[FAQ] • [doc]
Robust glass detail

Robust glass is a thick type of glass used for creating potion flasks. It is created by melting red sandstone in a robust glass machine, which can be found southwest of the mud bath in Oo'glog or by the pottery oven in the Ithell district of Prifddinas. The machine requires completion of As a First Resort to use.

Melting red sandstone has no skill requirements, but creating potion flasks from robust glass requires level 89 Crafting. This requirement can be boosted, but it cannot be assisted. Strange and golden crafting rocks can be obtained from creating potion flasks.

Making robust glass

A player using the machine to make robust glass

Audio options icon
The sound that plays when operating the Robust glass machine.


[FAQ] • [doc]


  • An update in May 2017 changed the colour from purple to yellow.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.