Some nice shots of our Ornithoctoninae females with their cocoons in their so-called Haplotanks

[Mike Withrow]

Mine have done the same thing and I started using a black cardboard backing attached by Velcro and they eventually dug down within a month. I do it with all my Asian fossorial spiders now. See them a lot more of them as well. I started doing this right at a year ago and am pleased with how it helps. Totally different enclosure and stuff I know just something I experimented with that for me actually worked.

So glad holiday weekend because I have thought about this all night. I would definitely like to try a couple of these. One thought I've had and this is purely from me coming up with a way to introduce a male and not end up with it hugging my face. So I've always tried to if possible drop them on the far end so he has some scoot room and can pick her up.
I'd really like to hear from anyone that's paired with enclosures like this.