Lightroom Printing

[arnoldl15238772]

when I am printing in Lighroom I select  a 10 x 8 cell size however the print comes out as a 10 and 1/8 and 8 and 1/4 how do i get to print the correct size. I am printing on a Epson XP15000

[cmgap]

Have you also selected  the size in the Page  Set Up at the bottom of  the left column?

[arnoldl15238772]

Yes I select the correct size 8 x10 in page set up

[cmgap]

Check that the guides are pulled all the way to the edge around the image.

[richardplondon]

Make sure that "borderless"mode is not set in the print driver options. The consequence of this mode is that a page layout (and the photos on it) are not kept true to their stated physical scale, but instead get enlarged slightly when it comes to the actual output.

This makes a little "wiggle room" allowing for some imprecision in the paper manufactured size/shape, also for any misalignment when it's fed through the printer, to not be made obvious (by leaving an unprinted sliver of paper along an edge). 

The entire page layout is enlarged under this mode, even when no photos would in fact be touching the page edge and in need of that extra allowance.

Some print drivers offer a different "true to size" borderless option which retains the exact scaling but also permits ink to spray right up the paper edge - in this case one will simply take the risk of inaccuracy.