Put the summary of the bug you're having here
The furnis wont work
What I expected to happen was...: the furnis to turn my ore into bars and cook my food
Describe what you thought should happen here the furnis should cook my food and turn my ore into bars

What actually happened was...: it didnt
Describe what happened here i placed my ore in the furnis and it wouldent let me put any wood to fuel it in and wouldent let me get my ore back same with my food

Steps to Reproduce:
1. Put food/ ore/ sand in furnis
2. Try to put wood/coal/stick/boards into furnis
3. Try to get item out