Dual-tray is definitely the best solution, but if you already have a single-tray laser and have more time than closings, here’s another method… if you’re looking at your docs in Adobe Acrobat… when you click Print, it will show you a small preview of the doc to the right of the Print window. Right above that it says the size of the page. Just click through the pages of the doc (using the little arrows beneath the preview image) paying attention to the size of each page and in a Notepad/Word text file (or similar) type down which pages are letter and which are legal sized. It sounds tedious, but takes me about 1 minute per 100 pages. You will end up typing something like this:
Then, in that same print configuration window it asks you which pages you want to print. Set it to “Custom range” and cut and paste that list you just typed as above. Set your paper size to letter and cut and paste that whole “letter” list as the range (commas, dashes and all). The dashes tell it to print everything in between (so from page 1 to 48) then the comma “skips” it to the next range and so on. You can set it to print two copies (one for the borrower), but make sure you tell it to collate them.
You then do the same thing with legal paper, and bam, all sizes and copies done with just two print jobs. Use the same little page range numbers above to guide you as to where the pages go so that you can keep them in order if you prefer.
Like I said, it sounds convoluted, but it’s really really simple to implement. If you’re only doing a signing here and there, this method can really work for a good while until you can buy the dual-tray with some actual profits.