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Laying out radius12/30
Hey everyone , I need to replicate some arch top doors . They are not a true radius they are more of an ellipse . I know how to replicate radius' by hand but does any one have a trick or remedy to mimic this in cad ? I'm using alphacam and biesse works .
You need a template tracing of the existing shape. Then you can digitize that into AutoCAD.
No digitizing board? Not a problem. Put a laser pointer on your CNC Z-axis and the template on the table. Move the Z-axis around the table so that you can select points every 3" to 4" along the template line. Record these points and then type them into AutoCAD while creating a SPLINE.
Works perfectly although a bit time consuming. Years ago when we were doing it this way a lot we would speak the points into a tape recorder for playback when entering the data into AutoCAD. Then we got our 44" x 60" digitizing board and got rid of the tape recorder.
best way is to just measure up some reference points and replicate it in cad. don't know why you would use a cnc with a laser when a tape measure and square will do. the closer your points the more accurate your curve will be. the smaller the radius the closer the points.