THE #1 MISTAKE WHEN USING BONDO ON SILICONE MOLDS: HOW TO PREVENT YOUR DENTURE FROM BREAKING OR STUCK TOGETHER
Guarantees perfect prostheses every time: The secret of professional demolding.
Bondo (Prosthetic Transfer Silicone) is an essential material for creating quick and realistic wounds with your Flat Moulds. It is valued for its speed and the fine integration it allows, even in small moulds like our " Our Father " mould.
However, the most frustrating and costly mistake is when the prosthesis breaks, tears, or sticks to the mold while trying to remove it. This problem isn't with the quality of your silicone, but with a crucial step in the preparation process.
This article reveals the main mistake many makeup artists make and the professional solution to guarantee perfect prosthetics, every time.
DIAGNOSISI. IDENTIFY ERROR #1: PROTECTIVE BARRIER FAILURE
The main error is not the Bondo mixture, but the lack of molecular separation between the two types of silicone.
PROBLEM Molecular Affinity
The silicone in Bondo is chemically similar to the silicone in your mold. If the two come into direct contact, they adhere at a molecular level (like trying to remove a magnet), and the force required to separate them is greater than the strength of the thin prosthesis, causing cracks at the edges and in the details.

II. THE PROFESSIONAL SOLUTION: OVERFLOW AGENTS AND SEALANTS
To avoid this disaster, you must apply an invisible protective barrier over the surface of the mold before applying Bondo.
Product: Use a professional-grade silicone release agent , available in spray or liquid form.
Application: Spray or apply with a soft brush an extremely thin and even layer over the entire surface of the mold.
The Benefit: This is the most reliable method and will not affect the quality of your prosthetics or the Bondo's ability to adhere to the actor's skin later. It guarantees that the fineness of detailed molds remains intact.
Product: Vaseline, but always diluted in isopropyl alcohol (Ratio: 1 part of Vaseline to 5-10 parts of alcohol).
Application: Apply the diluted mixture with a fine brush, allowing the alcohol to evaporate and leaving only an almost imperceptible veil of petroleum jelly.
The Benefit: If you use too much petroleum jelly, your prosthetic won't adhere properly. This method is only for emergencies.

III. THE CRITICAL APPLICATION AND DEMOLDING PROCESS
Uniform Pressure
When applying Bondo over the release agent, make sure to press evenly with a spatula. This ensures that the Bondo fills all the details of the mold (cut, texture, etc.) and expels air bubbles, preventing holes.
Edge Sealing
After the Bondo has cured and before removing the mold, apply a little isopropyl alcohol around the edges. This acts as a final release agent at the seam and helps prevent initial tearing.
Radical Patience
Never pull. Always peel it off from the corner very carefully and slowly, rolling the prosthesis gently over the skin's surface.
IV. Protect your EQUIPMENT
The quality of your molds from lolitamakeupshop.es guarantees exquisite details and durability, but the correct use of the accessories is what ensures professional results.
By investing in a good Release Agent and Isopropyl Alcohol cleaner, you not only avoid wasting Bondo, but you also extend the life and accuracy of your molds.
Ensure the perfection of your next prosthetic! Avoid the number one mistake and guarantee fine edges every time. Visit our Flat Moulds FX section and don't forget to add Release Agents to your Makeup kit for a flawless result.
