Step 6: Casting
now you need to mix up a little of the concrete mix just get a small amount and put it in the jug, we need to make this one very wet, I call it the beauty coat concrete users will call it a slurry mix the consistency of soup if you can try and keep as many stone out of it as possible, the purpose is to get concrete in to the details of the mould. you only need a little in the mould to cover the bottom, then agitate it to get it in to all the cracks of the mould.
now you need to add more concrete mix to what you have in the jug you need to make it a thicker mix your after a mix that's the consistency of cake mix, spoon it in to the mould and tamp it down to get it all in the mould this also helps to bring the fats from the concrete to the surface and the excess water to the top.
now we have to insert the plastic rods, you can use old pens but I would remove the ink bit from inside you don't want this in your soil.
ok now you need to leave them for a minimum of 24 hours, I would leave them a few days to make sure they cure all the way through.