I want to make a home made furnace because its a lot cheaper. Im planning on melting a few different metals the hottest melting point being brass (1700 F) so i need coal or something that can reach 2000 F. Is there something that can reach that high or would i need to buy a real furnace? I got the idea from king of random and Im planning on following his instructions on youtube. If you have any recommendations it would be amazing if you can leave a link please and thank you.