How to Create a Custom AutoCAD Paper Size from an Existing Size
For supported non-system plotters, the Custom Paper Size wizard can use an existing standard paper size as the starting point, then let you change media bounds and printable margins.
Browse CADPlotting articles about ISO, ANSI and ARCH sheet sizes, printable area, orientation, plot margins and roll media. These focused references help match CAD layouts and PDF output to the real dimensions and limitations of the selected paper and device.
For supported non-system plotters, the Custom Paper Size wizard can use an existing standard paper size as the starting point, then let you change media bounds and printable margins.
ANSI B is 11 × 17 in (279 × 432 mm). In AutoCAD, select the real printer or PDF device first, then choose ANSI B from that device’s Paper Size list and make sure the Layout title block matches the physical sheet.
Edit a custom paper size when its dimensions, printable margins, name or source are wrong. Make the change in the same device/PC3 that owns the media definition, then retest the actual sheet.
ANSI C is 17 × 22 in (432 × 559 mm). In AutoCAD, select the real printer or PDF device first, then choose ANSI C from that device’s Paper Size list and make sure the Layout title block matches the physical sheet.
Large-format plotters often use fixed roll widths with variable sheet lengths. Select the real plotter/PC3, create or choose a supported roll-fed media definition, and verify cutter/margin behavior with a test plot.
ANSI D is 22 × 34 in (559 × 864 mm). In AutoCAD, select the real printer or PDF device first, then choose ANSI D from that device’s Paper Size list and make sure the Layout title block matches the physical sheet.
Paper size is the full physical sheet; printable area is the smaller region the selected device can actually mark. AutoCAD shows the effective printable boundary in the Layout, and it changes with the printer/PC3 and paper size.
ANSI E is 34 × 44 in (864 × 1118 mm). In AutoCAD, select the real printer or PDF device first, then choose ANSI E from that device’s Paper Size list and make sure the Layout title block matches the physical sheet.
A cut-off border usually means the title block extends beyond the selected device’s printable area, the wrong paper size is selected, or downstream PDF/printer scaling is changing the sheet.