Concrete Bordure Block mold 1/20

thingiverse

I build scale models of concrete border blocks. I use 10 shore rtv2 silicon and the results are very nice. I also record the concrete mix ratios. I also include a SketchUp file if you want to make changes. You can visit my profile for other building material molds. Cement 6* Marble dust 3* Grout (tile fill) 1* Water 4* Important: Use a mold release spray before casting rtv2. Apply vibration after casting to prevent air bubbles. Do not remove before 24 hours and apply water with spray frequently. Water is very important, do not allow it to dry for a few days. It can harden completely in one week.