AutoCAD plot scale experiment
AutoCAD plot scale experiment
(OP)
Hi folks,
I am back with the question.i printed a drawing drawn in Autocad and plotted to 1:1 scale into a pdf.when i checked it physically,it was not accurate and 5mm short of what it is supposed to be.
The line was drawn for 10 units in decimal and plotted to 1:1 scale (1unit = 1mm)
Can you clarify the reason please?
I am back with the question.i printed a drawing drawn in Autocad and plotted to 1:1 scale into a pdf.when i checked it physically,it was not accurate and 5mm short of what it is supposed to be.
The line was drawn for 10 units in decimal and plotted to 1:1 scale (1unit = 1mm)
Can you clarify the reason please?
RE: AutoCAD plot scale experiment
RE: AutoCAD plot scale experiment
Dik
RE: AutoCAD plot scale experiment
RE: AutoCAD plot scale experiment
Thsnks a lot for your insights.it is linear in both the directions as i have drawn a rectangle.it happens in both the length and width.
Should i check the printer settings or Plot settings in Autocad?
RE: AutoCAD plot scale experiment
RE: AutoCAD plot scale experiment
But that doesn't sound like what you got. You saw a 50% or 2:1 shift in scale from the print? Did you print to an A4 pdf file, and print the A4 file on A4 paper, with no scaling in the printer software? Sounds more like you printed an A2 document on A4 paper (or something like that, maybe switching landscape/portrait orientation too), and the printer scaled accordingly.
RE: AutoCAD plot scale experiment
Thanks for your interest.
I have drawn a rectangle of size 20 x 10.i have plotted it in AutoCAD pdf documentation print set up with a plot scale of 1:1 (1 unit = 1mm ).i have taken the pdf to a printer.
Please do let me know if you need any other details.
RE: AutoCAD plot scale experiment
And what does the rectangle measure on the paper? 15 mm x 8 mm? Or 10x5 mm?
Why not directly plot to the printer at 1:1?
RE: AutoCAD plot scale experiment
It measures 19.5 cm and 9.5cm which is supposed to be 20 cm and 10cm.
I dont have a printer connected and so made it a pdf and got it printed.
RE: AutoCAD plot scale experiment
In Adobe Acrobat, the default "Size Option" is "Fit" - this will scale the document.
In my version of Acrobat, the next option is "Actual Size" - this produces accurate scaling every time on our devices.
I suspect you need to address this with whoever printed the PDF rather than Autocad. However, one CAN perform measurements in a PDF. Can you post an example PDF?
RE: AutoCAD plot scale experiment
Thanks a lot. Will check it out and post it.
RE: AutoCAD plot scale experiment
Sudhakarn,
Getting to print 1:1 scale as accurately as, say, 1.000 : 1.000 can be difficult because the X error rarely matches the Y error. If I had to do this to make it as accurate as possible I would first prepare in CAD a drawing with a series of squares on the same sheet and fill the whole sheet with them. No point measuring 20mm when the paper is 200 mm wide; find out how inaccurate the WHOLE sheet is. There's no reason to believe the printer head feed has a constant speed; it could vary as it traverses the page. Or the feed rate could be variable... this is a deep rabbit hole.
Make sure your ruler is accurate. I am not kidding. There are some terrible rulers out there.
Then determine an appropriate scale to correct for X and if necessary a different scale for Y.
Since you are printing from AutoCAD to PDF and then to paper, you have 2x as many sources of error to deal with.
STF
RE: AutoCAD plot scale experiment
Thanks a ton for your insights.I do not think there is any issue with the ruler.The issue should be with the pdf maker or the printer.
May be next time i should try plotting directly from AutoCAD to plotter.
What do you say folks?
RE: AutoCAD plot scale experiment
RE: AutoCAD plot scale experiment
Make sure that your printer/plotter "shrink to fit available paper" setting is turned off.
B.E.
You are judged not by what you know, but by what you can do.
RE: AutoCAD plot scale experiment