Status
Works as designed
Issue description
Add a new menu simular to the regular custom gui editor to create a custom Furnace GUI which mimic's all the features of a furnace such as the time it takes for ore to melt into a bar etc and the animated flame and arrow textures and bigger sized output slot like in the image below.
It would be redundant to make another mod element as GUI has most of the features to make a functional furnace. We will add more options in the future too. For now, check these tutorials to see how to make a furnace: