Hi,
I'm fairly new to inkscape and graphic editing in general so bear with me. I restore pinball machines as a hobby and I'm trying to recreate some graphics. I have a f-14 pinball machine playfield that's been scanned in 8 pieces because of its size. I want import 1 scan, trace the artwork with the bezier tool then print onto decal paper. I then apply the decal and clear coat to repair the playfield. I've traced all my artwork but when I print the artwork it comes out small. My scans have a ruler laid across them so I can easily resize the scan but this does not help. I resize to make 1inch on the scanned ruler match 1 inch with my measure tool but it still comes out small. Also my prints have a border around them even though I have "print borderless" marked on my printer preferences. Not sure why this is happening either. When I import my scans into gimp they are 8.3"x11.2". Is this normal for a 8.5x11 scan bed to scan slightly smaller? How can I get inkscape to import and export my scans and artwork the correct size? As of now inkscape imports my scans at 21x28ish.
Help needed,
Tony

Welcome aboard!

Once you trace your image you don't have to rely on exporting, you can preserve the vector content for printing.
By printing from pdf, there is an option to print at the actual size.

You can scale your imported raster images inside inkscape by typing in the top boxes for height/width.
That's preserving the original content, unlike scaling with a raster editor like gimp.
(There are quite a few related topics on raster image resolutions -inkscape (from 0.92)- is using 96 dpi (90 previously) and gimp works probably at 72 dpi.)

Printers usually need an edge to transfer the paper in the printing process. For edge to edge prints, print over the final edges, on a larger paper, and trim off the unnecessary part.