here's a few more tips for you lot, I will either use a cork bung, tube, cork bung , bottle set up to remove sap or I will use a hole, pipe, milk bottle, so starting from the easyiest way lets say we have a 1 gallon demi john, which is what we would ferment wine into so i would use a lengh of clear tube of 1/2" or 3/8" diameter to connect the two together the corks that I use to fit the tube are quite large so a 25 mm hole is drilled using a hand brace and bit and aurger( battery drill and flat bit will do) the hole i drill is 10 mm in from the inside edge of the bark so normaly around 20 in total, this then has the cork and pipe stuffed into it and then into the demi john the whole lot is covered with a lot of greenary to hide it as all my trees are in the public domain the date for this is normal around the 24th of feb, as the sap will rise between then and the 20th of march after that the tree is best left alone till next year, by the way i dont do any angle of dangle with the drill bits just straight in, the other way is to use a clear tube of 13mm diameter and drill the same size hole of 13mm anf them push the pipe in and stuff the other end into a empty milk container and then seal it with duck tape and again cover it up, maximum you want to rob from a tree is a gallon and after wards what i do is I come along with a wooden dowel made from one of the trees brachs of the same size and drive it home with a big hammer, you can use clay or another cork but its very hard to reuse the same hole as it will heal over and seal so you have to drill a larger hole than last time to cut the new fibres