The bit spins in the hole but nothing curls out. It smokes instead of cutting, and the edges chew instead of drilling clean.
That is a dull point, not a bad drill. A drill bit sharpener manual fix costs less than a new set of bits. It takes only a few minutes at the bench.
This guide covers hand jigs, grinder attachments, and stone or file methods that never need a plug. It also covers when a powered unit earns its keep instead.
What Actually Matters in a Drill Bit Sharpener Manual Setup
Three things decide whether a sharpened bit drills straight or wanders. Those are point angle, lip length balance, and clearance behind the cutting edge.
Get the angle wrong and the bit skates on hard material or bites too hard into soft stock. A drill bit sharpener manual method has to hold that angle steady pass after pass. That consistency is why jigs beat freehand grinding for most people.
If you want to work out your point angle before you touch a wheel, do that first. How we compare sharpening gear across every edge tool covers our full approach. It spans knives, scissors, and drill bits alike.
Comparison at a Glance
| Method | Type | Best for | Price band | |
|---|---|---|---|---|
| Stone or file | Manual, no attachment | One or two bits, occasional use | Under $20 | |
| General Tools 825 | Manual, grinder mounted | Home shops with a bench grinder | Under $40 | |
| Drill Doctor 500X | Powered, dedicated machine | Mixed bit types, higher volume | Around $110 | Price |
The Manual Options That Actually Work
General Tools Drill Grinding Attachment
Best Manual Pick
Bench grinder attachment | 1/8 to 3/4 inch, plus letter, number, and metric sizes | under $40
The manufacturer lists a size range from 1/8 inch up to 3/4 inch. It also covers letter, number, and metric drills. It mounts to almost any bench or surface grinder and sets clearance angle from a built in table.
This is the drill bit sharpener manual pick for shop owners who already have a grinder. It suits anyone who drills often enough to justify a jig. Owner reports in machinist communities describe careful bolting and small, patient adjustments as the price of consistent results.
Skip it if you do not already own a bench grinder. It also is not the right choice for brad point, auger, or forstner bits. This attachment is built for standard twist drills only.
Pros
- Works with almost any bench grinder you already own
- Wide size range including letter, number, and metric drills
- Costs a fraction of a dedicated machine
Cons
- Useless without a grinder to mount it on
- First few setups take patience to true up
If you want a sharpener built only for this one job, skip the hobby attachment. Consider a dedicated grinder mounted sharpener instead.
Stone and File Methods for a Few Bits
A single dull bit does not need a jig. A fine India stone or small file can restore the edge. That only works if you hold a steady angle by hand.
This works best on larger bits, from 1/4 inch up. The edge is easier to see and feel at that size. Bits under an eighth inch are hard to true up this way, and often end up worse.
For the full technique on grinding freehand instead of by stone, see the bench grinder method we cover separately.
When It Is Worth Going Powered
Drill Doctor 500X
Upgrade Pick
Powered sharpening machine | 3/32 to 1/2 inch, 3/4 inch chuck optional | around $110
The manufacturer lists support for twist, black oxide, carbide, cobalt, and high speed steel bits. It also covers masonry and titanium nitride coated bits, with point angle settings of 118 and 135 degrees.
It ships with a replaceable 180 grit diamond wheel. A separate port restores or adds a split point.
This is the pick once a manual attachment stops making sense. That means a mixed metal shop, a full trade bit set, or tiny bits a grinder jig cannot hold. Owner reviews repeatedly mention that split point restoration alone earns back the price on masonry and cobalt bits.
Skip it if you only own a handful of bits or already have a bench grinder set up. The manual attachment above costs a fraction as much for that use case.
Pros
- Handles carbide and masonry bits a stone cannot touch
- Consistent angle without practice or a grinder
- Restores or adds a split point
Cons
- Costs around three times the manual attachment
- Diamond wheel eventually wears and needs replacing
See how the 500X fits into the wider Drill Doctor lineup before you decide on a model.
Mistakes That Ruin an Edge
- Skipping the angle check before the first pass, then chasing a wobble a jig would have prevented.
- Grinding both flutes unevenly, which throws the bit off center and drills oversize holes.
- Using a coarse wheel on small bits, which overheats the tip and draws the temper out of the steel.
- Forcing a badly worn bit back to size instead of retiring it when the steel is gone.
The Bottom Line
The bottom line: The General Tools attachment is the better first drill bit sharpener manual buy. Most home shops already own a grinder it can mount to. Step up to a Drill Doctor once bit variety or volume outgrows a hand jig.
FAQ
Can you sharpen a drill bit without any tool?
Yes, with a fine stone or small file. It only works well on larger bits where you can see the angle. It takes practice and suits an occasional fix, not a routine.
What angle should a twist drill be ground to?
Most general purpose bits use 118 degrees. Harder metals often do better closer to 135 degrees, which is why several sharpeners offer both settings.
Does a bench grinder attachment work on cobalt bits?
The General Tools attachment handles the geometry on cobalt bits the same as any twist drill. Cobalt is brittle under heat, so slow, light passes matter more than the tool itself.
Is a powered sharpener better than a jig for masonry bits?
For masonry and carbide tipped bits, a machine built for those materials is the safer bet. A basic grinder attachment is not designed for that combination.
How often do drill bits need sharpening?
It depends on material and use, not a fixed schedule. A bit that smokes, squeals, or leaves a rough hole edge is telling you it is due.
Browse our shop tested drill bit sharpener picks for powered and manual models side by side. Check our shop tool care archive for more gear guides.
Sources
- Drill Doctor: 500X product specifications. https://www.drilldoctor.com/products/500x
- General Tools: Drill Bit Grinding Attachment product page. https://generaltools.com/drill-bit-grinding-attachment