Where can I inquire about a custom size 10x19 bamboo board? I like the size so it fit my desk, I only like to solve tsumego on the board these day, and the full size is too cumbersome for my desk.

Perhaps a folding board, a slotted board, or a 13x13 board ?

I like Ed’s idea of using smaller boards or half of a foldable board, and I like and use both these boards by Hebsacker Verlag in Germany:

Reversible 19x19/13x13 board with magnetic hinge

Reversible 13x13/9x9 board

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If you really want a custom sized/custom made board, perhaps user dramflamloc (Brendan) can help you.
See this topic http://lifein19x19.com/forum/viewtopic.php?t=10367
He has a shop on Etsy: https://www.etsy.com/shop/GobansAndGoBoards?ref=hdr_shop_menu

Yes thank you seem like I over complicated. Now where can I buy a foldable bamboo board?

i've seen foldable boards and i've seen bamboo boards, but never foldable bamboo boards.

I have a foldable bamboo board. I bought it at the glowing stone in London Ontario.

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