Assembling the frame of a new door and learning the process for marking the hinges is a good way to spend one of those interminable Sundays between the Super Bowl commercials and the first steroid rumor of the season. Customized framing and hanging is best left to those with a knack for carpentry or those with enough wood on hand to get through a few mistakes here and there. It’s not a job for the squeamish, but then again, there are other home improvement projects that it would be better to avoid.
The frame of the new door needs to be assembled. The simplest way to do this is with fairly nice grade of real lumber or a precut jamb stock that is available in widths of 4.5 inches and 5.25 inches. The latter is for framing between plaster walls.
Fitting the frame is the next step after it has been properly assembled. Open up the wall and take a shot at rough-framing the opening. You should set the jamb frame into the opening and the level it out with a spirit level. Provided the head jamb is not level, you should shorten the longer side. When your leveling reveals a head jamb that is level, but you notice the frame is fitting rather tightly along the top, you can cut the lugs to make it fit. Remove the jambs from the opening after the door has been fully fitted.
Get yourself a butt marker that aligns perfectly with the size of the hinges to ensure accuracy in installing butt hinges. The best method for marking hinges involves a mark on the door, alignment of the hinge jamb alongside it and then transmitting the marks over to the jamb. Use a pencil so that you can erase mistakes. Mark the door edge 5 inches from the top. Now you need measure up 10 inches from the bottom of the door and mark that edge. Position the hinge jamb alongside the door with the bottom of the dado so that the head jam fits with just 1/8 of inch clearance above the top edge of your door.
The next steps involved cutting mortises with a router and installation. That is beyond the scope of this article which just wants to let you know how to assemble the frame and mark those hinges. But who knows, if you conduct a search for Associated Content over there to the right for “How to Hang a Door,” you might find an article from another talented AC how-to writer or you may even find an companion article by me on how to hang a door.