Sorry to bring this dead/old thread up from the grave, but I've promised someone on here quite some time ago that I'd take pictures of removing the foam inside the Xiaomi Piston 2.1 while retaining the metal grill after the mod. So I will post pictures of how I modded the 2 that I have. The mod took me less than 5 minutes from start to finish.
The tools that I used are common items for watch modding, and if you do any soldering work then I'm sure you have these types of pointed tweezers. As for the glue that I used it's specific for watch modding. However, you can use any kind - even super glue if you want.
Tools:
Step 1: With the pointed tip push straight down slowly, until puncture it.
Step 2: Using the tweezer that punctured through the grill - lift upwards gently.
Step 3: The grill will be lifted off at one end, now go around with the tweezer gently lifting the grill off the housing.
Step 4: Remove the grill completely, and use the tweezer to fish out the foam.
Step 5: Clean and use the tweezer to bend back the part of the grill where you punctured through. I didn't show the process, but it's pretty easy.
Step 6: After cleaning the residual glue on the housing and grill, place the 'reformed' grill back on.
Step 7: Apply glue very sparingly, only use a 'smidge' at the edges.
Last step: Clean up the excess glue with some of acetone/nail polish remover. (Not necessary if you weren't rushing it like me, excuse the sloppy alignment of the grill - I've fixed it after this photo was taken and was too lazy to retake another lol)
This mod is super easy and can greatly enhance the already 'amazing sounding' Xiaomi Piston 2.1's
- Cheers and happy modding!