Hi Hs, thanks for your reply, I figured it our with another method but yours look cleaner 🙂.
No worries, you can share it with everyone !
I'm thinking about an indestructible block, adapted from your mod, for a public mine setup so people could harvest those special stone, steel and other blocks without having to dig holes all over the map 😉 and they would just reset (when harvested down to 0) like the invulnerable blocks. Any suggestion would be welcome.
Cheers mate !
Theo