sidelined, I mostly use pdf patterns these days. You need adobe acrobat, r click to open with adobe. Then you untick layers until that just leaves the size(s) you want, maybe 2 sizes if you want to grade. The pattern will then print just those sizes in A4.
AO downloads are also available when purchasing pdf and they can be printed by the likes of foldline or guthrie and ghanni, there are other online printers for patterns. The downloads typically contain files for A4, AO and instructions. I download each, pop them into a specific file on my desktop and then move that file into the file I have for that particular designer
A4 sheets are easy to do, I often use A4 when printing for a top or skirt. If I am buying from foldline anyway then I get pattern printing while at it, you just need to follow the instructions and browse to upload the particular file. I always use AO for dresses and coats and maybe for trousers
All my pdf patterns are nicely stored in files on my desktop and I have backed up twice, as it must be quite valuable