Crucibles

What’s the Difference Between Top and Bottom Pour Crucibles?

A top pour crucible is designed to pour molten metal from the top of the crucible. It requires the student to manually pour molten metal, which may cause inconsistencies in pouring and open up an opportunity for safety risks. The top pour crucible is typically used for smaller castings and is less expensive.

A bottom pour crucible is designed to pour molten metal from the bottom of the crucible through a spout. The student can control the flow of molten metal, ensuring consistent pouring and minimizing the risk of accidents. Bottom pour crucibles are typically used for larger castings and are more expensive.

Which Foundry Crucible is Right for Your Classroom?

Choosing between a top pour or bottom pour crucible will depend on the specific requirements of your classroom. Here are some factors to consider when making your decision:

Type of metal: Top pour crucibles are more suitable for pouring high-melting point metals, as they allow for better flow control and reduce turbulence. Bottom pour crucibles, on the other hand, are ideal for low-melting point metals, such as aluminum and zinc, as they provide a more controlled and consistent flow.

Type of casting: If you are casting large or complex shapes, a bottom pour crucible may be more effective as it can provide better filling and lower turbulence. For smaller or simpler shapes, a top pour crucible may suffice.

Cost: Bottom pour crucibles tend to be more expensive than top pour crucibles, so you should consider your budget when making a final decision.

Ultimately, the choice between a top pour or bottom pour crucible will depend on your specific application and requirements including the size of the casting, the desired level of control, and the budget. Consider the above factors when deciding which option best suits your needs.

Need Help Deciding on Foundry Supplies?

When searching for the best metal melting tools to use in your classroom, don’t feel overwhelmed or left in the dark. Consult with our sales team to compare the options and find the metal casting supplies that will work the best for your specific needs. Give us a call at 1-800-831-5904 or reach out online to learn more.