Percussion Blocks, all of them, C to B

12 percussion blocks covering one octave.

I printed in Prusa PLA Galaxy Silver and with 5 perimeters and 100% infill, one block at a time. 

Tuning:  If you want to fine tune the blocks, let them first rest for a week after printing to allow the material to settle. 

• To lower the frequency: Deepen the slot a little at a time. A hacksaw blade or the edge of a file is perfect for the job. 
• To rise the frequency: Scrape off material near the end of the tongues, just a little at a time. I used a scissors, there are probably better tools for it, sandpaper should work.