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Infinity Cutting Tools Blog

  • When 1/4"-shank Router Bits Make Sense

    Infinity Router bits

    A guest post by Tom Iovino

    When my mom gave me my first router for my birthday a bunch of years ago, it had a 1/4″ collet. She gave me a collection of some pretty useful 1/4″ shank bits to go along with it. That was totally awesome.

    Until everything I read said that no, you don’t want to use 1/4″ shank bits. The 1/2″ shank bits have more metal in them, meaning they are far more stable, stronger and able to give cleaner cuts.

    So, I laughed as I gave away most of my 1/4″ shank bits. I mean, I was on a mission to eliminate them from my router bit collection. After all, they were inferior, right?

    Tom Iovino A love affair with my router

    Not so fast. I have recently come to kick myself for giving up the nice collection of bits I had amassed. I bought one of these – a DeWalt 611 multi-base trim (or compact) router. It’s called a trim router because, way back in the day, they were really only used by cabinet installers to trim laminate and do some light work on a job site. That was until woodworkers discovered just how handy these little babies really are.

    With these routers, you can rout small dadoes with just one hand. You can put a profile on an edge. You can do a ton of different jobs that would be too small, too delicate or too restricted for a bigger unit. The DeWalt also has some sweet features that other routers in its size range just can’t touch – LED lights in the base and both a plunge and fixed base. It’s router nirvana.

    I have had to find some good advice on going back to the 1/4″bits that I so hastily disposed of. Fortunately, I was recently at the Infinity Cutting Tool’s router basics class last month, where I had a lot of time to ask a bunch of what I thought were stupid questions, but were pretty darned smart after all.

    1/4"-shank vs. 1/2" shank router bit 1/4"-shank vs. 1/2" shank router bit

    For instance, I asked why anyone still made 1/4″-shank router bits at all. David Venditto, owner of Infinity Cutting Tools and an old hand at router bit technology, was able to explain that for small-diameter router bits, it would be wasteful to make those with a larger shank. For instance, we were using the instructor’s DeWalt 611 (no wonder I wanted one so badly) to do some hinge mortising. So, we went with a small down-cut spiral bit. That’s when I asked why spiral router bits that were 1/4" or 1/8" cutting diameter didn’t come with half inch shanks. He told me that there would be so much material removed from the shank, it would drive the cost up considerably, yet not provide any advantage.

    Rounding over an edge with a compact router

    Another situation comes into play when you're trying to use edge-molding bits. For simple, small-radius roundovers, chamfers and the like, there is very little wood being removed. Since that is the case, the router doesn’t need to be a full powered animal – a smaller, more maneuverable router could do the job just as well.

    And, in many cases, proprietary router bits for jigs sometimes are available only with 1/4″ shanks. The Keller Dovetail Jig, for instance, uses 1/4″-shank bits for both the tails and pins. Since that's the case, replacement bits for these jigs need to be made to match.

    Mismatched cutters on 1/4"-shank router bit This router bit should have been manufactured with a 1/2"-dia. shank. The large cutters removing a lot of material will cause vibration and lead to rougher cuts.

    David was very clear when he explained that 1/2" shanks were far more preferable when removing larger amounts of material. And, even though some manufacturers do make bits such as stile and rail sets that have 1/4" shanks, it’s better to have more mass and strength in the bit to reduce chatter and prolong the life of the bit.

    OK, maybe the announcement of the demise of the 1/4″-shank router bit was a bit premature. With this new generation of fully-featured compact routers, the 1/4″-shank router bit will probably see a renaissance. And, that’s OK with me!

    Read more from Tom at Tom's Workbench. 

  • Divided Lights and Window Sashes

    NOTE: For more recent articles about using our Window Sash Bits, click here for Part One and here for Part Two. You can also view newer videos on how to use these bits below:


    I have a 93 yr old bungalow that I have deemed my beautiful money pit. It has constant need for maintenance, upkeep, and repairs. This has made me very excited about the Infinity Window Sash router bit set. Being able to rebuild the windows or interior French doors without having to go to the salvage yard is worth the little bit of set-up and work this bit requires. Continue reading

  • Using the Earlex Steam Generator to Bend Wood

    Photo courtesy of Louis Cahill Photography Photo courtesy of Louis Cahill Photography

    I have a project coming up that has a bent panel and bent edge. First, let me say that I love bending wood. Its one of my favorite aspects of woodworking because it allows you to create even more interesting shapes and designs. Continue reading

  • All About Carbide Cutting Tools for Woodworking

    IMG_1685

    By: Tom Iovino

    I can remember my dad’s old table saw blades. Those suckers were all high-speed steel, with the teeth alternately set to clear a kerf in the wood. And, I can also recall my dad complaining that they were dull and had to be sharpened all the time. What would have fixed this problem was maybe something that could stay harder and sharper between sharpenings. Continue reading

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