Designed to fit the most common lock sizes in use today
  • Works well with metal or wood doors
  • Includes hole saw consisting of durable M3 steel
  • Also includes backing plates reinforced to counteract warping
  • Backing plates also aid in easy disassembly from the mandrel
Perfect Jig

great product. Simple to use jig. Updated several doors to new handle size. Simple to setup, if you can use a measuring tape you can set this up. The only drawback is you can hit the tightening knob with the saw if you punch through, but you should be resetting the jig to the other side so you don’t tear out the door when you saw through anyway. I highly recommend this product.

I'm surprised how well it worked

I have an old metal door that has 1.5 inch hole. I needed to expand it to accept a 2 1/8 inch deadbolt housing. Since there was no material at the center of the hole there was nothing for a drill guide to bite into. So my hope was that this jig would hold the mandril steady enough to let me get the teeth to bite into the metal door. I already had a pre-existing deadbolt hole I could use so I was good there. Well it didn't go perfectly but it worked and other than a bit of a chewed up edge, that no one will ever see, it went fine! The locksmith wanted almost 300 dollars to do this job and even though I took a risk it worked out well. Some advice. Put a bit of mineral oil on the threads of the drill bit and on the outside of the mandril to prevent it sticking to the jig. If you're drilling into metal go slow and try to apply pressure evenly. Pull out often to see how the drill is tracking (note, if it's chattering all over and messing up the door, just stop, maybe give up before you ruin the door) and push a bit harder on the spots it hasn't bitten into yet. Once you're past the metal and into the wood you can go pretty fast because the metal door itself acts as a guide. In fact, i went all the way through from the inside and just kept going right to the other side, worked quite well. Again, pull out often and empty the accumulated wood, sawdust, etc. Measure 10 times and cut once. You literally get one shot at getting this right and if you mess it up you're basically going to have to pay for a whole new door. But with enough patience, measuring very carefully, drilling cautiously, this definitely can work to expand a 1.5 inch hole to a 2 1/8 inch hole. Good luck.

Use a Lenox hole saw with this DeWalt Superior Jig

For an old door with the wrong size hole I used a Lenox 2-1/8 hole saw and a Dewalt kit D180004, then cut a 1/2 inch plywood "backer" piece 5X5 traced out the circle on the Dewalt jig, and drilled a pilot hole with the hole saw in the circle center. I clamped the whole assembly when in position with 2 clamps. The drilling was very smooth so I will use this method for the other old doors. I used this combination based on information from different reviews.

I used this for 5 doors so far (more to ...

I used this for 5 doors so far (more to come) and it worked perfectly. As others point out, don't go all the way through the door. Do one side. Then when the drill portion pokes out the other side, move the hole saw to the other side. You don't need to remove the jig from the door.

This jig saves a lot of time

I was installing two new doors so I ordered this door lock jig. Wow what a time saver, all I had to do was measure how high up the door the striker was on the door frame, mark that on the new door then attach this jig to the door with the clamp on the jig and drill my lock and striker holes with the saws provided. easy peasy. It's very well made so I'm sure it will last quite sometime which is good as I have other doors I'm planning on replacing around the house.

Worked perfectly.

Worked perfectly on my 1949 door that I upgraded to a modern knob. I ordered 10 more knobs to finish the house with this jig. The width of my doors is 1 3/8" with a 2 3/8" set back for the knob. So yes, it works on the old dimensions. Just be careful drilling the latch hole on those thin doors. You only get 1/8 of wood on each side of the 1" bit so drill straight! Also, it's plastic so don't overtighten it on the door. You're just using it to start your bit.

Time saver!

This makes knob/lock installation a breeze! Read the reviews, they pretty much nail it. Don't overthink it, its is a plastic jig to make your drilling points, its not made of metal but gets the job done for cheap. Used to convert old 1940's era solid wood interior doors to modern handles/knobs without cheap paper templates. I had zero issues & set-up was easy. Could be used on metal doors, just use this jig to mark the templates to drill & remove it.

High quality life saver

What a life saver. Wow. This made my deadbolt installation so easy. The bits fit my drill perfectly and they cut thru my hard wood door with ease. High quality product.

5 minutes later the door with the new lockset was working like a champ

I just used this a few days ago to mount a new lockset on my Mom's back door. The Fire Dept had broken the old lockset to get in and assist my Mom who is in her 80's and had fallen. The door/lockset was ancient and a new lockset would not fit in the existing holes. The latch assembly that goes in the edge of the door and latches the door was a bigger circumference than the old one so I had to enlarge the hole to fit the new one. Once I adjusted the tool for the proper door thickness, and aligned it on the door and snugged down the clamp it was a piece of cake to use the included hole saw to make the bigger hold necessary. 5 minutes later the door with the new lockset was working like a champ.

Well designed jig for redrilling doorknob holes. Quality seems quite good.

This jig worked perfectly for me renovating an old house that had several doors drilled with holes not used as the standard today. Sure there are many workarounds to redrill doorknob holes but none as fast as this. And I was always highly confident the outcome was worth it. It did not fail me.

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