Freud 04-100 1/8-Inch Double Flute vs Freud 12-128 1/2-Inch Straight Bit
Both made our Best Straight Router Bits 2026 shortlist, at #1 and #3. Here's how they differ and who each one suits.
- BuyOnceRight Research Desk
- Updated
- 4 min read
Quick verdict
Choose the Freud 04-100 1/8-Inch Double Flute Straight Bit if you want tiCo carbide is harder and stays sharper longer than standard carbide in straight bit service. Choose the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind if you'd rather have eclipse grind produces a shearing action that leaves smoother groove walls than a standard grind. Overall we rank the Freud 04-100 1/8-Inch Double Flute Straight Bit higher: #1 versus #3 in our Best Straight Router Bits 2026 list.
Winner overall: Freud 04-100 1/8-Inch Double Flute Straight Bit
Freud 04-100 1/8-Inch Double Flute Straight Bit vs Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind compared
Every difference that matters, in one table.
| Attribute | ||
|---|---|---|
| Our ranking | #1 of 8 in Best Straight Router Bits 2026 | #3 of 8 in Best Straight Router Bits 2026 |
| Pick label | Best Overall | Best Premium |
| Brand | Freud | Freud |
| Key features | 1/4-inch cutting diameter; TiCo carbide; Two-flute design | Eclipse grind geometry; 1/2-inch diameter; 1/2-inch shank |
| Biggest strength | TiCo carbide is harder and stays sharper longer than standard carbide in straight bit service | Eclipse grind produces a shearing action that leaves smoother groove walls than a standard grind |
| Main trade-off | 1/4-inch diameter only -- one size | Higher price than a basic straight bit |
| Best for | buyers who want the best overall package | buyers who want the best overall package |
Which should you buy?
#1 pick · Best Overall
Choose the Freud 04-100 1/8-Inch Double Flute Straight Bit if…
- TiCo carbide is harder and stays sharper longer than standard carbide in straight bit service
- 1/4-inch diameter is the most commonly needed groove width for shelf pins, small dadoes, and slots
- Two-flute design provides clean cut walls and good chip clearance
Best for: buyers who want the best overall package
Prefer the alternative? See the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind section.
#3 pick · Best Premium
Choose the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind if…
- Eclipse grind produces a shearing action that leaves smoother groove walls than a standard grind
- 1/2-inch diameter and shank for maximum stability in production dado and groove cutting
- TiCo Hi-Density carbide holds an edge through repeated production cuts
Best for: buyers who want the best overall package
Prefer the alternative? See the Freud 04-100 1/8-Inch Double Flute Straight Bit section.
Pros and cons of each
Freud 04-100 1/8-Inch Double Flute Straight Bit
Pros
- TiCo carbide is harder and stays sharper longer than standard carbide in straight bit service
- 1/4-inch diameter is the most commonly needed groove width for shelf pins, small dadoes, and slots
- Two-flute design provides clean cut walls and good chip clearance
- Freud 04-100 is the reference recommendation for general straight bit purchases
Cons
- 1/4-inch diameter only -- one size
- Need to buy multiple bits or a set to cover different groove widths
Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind
Pros
- Eclipse grind produces a shearing action that leaves smoother groove walls than a standard grind
- 1/2-inch diameter and shank for maximum stability in production dado and groove cutting
- TiCo Hi-Density carbide holds an edge through repeated production cuts
- The professional choice for cabinet dado and groove work
Cons
- Higher price than a basic straight bit
Freud 04-100 1/8-Inch Double Flute Straight Bit vs Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind: common questions
Which is better, the Freud 04-100 1/8-Inch Double Flute Straight Bit or the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind?
Choose the Freud 04-100 1/8-Inch Double Flute Straight Bit if you want tiCo carbide is harder and stays sharper longer than standard carbide in straight bit service. Choose the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind if you'd rather have eclipse grind produces a shearing action that leaves smoother groove walls than a standard grind. Overall we rank the Freud 04-100 1/8-Inch Double Flute Straight Bit higher: #1 versus #3 in our Best Straight Router Bits 2026 list.
What is the difference between the Freud 04-100 1/8-Inch Double Flute Straight Bit and the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind?
The Freud 04-100 1/8-Inch Double Flute Straight Bit stands out because tiCo carbide is harder and stays sharper longer than standard carbide in straight bit service, while the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind stands out because eclipse grind produces a shearing action that leaves smoother groove walls than a standard grind. The trade-offs differ too: the Freud 04-100 1/8-Inch Double Flute Straight Bit's main caveat is that 1/4-inch diameter only -- one size, and the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind's is that higher price than a basic straight bit.
Is the Freud 04-100 1/8-Inch Double Flute Straight Bit worth it over the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind?
For most buyers, yes: it's our #1 pick. Consider the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind instead if 1/4-inch diameter only -- one size is a deal-breaker for you.
Who should buy the Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind instead of the Freud 04-100 1/8-Inch Double Flute Straight Bit?
The Freud 12-128 1/2-Inch Straight Bit, Eclipse Grind suits buyers who want the best overall package, while the Freud 04-100 1/8-Inch Double Flute Straight Bit is best for buyers who want the best overall package.