CasioTone MT-28 Replacement Black Keys

Here's a set of replacement black keys for the Casiotone MT-28 keyboard by Casio. When I was in the middle of repairing my Casiotone the black keys snapped off their bridge necessitating replacement keys.

These were built with srepmub's key library for OpenScad. I can upload a modified version of that if anyone needs it. It'd be more work to integrate the changes into the original for the library to work for both the MT-28 and the keyboard it was originally intended for than I've got time for right now.

I've verified that each set of keys fits where it should and that the screw holes line up. These replace the current continuous key bar with 5 individual sets to make it easier to print. They've got a bit of buffer space for the cross bar in-between each set of keys.

UPDATE 10/30/2024: I've increased the strike area and elongated it. In practice these seem to sit a bit higher than the originals and needed to be closer to the plunger so the keys wouldn't have to travel as far. Which should also help them last with PETG prints.