This 3D Printed battery cover is confirmed to fit the following models (but likely fit others in their respective product lines):

Printed in PLA plastic. The color has a different shade and sheen compared to the original Casio's ABS plastic. This cover does not include the foam strip seen on original battery covers, but it holds the batteries in position just fine. You can use 1/4" weatherstripping in place of foam. Cover has a snug fit. See the image with a comparison between the 3D printed model (left, foreground) and an original Casio SK battery cover (part number 69058341). This listing is for one 3D printed battery cover, not an original battery cover.

Note: Due to slight differences in print runs some covers will have a different texture or looser fit than others, however, every cover I sell is tested before shipping.