Make a hole in the door for the lock. Tools for mortising locks and latches
To cut a lock in the interior door is not so difficult, but the work will require tools:
- Drill with a 25 mm drill bit and/or 22-23 mm feather drill bit (there are some locks with smaller sizes, so you may need a 20 mm feather/tip drill bit). With this tool to cut holes for the lock in the door leaf.
- Hammer drill 16 mm. to make a notch in the door rib and the mating part in the jamb.
It is better to work with a crown on a wooden door
Not so expensive and rare tools. If you do not have a drill bit and bit, you can buy at any building supermarket or market. Since we will not drill stone, too expensive do not buy. ordinary drill bits or drill bits for wood.
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Complete set for mortise locks in interior doors: feather drill, bit holder, core bit
A few words about what is better. a drill bit or a feather drill. It is easier and faster to cut a hole in the door for the lock with a crown cutter and in this case there are less chips. But it is not so convenient to work with a crown at the end, and the hole turns out more than necessary. It takes a little longer to drill with a stylus and causes more chips, but it is easier to control the process. In general, there is no big difference, but most often, the hole in the web is made with a crown, and at the end. with a pen. But it is possible to use a feather drill bit everywhere.
One more thing: a standard drill bit has a diameter of 25 mm, and you need a hole 22-23 mm under the lock. The extra 2 mm are easily covered with decorative elements, but at very narrow door these extra millimeters can become critical.
How to install a lock in the door. Mortising the interior door lock with a router.
In this article we will consider a faster method of mortise the lock into the inner door comparing to the manual method. This method greatly speeds up the work, and if you need to install the lock in several doors, then this is what you need.
Start cutting by marking out the door leaf. I install the lock on the interior door making sure the handle is at 900mm from the bottom of the door. I put this size on the door leaf.
I put the lock to the door and line up the hole for the handle with the mark and outline the edges of the lock.
I find the middle from the thickness of the door leaf and run the fishing line.
I measure the thickness of the part of the lock, which will be later cut into the door. In my case it is 12 mm. I take a 1-2 mm bigger drill bit and drill from the mark to the mark on the door. I try to make the holes one right after the other.
Then I use the same drill to drill the holes in the longitudinal groove.
Smooth the lock groove with a chisel. I didn’t have a 13-14 mm drill bit, so I had to end up trimming with a router to get enough width of the groove for the lock. But if the drill bit had the right diameter, you would not have to trim anything, we got about this groove, only with an uneven edge.
Put the lock on and see if it fits well.
If everything is OK, I mark the pad of the lock on the door leaf with a knife.
I take a mill with the same diameter as the width of the pad of the lock, usually it’s 18-20 mm. Adjusting the depth of the mill and milling a groove. How to align the cutter is described here. How to install the hinges
Apply the lock and it should fit snugly.
Mark the holes for the handle and the latch. I put the lock on the side of the door, align it with the edge of the door and make sure the edges are aligned with the milled edges of the groove.
Drill the holes for the handle and the latch. I use a 20mm diameter Fostner sleeves.
I put the lock in its place and drill a place for self-tapping screws, for this purpose it is necessary to use a drill bit smaller in diameter than the self-tapping screw.
What is a mill and what are the advantages of it during the installation of the lock in the door??
The hand router (popularly known as a mill) once made a breakthrough in woodworking, because with such a tool, complicated woodcarving can be done practically “by hand. The advantage of a hand-held router is its portability. In the daily work of a carpenter, there can be various situations where you need to perform work on the spot. Previously, you had either to drag the product to the workshop or use a chisel and therefore get a rougher and more approximate result.
Simply take the router with you, bring it indoors, put it on the roof or into other hard-to-reach places and get the job done without any extra time expenditure. Door installers have made their work a lot easier by starting to use a hand router.
Using the right router, you can cut into the locking device many times faster, saving an extra 30 minutes of time. This is quite significant when you consider that the installation of an interior door on a turnkey specialist takes 2 hours.
Do not forget that in the past craftsmen had to “hollow out” with a chisel a deep groove for the lock. Anyone who has ever “wielded” a chisel knows how time-consuming and demanding this work can be, not to mention the risks involved. Because the chisel can jump out and damage the surface of the door leaf if it is moved carelessly. In this case, on the one hand, the master will discredit himself, but on the other hand, he will suffer financially, because he will pay for a new door from his
Cutter varieties: which ones are useful for the installation of the locking device?
There are an enormous number of router bits for hand routers these days. With their help, an unsightly piece of wood can be transformed in skillful hands into a finished product before your eyes. All milling cutters can be roughly divided into three large groups.
- Edge chisels. They are used for making different carved elements on the surface of the material, they are also useful for making the edges of products.
- Slotted. They are used for the manufacture of grooves, recesses, indentations, grooves of any depth on any wooden surfaces.
- Figurines. They are intended for creating various carved decorative elements on furniture fronts, on the surfaces of door leafs and other products.
For mortise locks in the interior door leafs exactly a mortise mill of suitable length is required. It costs nothing to cut a perfect groove in the door leaf. True, it can be difficult to install door hinges, because you also have to cut straight slots for them. But if you have an overrunning cutter handy, there are no problems at all.
Important! If you want to cut a big round hole in the door leaf, for example for the installation of a knob handle, you need a spiral mill for mortise locks.
Recommendations for the setting of the router for mortise door locks and hinges
Before you start using the hand router for mortising door locks, you must first carry out the necessary preparations. In particular, it is necessary to properly set the following parameters of such a power tool:
The depth of the groove that is created depends on the material thickness of the door hinge or the geometry of the mortise lock.
To adjust the equipment to a certain depth of milling for hinges or door locks, the following steps are necessary:
- Router should be placed on a flat and hard surface.
- Then the threaded element that secures the feed pin is loosened.
- The cutter to be machined is lowered to the level of the reference surface, and the number zero is set on the scale of the machining depth.
- If grooves for hinges will be created with the router, it is necessary to determine the thickness of the material from which they are made.
- The obtained value is set on the scale of the router’s feed pin.
The mortise tool must be securely fastened to the door leaf
To get a better idea of how to adjust the depth of processing, carried out by a hand router, you can watch the appropriate video.
If the lock mortise is planned with the router and it is necessary to make a groove of considerable depth in the face part of the door, the procedure is made in several steps, each of which removes a layer of wood not more than 5 mm thick.
Setting the speed of the tool, which will be used to perform processing, is carried out by experience. It is important to make sure that the cutter is not overloaded during the machining process and that the wood being machined does not catch fire. A special regulator on the router housing is used to set the rotational speed of the tool.