Help! Looking for 8 K8200 frames!

Hi, I’m working on a big music project. Creating eight not yet existing string instruments, driven by stepper motors. On the pictures below i show you the first results. I’m looking for eight frames from Velleman K8200 (or comparible).

Please let me know if you have one or more frames.

Thanks,
Rob van den Broek
Zeewolde, Holland

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You can get the frame components here:

Alfer coaxis® column profile
https://www.alfer-shop.at/