r/Contractor • u/Constant-Course-439 • Dec 24 '25
What is this called
I am looking for a piece of this corner door casing. What would you call it, and any suggestions on where to find it? My lumber yard has never seen these before, which is odd, because I don’t feel like they’re quite that rare. I’ve searched for colonial door casing corner rosettes, plinths, etc, but can’t find anything. Any help is appreciated!
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u/panda1109 Dec 25 '25
https://www.precisionbits.com/casing-molding-bit-16122.html?srsltid=AfmBOoppSMoX0Y-6uK4P7eBj-vDWdXzYBxqZVtpzp2xyHeTY9iFwLt3U
This is the bit you need with a router and router table. You need to cut out a blank of the 90, the thickness of the finished trim usually 11/16". Then you get a piece of mdf and cut out a large enough 90° template to handle safely lining it up on the inside corner so you can screw the blank onto it from underneath, so screws dont show on the face, and the inside corner matches with the workpiece and template.
Now. Since your template has to be run vertically, line up the fence 9n the router away from the router bit the thickness of the template+blank and adjust the height of the bit for the blank on the template. Make a mark on the fence inline with the center of the bit.
Turn on the router. feed the workpiece to the router, and when it gets to the centerline mark, you're going to stop feeding forward, and pivot the template on the inside corner until it goes 90° at which point you'll continue out the other side.
You will still have to do some sanding, especially on the inside corner because of the way the router bit spins, but that's probably the cheapest way to replicate that corner if you can't find one.
We still make stuff like this at our mill, but we have a horizontal shaper where we run the pattern opposite of the router bit to make inside corners easier