Mix the silicone with 5 % harder, (100gr + 5gr harder) mix good and pour in a fine stream.
Tip : use our stainless steel silicone mixer with a cordless screwdriver !
Mix well but slow to avoid to much air bubbles. Curing : 8-24 hours
It's best to use the silicone at room temperature(more liquid and faster curing)

We suggest to use a good microgram weighing scale to measure the harder correctly.