Core Mold Plunger Replacement Part
The Core Mold Plunger is an essential replacement part for the Corbin CM-4a core mold. Designed to fit perfectly and function seamlessly, this plunger ensures the smooth operation of your core mold, maintaining the precision and efficiency you expect.
Why You Might Need a Replacement:
- Sticking Due to Alloy Use: Using a tin/lead alloy (solder) can cause the plunger to stick to the cylinder walls as the mold temperature drops. This sticking issue can often lead to damage if not handled properly. Avoid striking or hammering the pistons; instead, gently heat the mold to release the plunger.
- Improper Cooling: Attempting to eject lead cores before they have adequately cooled can lead to forceful ejection attempts, damaging the pistons. Ensure the cores have cooled and shrunk sufficiently before ejection to prevent damage.
- Closing the Sprue Plate Prematurely: Closing the top plate while the plungers are still projecting can dent, gouge, or bend them. Allow the mold to cool before attempting to adjust and remove any damaged pistons carefully.
Proper Maintenance Tips:
- Avoid Force: Always avoid using force with the core mold. Proper heating and cooling are key to maintaining the integrity of the pistons.
- Use of Lubricants: Applying a high-temperature lubricant like Loc-Tite Anti-Seize or Permatex to the pistons, sprue cutter, mold block, and inside the cylinders can significantly reduce sticking issues. A small amount goes a long way, providing a protective film that lasts for hundreds of casts.
Safety First:
- Always wear eye protection and gloves to prevent injuries and burns.
- Handle hot molds and lead with care to avoid accidents.
The Core Mold Plunger ensures your CM-4a core mold operates smoothly and efficiently. Proper use and maintenance of this replacement part will prolong the life of your mold and enhance the quality of your casts.
| Material Material Material Material Material Material Material Material Material Material Material Material | Steel Steel Steel Steel Steel Steel Steel Steel Steel Steel Steel Steel |
| Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter Diameter | 0.125" 0.170" 0.185" 0.210" 0.218" 0.247" 0.275" 0.312" 0.340" 0.365" 0.390" 0.430" |
The Core Mold Plunger Replacement Part is a component used in the CM-4a core mold. It serves as a replacement for any damaged plunger or piston in the mold, ensuring the smooth and efficient operation of the core mold.
Common reasons for needing a replacement plunger include damage caused by using tin/lead alloy, improper cooling of lead cores, or closing the sprue plate while the plungers are still projecting above the mold.
High-temperature lubricants like Loc-Tite Anti-Seize or Permatex are recommended. These silver-colored lubricants can be applied to the pistons, sprue cutter, mold block, and inside the cylinders to reduce sticking issues. A small amount is sufficient and can last for several hundred casts.
No, using force to remove a stuck plunger can cause damage. Instead, heat the mold gently to release the plunger without causing harm to the components.
If the plunger is damaged, replace it with a new Core Mold Plunger Replacement Part. Ensure proper handling and maintenance to prevent future damage.