Shiny rock melder

The Shattered Isles are giant floating chunks of minerals and gems. These stones are considered exotic and bizarre by most, but they are all so common for the ones that call them home. The elementally charged stones and minerals have become a normal part of their every day lives. There are those that mine the Islands themselves for minerals and then there are others that make fantastical inventions from them. You are neither of them. There are a small number of people that serve as a vital part between the two. The are only know by locals as the 'Melders'. A Melder's job is to separate the valuable stones from the rubble and attach them to what ever surface is needed. Could there be other uses for their talents?
 

Acid of the Isles

You know how to make the unique acid used by the Melders. It is an acid that can melt Iron and weaker stone with ease. But this acid is also very thick compared to other liquids and kept in a strong glass containers. As such it has very little use in fast paced situations.  

The Ever Glue

A sticky viscous liquid used by the Melders. It can be applied to allmost any surface and stays active for an hour after being applied. There is no painless way to escape Ever Glue, unless you know the secret.