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   Hello, if you have a professional version of Adobe you can "save as" a JPG, open it on Paint, select all ( Ctrl+A ), right clic to invert the colors and have a "grey print" with blue lines.Could it be easier to modify for you ?
Is the PDF drawing too complicated to be redrawn or do you want to save the beauty of the blue print ?
I know that redrawing from paper to real AutoCAD is painfull but you would get a good document.
When I do this job I place each views, dimensions, etc at the same place, with the same scales, etc and by doing this you will verify that your AutoCAD will be the most correct as possible.

Edited by philippe JOSEPH - 29.Sep.2022 at 08:35

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philippe JOSEPH Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 14.Mar.2011 Location: France Using: AutoCAD Mechanical 2017 Status: Offline Points: 1493	Topic: real white line Posted: 29.Sep.2022 at 08:29
	Hello, if you have a professional version of Adobe you can "save as" a JPG, open it on Paint, select all ( Ctrl+A ), right clic to invert the colors and have a "grey print" with blue lines. Could it be easier to modify for you ? Is the PDF drawing too complicated to be redrawn or do you want to save the beauty of the blue print ? I know that redrawing from paper to real AutoCAD is painfull but you would get a good document. When I do this job I place each views, dimensions, etc at the same place, with the same scales, etc and by doing this you will verify that your AutoCAD will be the most correct as possible. Edited by philippe JOSEPH - 29.Sep.2022 at 08:35

Kent Cooper Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 12.Mar.2013 Location: United States Using: AutoCAD2020, 2023 Status: Offline Points: 685	Posted: 28.Sep.2022 at 20:37
	It's not clear which message that is in response to. If you use color 255 in color-based Plotting, you also need to designate in your Plot Style Table (where you can have any screen color plot in any color you choose) that things of that color should plot in that color. Might you have it set to plot color 255 as black?

waynelem Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 14.Jul.2014 Location: United States Using: autocad 2012 full /2014lt Status: Offline Points: 73	Posted: 28.Sep.2022 at 19:07
	When you print it comes out black.
	wayne

Kent Cooper Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 12.Mar.2013 Location: United States Using: AutoCAD2020, 2023 Status: Offline Points: 685	Posted: 28.Sep.2022 at 15:47
	Color 255 is essentially white, or if not truly so, probably plenty white enough for the purpose. Edited by Kent Cooper - 28.Sep.2022 at 15:51

Vladimir Michl Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Moderator Group Arkance Systems CZ Joined: 26.Jul.2007 Location: Czech Republic Using: Autodesk software Status: Offline Points: 2098	Posted: 27.Sep.2022 at 08:24
	Either use plot styles or assign it a truecolor hue with maxed RGB values.
	Vladimir Michl (moderator) ARKANCE - https://arkance.world - Autodesk Platinum Partner

waynelem Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 14.Jul.2014 Location: United States Using: autocad 2012 full /2014lt Status: Offline Points: 73	Posted: 26.Sep.2022 at 21:11
	Need help. I have a PDF of an old real “blue print”, remember, blue back ground and white lines. I am going to import into AutoCad and I need to add some lines in white, and then make a PDF of the “new blue print”. Question is how do I make a white line? Thanks Wayne
	wayne

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