Thats about it Nige but use a cubie to mix it in, the portion of the cement that reacts with the water in the methoxide converts to calcium hydroxide and sets solid so you have to dispose of it and can't use the cubie again.
After you shake it up leave it for 3 days or so to settle. Be accurate with your measurements as you are going to measure the methoxide out only by volume.
Mix enough for your reaction so you don't have to disturb the fines at the bottom of your cubie. If you get the cloudy part of the methoxide in the mix you will produce calcium soaps in the bio which are difficult to remove.
There is no waste, pour the dregs of each cubie into another one and let it re-settle. Throw away the cubie with the solids in it.
When I've used this method with potassium my 1st water wash is like the last one if I had used a normal method ie virtually no soap had formed.
It also gives you virtually 100% yield (remember 100% yield from our process is 104 litres of bio from 100 litres of oil)
Adding the cement can be messy but if you can do that bit as efficiently as possible the rest is easy.
