Book Page Holder
thingiverse
I saw someone post this on twitter https://yellowcartgo.us/products/book-page-holder and since I'm too poor to order anything I drew up a quick model in blender. Made two sizes. However the thumb hole for both is ~28mm I'll include the blender file for anyone who wants to fiddle with it. You might even get away with printing it with almost no infill if you set for like 4 walls and printer can bridge. Don't quote me on that though. Short Dimensions: 117.6 mm long 44.6 wide 20.7mm tall Long Dimensions: 161 mm long 45 mm wide 20.7 mm tall
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