printedsolid - We've got a few posts up on our blog. Here's one: http://www.printedsolid.com/3d-printed-yoda-charm-cast-in-silicon-bronze/
Our casting guru Dave (the guy on the video) is pretty knowledgable and active on the alloy avenue forum (user name DavidF I believe). He's very good about explaining details and has helped a number of people locally build their own equipment.
There are a number of more in depth videos on you tube if you google lost PLA.

sophie4 - I am also interested in knowing more about the time lapsing of bronze casting. click https://www.dissertation-service.org/ to get best thesis writing service online. Being a big fond of bronze casting, I have personally collected a very giant amount of videos and images related to it.

milania - Non-ferrous metal casting is a multi-stage process that makes it possible to obtain high-quality products from alloys based on brass, bronze and copper. I advise you to find out more about this here https://machiningtoday.com/brass-vs-bronze-vs-copper/