I use Canson card, which is fairly heavy (300 gsm I think) and I've always believed it was acid free, but I've since read an article saying that black card and paper can never be really acid free, so I'm no longer sure.
For the last few days I've been working on book boxes and it has been a bit of a challenge to get the pattern for these particular boxes just right, as I do everything by making and adjusting. This box is for my first BAO edition of books, and as it is an unusual shape, it's taken me a while to design the box and pattern to fit. Once done though, it was a breeze to make them up.
They're all done - 15 of them and the books are inside too! I've been working consistently on this project even though I usually don't do too much at this time of the year when it's so hot, and I wanted to finish it early before moving on to something else. I have been surprised how much I enjoyed making the edition and enjoyed working with the streamlined methods of production.
I will add a post about the making of the books at a later date, after they've been distributed and received by the members of my BAO group five.