Place your Chemex on your scale and pop the filter in the opening, presoak the filter, and dump the water after the rinse.
*make sure that the 3-layered side of the filter is on the side with the spout*
Add your ground coffee to the filter. Zero out your scale
Start the timer. You will need to "bloom" your coffee. For this, slowly pour until your scale hits 150g. Even saturation is key in this step to allow the coffee to de-gas and get all that you can from your coffee.
After letting your coffee bloom for about 45 seconds, pour your water from the center of the filter in an outwards motion up to 450g of water.
When your timer hits the 1:45 mark, pour your water again to a total of 700 grams. Give your brew a delicate stir around the sides of the filter with the back of a spoon to settle loose grinds into the bed.
At this point, let the water draw out until your timer reaches about 4 minutes (add another 30 seconds if your coffee is still dripping.)
Enjoy a damn fine cup of coffee!