I purchased a blank 1986 era East German NVA military ID book a few years ago, recently I tried to find another blank book but was unable to find one. My worst fear had become real. DDR militaria was starting to run dry. I would love to have more of these ID books, so I decided to begin making them. I am here to receive any and all info that anyone might have about these ID books, from the material of paper they used and they way they were printed or bound together. With my original ID book, I can get pretty far but would love any info that you fine Gents may offer.

I had one years ago and sold it ugh

Still some available.  Search ebay for "Wehrdienstausweiss".  

Well, hopefully OP found a blank one in the last three years but here's one for $10+$6:

https://www.ebay.com/itm/176724091601?_skw=Wehrdienstausweis&itmmeta=01JGSJQQ4AF0S75Y31VJM4PTD7&hash=item292593a2d1:g:vDsAAOSwJsFnUvxz&itmprp=enc%3AAQAJAAAA0HoV3kP08IDx%2BKZ9MfhVJKm2%2BT243OJPgpf4Pv8eX%2BCpDCPSbeAHTFwpY%2FpvRr69%2B9PQ07VPyMS9PDhPumzB%2Fm2Y1I5n5Ico9nKnLJODsbhByTQ0LiWJa3JkN0bmFxAcrucMXwsSKe6%2FXyNEF8YC8C6zwkYnChDuFKMDiAGlbESurmkOF7vDyVX%2FgtQneuwcn2VQcCELpSTvqadEePtfzC30WQhSFCUBWTQ4A7n6KuKM58VG0B4WHwB8wpR7ekjz0OWBfDPhYI5qnM14oitCte8%3D|tkp%3ABk9SR57y3rKGZQ