we are both right alf, there is no "perfect height", not least because none of us are exactly the same height.
percieved wisdom in metalworking was that you built the bench so that your metal vice was just below elbow height, since you did almost all of the hand work in the vice. however i find that the vice should be just above the middle of your elbow because then it is easier to ensure that you file flat because it is natural to move your arm in the arc that basically stays horizontal.
personally i would doubt that many of us amateurs will often plane too many pieces of wood that are more than 4 inches thick, so we should i guess aim for a height which makes that and 1-3 inch thick wood comfortable, and that is without thinking about the plane thickness itself.
when i returned to the "art" i believed like so many that the thing to do was to push the plane to cut whereas in fact i now know that it is better as derek says to let the plane do the work. it seems to me that when we start particularly with little proper training , we all want to take too thick a cut,
whereas it is more efficient and more effective to take smaller shavings. certainly my recent minimal experience shows that the smaller the shaving the more speedily i get to where i want, and more importantly i get there more accurately, which is really the point.
these days i have joint pains, particularly in the wrists and thus having these more in line with my arm is more comfortable, and thus more effective. it also makes it easier to move along a longer piece of wood. having finally finished the basics of my latest bench, i am presently making the holes for my veritas bench dogs. amazing how few spade bit holes my 12 volt dewalt will drill on each charge, through the 40mm beech top. lovely smell of burning wood :lol: :lol:
with my arm span i can plane about 600 mm easily in one movement but 1200 requires me to move at least once. with my arms locked in the horizontal, i find it much easier to do the "chuck berry duck walk" ( shows how old i really am :roll: ) this bench is 900 high to the top of the table, which allows me to use both my metal planes and my wooden ones in my normal stock which tends to be up to 50mm thick.
not sure how much this helps in choosing the plane, but i looked and now i have the following lv no6 and 4 1/2, ln 62, 164, and a number 9, plus a clifton no 5. plus a number of wooden planes including a couple of coffin ones which i must learn to fettle properly. i am also fettling at last the record no 4 and my bailey 41/2 planes which are going to be interesting to compare.
paul :wink: