Last week I cast one of the door handles I 3D printed a few weeks ago. I decided to use bronze as the melting temperature is less than brass and it is less toxic to cast. I may still cast them in brass in the future.
At first I tried melting the bronze using two torches. I wasn’t able to get a high enough temperature to make the metal liquid enough. I then moved on to using the electric crucible which melted the metal with ease. The first pour I made a mold of the door handle and a smaller version that I may use as jewellery.
After taking apart the larger mold I found that the pour hadn’t worked. I think this was either down to the fact I pored with a hesitation or maybe the mold was too big. It was still in tact enough to try again. The second pour went well. I sat the mold at a slight angle for the pour and also added air holes in to the mold.
I have started to clean up the handle. I have cut off the sprue and started to file some areas. I might leave some triangles textured and some polished. I plan to add a threaded post so I can fit it to the cupboards.