My daughter is still working on her marimba. The resonators (PVC pipe) will be attached to metal strips, so she had to drill holes in the metal. The sawdust was very interesting and I made several photos....
Thank you for commenting @linnypinny - hardly any processing here :) - just fiddled a little with "curves", but not much. The previous photo on black needed more to get the back the black - it was grey.