Okay, a gig isn't the way to go. Removable Tape is the best option, 3M makes a good one. I have printed pieces 2" x 2" on a flatbed with 2 mm of head space. This works. Also when you start the run, do a template of the outer shape, and keep the art board to the same dimensions. This keeps it exact. Then print it on the bed. Once you have your step and repeat set up, take the art file (the exact same dimensions) use it with the same step and repeat and you have yourself a layout to place your pieces on. Then apply the tape to the areas where you can safely attach the pieces, whatever they may be. Then throw your vacuums on, and if you have a segmented vacuum chamber, cut the ones that are not being used off. Lay down your material. You may notice on some brands of flatbeds the vacuum isn't actually sucking through all the holes on the bed, for a tiny 2"x2" piece this makes a huge difference, so you be the judge of what works for your piece. Once you have it down, check your head height, and your ready to run.
Then you can remove these pieces and re-use the tape, depending on how many times you need it for, don't use it for an extended run of more than 5-6 beds, the tape just looses its gip and you need to re-apply.
Hope this helps.
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