Going from wax to metal presents it’s own challenges. I took a class 14 years back sculpting a figure in wax as an art class. My project ended in disaster. But teachable moments.
My original was an aluminum pitcher handle for a bunch of doors for a house in Travis Heights. I made a cast in which to pour wax so that I could make multiple copies.and cast a bunch of these. I needed about 14 I think.
When I poured the wax into my plaster mold, the wax shrank in size considerably - maybe 7%. As it cooled it also distorted its geometry - far more than I realized at the time. The surface was also flawed and attempting to correct the geometry on 14 waxes proved daunting…no impossible. I created flat facets instead of smooth geometry attempting to fix the problems. The completed waxes bore only a rough resemblance to the original.
Casting was also a disaster. I separated the waxes and put them on a central sprew that I would later place in a large can and fill THAT with plaster. The instructor was to take my two cans and heat them up to remove the wax leaving a cavity for the metal to be poured in the follow process.
The next step involved heating the plaster in the cans to vaporize the remaining wax prior to pouring the molten bronze into the mold. The structure of the class meant that I was not present for this process, but because of the number of students there were two weekends devoted to that step. I needed to take my first cast and cut off the parts for post processing and return the bronze from the sprew to the instructor for the pour the next weekend.
Life happened and I didn’t get the sprew bronze back to him the day of the pour. He’d already poured my second mold however but with insufficient bronze to fill the mold and all THOSE casting were basically scrap. Unusable except to another artist.
There were lots of takeaways I could offer you to address what I think you are attempting to do. But you could communicate with me directly at my email email@example.com for additional guidance. I’m happy to share what I know but cannot say you will be successful with information I can impart. But we can have that conversation.