Question: destiny 2 how to get black furnace?
Answer: Speak to Ada-1. To start head on over to see Ada-1 in the Annex at the Tower and pick up the Pulse Rifle Frame. ... 
Basic Pulse Rifle Frame. First of all, you want to pick up a couple of items. ... 
Pulse Rifle Alpha Frame. ... 
Pulse Rifle Beta Frame. ... 
Pulse Rifle Calibrated Frame. ... 
Go see Ada-1. ... 
Forge the weapon. ... 
Blast Furnace.