What happens when the melted paraffin wax begins to solidify before casting the subject?

When melted paraffin wax begins to solidify before casting the subject, it can result in a poor-quality casting. The solidification process may not be uniform, leading to uneven distribution of the wax and potential air pockets within the mold. This can cause defects in the final casting, such as rough surfaces or incomplete filling of the mold. It is important to maintain the melted wax at the correct temperature and pour it into the mold promptly to ensure a successful casting.