If you’ve been here more than once, you know I’m a hand tool guy. To be clear, I do have power tools that complement primarily hand tool work. My lunchbox thickness planer does the donkey work once there is a tried and true reference face and a squared reference edge off the jointer plane. A double bevel compound miter saw quickly cuts stock to rough length. And you can pry my benchtop hollow chisel mortiser from my cold, dead hands. I also have a small drill press (that at this point is used exclusively for accurate drawboring), a collection of battery-powered DIY tools (a drill driver, a circular saw and a random orbital sander), and a trim router kit for when I’ve truly given up on things.
But doing hand work efficiently is more than just leveraging power when, as and if it makes sense. When there are multiple parts to cut (there always are), it helps to think like a one-person assembly line. Each step in the assembly line is a repeated task. Sure, variety is a the spice of life. But just like a blade and fence setup at the table saw, you want to set it once, do all the cuts, then move on. It’s the same thing for body mechanics at the workbench.
So let’s talk about tapered octagon legs by hand.
The first two tapers on each piece (on opposite sides) go pretty quickly in the face vise. If you work to opposite sides, the other profile is still square and therefore easily held in the vise (in my case, a leg vise). Do that eight times.
If you have a twin screw vise that can hold tapers securely, great. Stay at the face vise. But I don’t, so I move to the tail vise. Pinched between the dogs, the legs sit flush to the bench on the tapers I had just planed to make a square taper on all faces. Do that eight times.
Now lay out the octagon(s). If you have a lathe and will taper across the entire length, you’re nearly done at the workbench. But I don’t have a lathe and I like to start the taper where the round tenon ends, so in addition to the octagon at the foot, I also lay out an octagon on the top where the tenon will go. A cradle jig that goes in the tail vise holds the work and I taper from square down to octagon at the foot and also from square down to an octagon at the top. Do that thirty-two times (16 long tapers and 16 short tapers).
That short taper makes it easier to center the round tenon cutter I have for my drill driver, btw. I use a 1 1/2″ tenon cutter, but that’s just a rough cut. With chisel, spokeshave and rasp I take that round tenon down to 1 3/8″ to ensure it’s centered on the blank (it rarely is straight off the tenon cutter). It also helps to bore a 1 3/8″ hole in some hardwood (or at least wood that is harder than your blank) with the bit you’ll use for the mortise to test the fit now and again. Do this four times.
Finally, I go back to the corners (where they were tapered from square to octagon) and plane in the full tapered octagon from the tenon to the foot. I find taking the facets down evenly first (so the facet is parallel from the tenon to the foot), and then incrementally increasing the facet width at the top near the tenon by counting strokes, works best. Again, if you taper the full length, this step is unnecessary.
It goes without saying, but I did one leg first to work out the process and then batched out the other three with the process described above. Are they perfect? Of course not. But we are not machines (and should not strive to be machines). And I enjoy the hand made aesthetic far more than machine-wrought perfection.
There is a great rhythm one can get into when batching out parts at the bench. Hehe, batching.