Antique Frame Restoration – Using Silicone Molds and Casting Resin
The charm of old decorative frames lies in their intricate details. Over time, parts may chip or disappear completely, but fortunately, these can be restored to near-original condition. This guide shows you how to recreate a missing part yourself using hand-molded silicone putty and casting resin - easy, yet meticulous work.
Supplies
- Hand-mixed silicone putty (long working time, approx. 30 minutes)
- Two-component casting resin (e.g., Smooth-Cast™ 325 or equivalent)
- Metallic powder effect (optional)
- Mixing tools and small containers
- Small syringe or dispensing tool
- Clear spray lacquer
- Suitable adhesive
Step 1: Making the Mold from an Undamaged Decorative Section
Start the repair by selecting an intact part of the frame that has a detail matching the damaged area. Take out the hand-mixed silicone putty and knead its two components together by hand until the color is completely uniform. Press the soft putty carefully onto the chosen detail. Patience is key here - the silicone needs to cure properly, usually about five hours. After curing, carefully remove the mold. The finished mold captures every detail of the original part perfectly.
Step 2: Preparing the Casting Resin
Once the mold is ready, it’s time to proceed with casting. Measure the two components of the resin according to the manufacturer's instructions and mix thoroughly. If you want, for example, an antique brass or bronze tone, add metallic powder to the mixture. The result is a beautiful and realistic effect that suits the style of the old frame.
Step 3: Casting and Reproducing Details
The resin mixture is poured into the mold. Once the resin has fully cured, the new casting is carefully removed. This produces a perfect replica of the original ornament.
Step 4: Finishing and Attachment
The casting itself is already beautiful, but the finishing touches really bring it to life. The surface can be tinted further to better match the original. Finally, a light coat of clear lacquer is sprayed on to protect the surface. The ornament is then carefully glued into its final position.
Final Result
When all steps are carefully followed, the new decorative part blends almost invisibly into the frame. The old frame regains what it lost - and a little more: an unobtrusive, durable and skillfully made restoration.