Can't Define Document to Staple every 3 pages in a 1000 page document

Question

Hello,
I am printing a LARGE multipage document. I created a 1000+ record data merge in excel for a packet. Each packet is supposed to be 3 pages and duplexed w/ a top left staple. The issue is the document isn't setting up the pages as [1,2] [3,4] [5,6], it is set up as 1,2,3,4,5,6,7,8,9,10... so it doesnt know when to staple. It will print 50 then staple those all together. I need to know how define the page range. Been working on this for 3 days and finally came to the forums. Thank you!

Answer 1

The Stitch is part of the printer features, not InDesign. You enabled stitching by hitting the Setup tab on the print dialog and enabled stitching.
For this to work you are going to need sets of three (or 6 pages, from your description)
This answer is not pretty, but it should work...
Print your merge template once with settings, these should carry over to the new, merged documents
As part of the Create Merged Document process, there is an option on the option tab to limit Records Per Document. If you set this to 1, ID would create about individual new documents that you would Print > Stitch.You would have to print 1000 documents.
I do not recommend this, but it would work.
Limit your records during the merge, (first tab, Records > Range) to perhaps, create 100 documents, elsewise I expect ID would crash, or take 30 minutes to complete. Depending on the horsepower of your machine, this could double or half.
This sounds like something to inquire about in the scripting forum; ie: create one 6 page merged, print using defined setting, close document, repeat.
The better way...print the whole thing, flat, take it to a printer with a decent collater and have them collate & Stitch.