Concrete Brick mold 1/20

thingiverse

I create molds for concrete bricks on a 1/20 scale, offering various models for clay or concrete. I use 10 shore RTV2 silicone and the results are very nice. I also record the concrete mix ratios. If you'd like to make changes, I can include the SketchUp file. You can visit my profile for other building material molds. Cement: 6* Marble dust: 3* Grout (tile fill): 1* Water: 4* Important note: Use a mold release spray before casting RTV2 silicone. Apply vibration after casting to prevent air bubbles from forming. Do not remove the mold before 24 hours have passed and apply water frequently with a spray. Water is crucial; do not allow it to dry for a few days. It can take up to one week for complete hardening.