熔模铸件尺寸精度较高，一般可达CT4-6（砂型铸造为CT10~13，压铸为CT5~7）,当然由于熔模铸造的工艺过程复杂，影响铸件尺寸精度的因素较多，例如模料的收缩、熔模的变形、型壳在加热和冷却过程中的线量变化、合金的收缩率以及在凝固过程中铸件的变形等，所以普通熔模铸件的尺寸精度虽然较高，但其一致性仍需提高（采用中、高温蜡料的铸件尺寸一致性要提高很多）。
The dimensional accuracy of investment casting is high, generally up to ct4-6 (CT10 ~ 13 for sand casting and CT5 ~ 7 for die casting), Of course, due to the complex process of investment casting, there are many factors that affect the dimensional accuracy of castings, such as shrinkage of pattern material, deformation of investment mold, linear variation of shell during heating and cooling, shrinkage of alloy and deformation of casting during solidification, etc. Therefore, although the dimensional accuracy of general investment casting is relatively high, its consistency still needs to be improved (using medium and high temperature) The dimensional consistency of wax castings should be improved a lot.