LsFarm wrote:I can't remember from the text, did you allow for the shrinkage of the iron when it cools?? I think it's about 8%.. your iron foundry can tell you for sure.
Your pattern needs to be slightly larger than the final product to be cast from it.
Typically 1/8" per foot for cast iron.
Wanna Bee wrote:It has been mentioned and I have done alot of reading in regards to shrinkage.
I'm more worried about thermal expansion at this point. A tight fitting FP in the stove might expand faster than the stove around it. You know what happens next.
Magnesium 4.0 or 4.2
Zinc 3.7 or 6.5
Low carbon steel 2.5–3.0
High carbon steel 4.0
White cast iron 4.0–5.5
Gray cast iron −2.5–1.6
Ductile cast iron −4.5–2.7
What are you listing above? I don't understand what that list is about....