Hollow core doors can be trimmed to any custom size, but it is essential to consider the strength of the outer frame at the top, bottom, and sides. To trim a hollow core door, use tools such as a hand plane, power plane, or belt sander to trim a bit off the top or bottom.
When cutting a hollow door in height, it is best to make a decision on whether the door would look best with the solid material. If you have just installed carpeting, your interior doors may rub and bind, so you need to trim off the bottoms. To shorten a hollow-core door, try replacing the bottom rail with expanding foam instead of wood.
To trim hollow core doors, use sheets or paper to protect the surface of the door and tape to secure the door’s surface. It is recommended to remove no more than 1 inch from the bottom of a hollow core door to ensure that the door maintains its shape.
To cut down a hollow-core door, score the faces of the door with a knife and cut just to the outside of that line to avoid cutting too much. Hollow core doors typically have about one inch of solid wood at the top and bottom, so you should be able to trim a bit off to make them close.
In summary, resizing hollow core doors, using tools like hand planes, power planes, and belt sanders, and making clean cuts to ensure the door maintains its shape and functionality.
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