So I'm trying to figure out how much paste I need to order for an upcoming run and have just run up against a lot of sciencey sounding math and formulas that require info the datasheet doesn't provide. I made some assumptions, like solder paste having a Specific Gravity of ~4.14g/cm3. I then calculated the area of solder paste on my board, ~353mm2. And the volume for a 0.12mm thick screen, giving me 42.5cm/3. area / SG and this calls for ~85 grams of solder paste. Does this sound remotely reasonable?
In addition to this, how much extra should I account for? It comes in 50g or 250g and if two 50g will do I will be happy (and have ~$40 more on hand)
For reference here is the board, the highlighted part is an 0603 resistor with a 1.05x0.95 pad.