short Youtube video showing brass melting with a DIY propane furnace
https://www.youtube.com/watch?v=-A0VpTgKoRU
make your own sand
https://www.youtube.com/watch?v=LG1Prie_30w
basic lost foam ( simple plate casting)
https://www.youtube.com/watch?v=mL00B2N2iBY
wax mold making with alginate for Lost wax casting
https://www.youtube.com/watch?v=Rrc1O-a8Pt4