I over sized the opening approximately 3/8” to ensure the pocket top and bottom would accommodate the mortise lock body. I located and adjusted the mortising tool clamping mechanism above and below the area of the mortise pocket. Once I had made my marks for the installation, I needed to mount the Pro-Lok INJIG-MORT onto the door. If the door has a finish, use blue painter’s tape that can be written on and removed from a finished surface without causing damage. From this, I drew four horizontal lines on the lock edge of the door, locating the top and bottom of the mortise body and the top and bottom of the front. Then I placed a line at the top and the bottom of the mortise lock front. To determine the location for the mortise pocket, I drew the outer shape of the mortise lock against the side of the door with the lock’s latch positioned in the same height as the cylindrical lock latch edge bore. ![]() Important: If you are mortising a solid wood door, use a number of very shallow cuts to prevent damaging the door. ![]() Because the door’s core was not solid wood, I could make very deep cuts to create the mortise pocket. The door blank used for this installation article has a solid (particle) core within a wood frame. The L rose should be large enough to cover the cross bore in order to convert a cylindrical lockset door prep to accommodate the SARGENT mortise lock. As a possible alternative, SARGENT offers the L sectional trim which has a 3-1/2” diameter rose. To order this complete mortise lock, the part number is SARGENT 8243WTL. The WT escutcheon is a full length trim that extends above and below the mortise lock body. I mortised the pocket using the 1” diameter cutter and then used the 1-1/16” diameter cutter to mortise the opening for the front of the mortise lock body and the faceplate.įor this installation article, I removed a SARGENT 7 Series leverset from a door blank and installed a SARGENT 8200 Series mortise lock trim with the WT escutcheon and L lever. The wood cutters included in this kit are 7/8”, 1” and 1-1/16” diameter. The clamps provide the stops for the mortising tool by limiting the travel of the housing assembly.Ĭutters for this tool are designed for wood or aluminum. The height of the mortise pocket and the faceplate is determined by the positioning of the two sets of clamps. The INJIG-MORT is designed to cut a mortise pocket up to 12 inches tall by up to six inches deep. To modify the door’s lock preparation from a cylindrical to a mortise configuration, I used a Pro-Lok® INJIG-MORT self-centering Mortise Jig to cut the mortise pocket into the edge of the door. Escutcheon trim (one single plate) on the front and back can work however, the trim must be wide enough to cover the cylindrical lock’s 2-1/8” wide cross bore opening. It may be possible to use a sectional trim equipped mortise lock if the roses are larger than 2-1/8” in diameter. ![]() When in doubt, contact your locksmith distributor or the lock manufacturer.Īnother important consideration is, “Is the door painted or does it have a wood finish?” Most sectional (rose) mortise lock trim will not cover the cross bore opening if the lock is installed at the same latch centerline height. If the door is not fire rated, there is a good likelihood the conversion can be accomplished and still meet code(s). If the door is on a commercial building, is the door fire rated? If so, the door and the frame must be replaced to make this type of modification. The first question to ask is, “Where is the door? Is it part of a residence or a commercial building?” If the door is on a residence, there are far fewer Life Safety restrictions and local ordinances. However, several things must be taken into consideration. For security, the end user may like the ability to have a single lock that contains both a latch and a bolt that is operated using one key and one action.Ĭonverting from a cylindrical lock to a mortise lockset can be practical. One consideration is a mortise lock would create a more attractive entry having a flowing handle. Locksmiths are getting requests from homeowners and businesses to change their entry door cylindrical locks to mortise locks.
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