Milescraft1338 Lock Mate PLUS – Self Clamping, Professional Door Lock Installation Kit, Door Lock Jig for Wood/Metal Doors with 1-3/8” and 1-3/4” Thickness. Bi-Metal Cobalt Hole Saws Included

Selected the Milescraft door knob installation jig over the many other alternatives mainly because of the metal sleeve inside the 2 1/8" hole guide, plus overall favorable reviews. Used this to re-drill and install new door knob sets in eight doors with the old style door knobs with the smaller holes. The Milescraft kit worked great, the guide clamped very firmly to the doors, never slipped and didn't mar the door paint which was < 2 weeks old. There was no wear on the inside of the jig even after drilling eight holes. The supplied hole saws worked fine, no issues at all. I only used on wooden 1 3/8" interior residential doors, so cannot comment on suitability for oak or metal doors. 100% satisfied - would recommend without hesitation.To save time doing multiple doors I purchased a second arbor to eliminate hole saw blade changes (JIECHENG Bi-Metal Hole Saw Arbor Mandrel 3/8" Hex Shank with High Grade Pilot Drill bit worked great for the Milescraft 2 1/8" hole saw).

This is a miracle tool if you need to enlarge a lockset hole in a previously drilled door. A real life/door saver. I did six doors, tool still looks great.

Very cool tool to use

This was a great jig that got the work done. I chose this Milescraft model over Ryobi or Irwin because this one has a metal circle around the area you drill. It seems durable and was easy to use as long as you triple check your measurements. Also follow instructions to drill from the opposite side after the lead bit barely comes through.Only complaint was the hole saw bits were not superb, but they did the job on the one door I needed. I'm confident they can do many more doors, but as someone familiar with drill bits, I was not impressed by their quality.

This jig leaves far too much power in the hands of the user-error gods.I’ve used the Milescraft mortising kit for several years and have always disliked the lack of alignment precision. I fixed that with some slight modifications to the removable plastic templates. For multiple doors, I have used the Milescraft jig with a flush trim bit to make a longer jig board which provides a precise, repeatable template for all three hinges on the jamb and door plus strike plate, left or right handed.This LockMate PLUS has a similar flaw in that there isn’t a good way to precisely and repeatedly hit your vertical alignment mark. You either sight it through the big 2-1/8” hole or the tiny hole to the right of that. At first I thought the tiny hole *was* for alignment…NOPE! It’s for assembly of the clamp screw. As soon as you add the red 2-3/8” spacer, the tiny hole is covered and can’t be used for alignment. Sure I can drill a hole through the spacer but…why didn’t Milescraft?? A diamond or triangular hole - visible through the jig body AND the spacer - would facilitate fast, repeatable vertical alignment. With the number of slabs I have to install, I need to make a vertical alignment jig.Cumulatively, it’ll still save me time but it’s frustrating to invest more time making an alignment jig for this jig, like the manufacturer and design team never actually used the product in the field on more than one door. Watch the product video - they really gloss over the “align the LockMate with your mark” part. And forget about making a reference line on the top or bottom of the jig because it was clearly CAD’d in metric units, so you’d have to add or subtract 42.5mm from your bore centerline.The materials are good, particularly the metal bearings, and the plastic seems sturdy with strong reinforcement ribs. Five stars for these, one star for accuracy and repeatability.

The jig clamped securely to the door and made matching the holes a snap. The metal inserts make it feel more sturdy also. The hole saws were of good quality although having used them once I cannot speak to durability. I had to widen the hole for the knob as there was already a knob but no deadbolt on this door. The old hardware was smaller than new stuff so I had to solve that issue and using the smaller hole saw to line up the jig worked great. I was afraid that it would not work as well since I wouldn’t see the pilot hole and just had to go all the way through from one side. The saw and jig did great and I didn’t have a jagged exit on the other side. FWIW it was a wooden door. The only difficulty, and this is not unusual of this kind of hole saw, is that getting them off the adapter is tough. I hit the thing with penetrating oil and it helped but the adapter for larger one is pretty stuck. Fortunately that doesn’t keep you from getting the smaller one on the pilot drill and the smaller one is easier to remove. If you need to install door hardware, this kit is well worth it.

This was a replacement for a cheap set I bought at a big box store. It wore out and broke after 3 lock sets. This seems to be a lot better quality. The clamping system is great and easy to use. Love the spacer tool for boring out the deadbolt. Would be nice if it had a template for routing out the strike plate.

This kinda sorta made the job much easier, my only complant would be that there's no center "index" lines for the small hole on the door edge. When placing the jig on the door edge I had to place masking tape and mark it with a center line. Then when installing the jig you have to use your eye to determine if your centered on the door before drilling.. A simple line molded into the the jig representing the "center" of the hole would be very helpful. Without it my holes were not always exactly in the center of the edge of the door..