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Nebula dual-axis tracking assembly: star knob, spring and idler wheel, close-up, on black with a purple glow

Troubleshooting

Axe Sticks in the Wood or Bounces Off

Work back from what it is doing to what caused it, then to the fix that addresses the cause. Nothing here needs a sign-up.

Axes and tomahawks in a working knife shop
If a symptom appears mid-job, put the work down and check it before continuing.
Thin-bladed axe lodged in a notch cut into a bark-covered green log lying on a dark chopping stump in a small shop

The flow

Work it in this order

Causes first, then the quick checks, the fix, prevention and the stop-work point.

  1. Likely causes

    Sticking: cheeks too thin and flat for the wood — the head penetrates like a knife and wedges like one; classic with lean felling profiles in soft green wood, and with vintage heads whose cheeks wore hollow through decades of filing (see Axe Geometry). Bouncing: the reverse — splitting-grade wedge cheeks or a too-obtuse edge asked to fell; or a rolled, dull edge; or dense seasoned hardwood that simply out-hards a lazy angle. Wrong-axe-for-job explains most of both: felling geometry sent splitting and vice versa.

Felling axe beside a green log round and a splitting maul beside split firewood, each lying on a dark pad in a shop.

  1. Quick checks

    Watch one careful swing: deep-and-jammed = penetration exceeding relief (thin cheeks); shallow-chip-and-ring = relief exceeding penetration (fat cheeks or dull edge). Straightedge across the cheeks — hollow behind the bit means worn-in stick. Thumb the edge for rolls and flats. Then ask the honest question: is this axe's pattern even meant for this wood?

Worn axe head cheek lying on a dark pad beside a plain steel straightedge on a scarred workbench.

  1. Fixes

    Match or modify. If the axe is simply miscast for the job, swap axes and both symptoms vanish — the whole argument of the field guide. To fix a sticker: restore cheek convexity — build the high centerline back on the platen and slack belt (the restoration guide's most common regrind), so the head releases as it cuts. To fix a bouncer: sharpen first (a keen convex at 25-ish inclusive fixes most), then thin the cheeks gradually toward a felling profile if the pattern allows. Angled felling strokes (45 degrees to the grain) also cure half of sticking complaints — straight-in chops wedge in any geometry.

Gloved hand steadies the haft as a bare hand hones a curved axe bit with a round puck stone, the head clamped in a vise.

  1. Prevention

    Buy the pattern for the actual wood. Maintain the convex at every sharpening instead of flattening it (Sharpening and Care), and check cheek profile yearly on working axes — geometry drifts one filing at a time.

  2. When to stop

    Stop grinding when a regrind approaches the bit's hardened zone limits — an axe thinned past its hard case chips and folds forever after (see Bit Steels). And a bounce off a KNOT with a good edge is physics, not geometry: aim differently.

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Guides that cover the cause

The long-form version of the fix above, written from the same bench.

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When the machine is the cause

Flex, a soft platen or a tracking knob that will not hold can show up as a bad grind. I machine the parts, hand-assemble, track and test each Torus grinder in Sterling, Illinois.

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