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Put out an APB for those ArrowheadsFixing Pen Width for plotting
Some AutoCAD users may experience difficulties when plotting drawings that contain arrowheads. The most common problems are due to an improperly set 'PEN WIDTH' size in the 'AutoCAD PLOT' function. If the PEN WIDTH is not set correctly, a plotted drawing may contain arrowheads that are not filled, not touching extension lines, or missing entirely. This document outlines how to avoid these types of problems by correctly setting PEN WIDTH.
Setting Units for Plotting (MM/In)
If the AutoCAD drawing will be plotted using MM units then the PEN PARAMETER/PEN ASSIGNMENT/PEN WIDTH must be set in millimeters (.254mm is the default). If the drawing is going to be plotted using INCHES, the PEN PARAMETER/PEN ASSIGNMENT/PEN WIDTH must be set to INCHES (.010 is the default).
Plotter pen sizes are measured in millimeters. If you are plotting in inches, the pen size needs to be converted to inches before setting the PEN PARAMETER/PEN ASSIGNMENT/PEN WIDTH. For example, a 0.3mm pen is 0.012 inches. (mm/25.4 = in, or 0.3 / 25.4 = 0.012). Or, If you are working in inches but your pen tip measurements are in millimeters, you can select Millimeters in the Plot Configuration dialog box, make your pen assignments, and then switch back to inches.
Pen Alignment through "Adjust Area Fill"
When you plot 2D solids and wide polylines, AutoCAD uses the pen width value specified in the Pen Assignments dialog box. The pen normally aligns with the center of the object boundaries. To ensure greater accuracy, you can use the "Adjust Area Fill" option to move the pen inward by half a pen width.
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