|
|
| Home » Knowledge Base » Knowledge Base Article | Login | Become a Member | What's New | Site Map |
|
WOODWEB DISCLAIMS any and all RESPONSIBILITY and LIABILITY for the accuracy and application of the information below. Readers agree to evaluate the significance and limitations of the information provided, and accept full responsibility for the application of this information. Read More ... |
|
|
Would you like to add information to this article? Interested in writing or submitting an article? Have a question about this article? Custom Mouldings for Arched Window Tops Question
Forum Responses
From contributor F: A lot of windows out there are not of true or consistent radius, especially the vinyl ones. Some molding guys will take a large piece of paper and thumb tack it to the wall so that the paper covers the window. They then take what is known as a rubbing from the window itself. This is done by pressing the paper tight against the window outline and rubbing a lead pencil back and forth until you get the image of the part of the window that you need on the paper. You can use the rubbing as a template or as a guideline to set up a trammeled router with to cut your molding blank (CNC if you have one).
From contributor B: We cut either templates or mouldings for other millwork shops on a regular basis - usually an arch, which is a section of a circle and only needs to be defined by a measured radius. An ellipse or part of an ellipse tends to be more suited to a field template. We have seen the same model elliptical window, as produced by a large name manufacturer, was not consistent in shape and size from one window to the next. For applying a moulding that was to have a consistent reveal, this would have been a very large problem had these openings not been templated and reverse digitized. As the previous post said, what machine will you be cutting the moulding with? Nothing compares to a quality CNC router for producing accurate, repeatable and fast templates and mouldings. If you do not have a CNC machine of your own - simply job it out to a shop that does.
From contributor P: We usually measure the radius by rise/run (height/width) then add the reveal to find the arc. Then we use a trammel with a router to cut out the blank, then run it through our moulder or shaper. I would suggest using carbide knives though..
Have you reviewed the related Knowledge Base areas below?
|