After grinding about a dozen daggers over the years, the biggest thing I learned is that symmetry lives or dies at the layout stage, not at the grinder. Scribe your centerline on both flats before you even touch the steel, then punch it deep so it survives 80 grit. Check it against a surface plate constantly. If your centerline wanders even a hair by the tip, the whole point goes crooked and no amount of finish work fixes it. Take the grind slow and alternate sides every few passes. This keeps heat down and keeps one side from hogging faster than the other. I use a set of calipers on the blade thickness at the same spot on each flat, and I write the numbers down instead of trusting my eyes. Eyes lie when you have been staring at the thing for two hours. On the handle, dry fit everythign before glue day. Spacers and bolsters stack up errors fast, so sand each piece flat on glass and stack them up against a straight edge. If the stack rocks, keep sanding. A few minutes there saves you a lopsided handle you cannot undo after epoxy sets.
A quick guide to dagger symmetry that actually worked for me
Oct 12, 2026
Last reply: 16 hours ago
3 Replies
I learned the centerline lesson the hard way on a 10 inch dagger about three years back. My scribe line was too shallow and it vanished under the rough stock removal by the time I got near the tip. Ended up with a point that pulled to one side and no way to fix it without regrinding below the line. Now I use a height scribe and also run a fine marker along the edge bevel so I can see both references at once. The ink holds up better than I expected at 60 grit and it gives me a backup if the line starts fading.
On the alternating passes thing, I do the same but with a twist. I mark a small dot on the ricasso of the side I just ground so when I walk away for a minute I remember where I left off. Sounds dumb but after a long session at the grinder you genuinely forget.
For the handle stack, I go one step further and clamp the whole dry fit assembly to a piece of angle iron to check it. A straight edge alone will let a slight bow hide in the middle of the stack.
Writing the numbers down is what finally got my last dagger even. I used to eyeball the flats and every blade came out thicker on the right side, turns out my right arm just pushes harder without me noticing. Picked up a cheap pair of digital calipers and started logging thickness at three spots each pass. First blade after that came out dead even and it honestly felt like cheating after years of guessing. On glue day I also switched to the slow set epoxy, gives me a couple minutes to nudge the stack true before it grabs.
This is kind of blowing my mind because I always assumed the point going crooked was just me being bad at holding the piece steady. Never thougt the problem started before the grinding even began. I have only made a couple of blades and both came out slightly bent to the left at the tip and I could never figure out why.
When you say check it against a flat surface constantly, do you mean like laying the blade down flat and looking for gaps under it, or something else? I want to try this on my next one but I am not totally sure what I shold be looking at.
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