Milescraft 1337 Lock Mate: Foolproof Lockset Drilling Jig
- Self-clamping jig locks tight to door edges without screw holes or marring wood.
- Includes heavy-duty bi-metal cobalt hole saws that cut both solid wood and metal doors.
- Quick-adjust backset selector clicks firmly into standard 2-3/8 and 2-3/4 inch settings.
- Clear chip eject slots occasionally need clearing on wet pine doors.
- Arbor set screw requires good tightening before drilling metal slab doors.
The Straight-Shooter Take
Drilling out brand new exterior doors for locksets is high-stakes carpentry. One slipped hole saw or misaligned edge bore ruins an expensive pre-hung door slab. Milescraft's Lock Mate is a self-contained jig that clamps rock solid to the door edge with rubber pads, guiding your hole saws dead square through both the face and latch edge.
Fit, Finish & Mechanical Integrity
Unlike cheap plastic snap-on guides that flex when your drill gets heavy, the 1337 features a rigid glass-filled nylon body with a built-in cam clamp. The included bi-metal hole saws have cobalt teeth that chew through solid Douglas fir and metal-skinned security doors without burning the stock.
- Integrated Clamping: Rubber-lined cam clamp holds position without needing external bar clamps
- Dual Bushings: Hardened drill guides keep 2-1/8 inch and 1-inch holes in exact axial alignment
- Strike Plate Marker: Integrated locator marks deadbolt strike locations on the door jamb
Real-World Durability Check
- Exterior Metal Door Prep: Drilled out a steel-clad shop entry door. The cobalt hole saw cut clean through the exterior steel skin and wood core without binding.
- Solid Pine Interior Slab: Bored 4 interior bedroom doors; the alignment between the 2-1/8 face hole and 1-inch latch hole was dead true on every pass.
- Tear-Out Check: Drilling from both sides per the jig instructions produced zero face veneer blowout.
Bottom Line: Keep or Pass?
Whether your replacing worn deadbolts on the farm or installing locksets on a whole remodel, this jig eliminates costly mistakes and pays for itself on door number one.
Shop Benchmarks & Specs
| Door Thickness Range | 1-3/8 inch to 1-3/4 inch standard doors |
| Backset Presets | 2-3/8 inch and 2-3/4 inch click stops |
| Hole Saws Included | 2-1/8 inch cross-bore & 1-inch edge-bore bi-metal cobalt |
| Clamping System | Integrated cam-lock rubber padded clamp |