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Thread: Rock Chuck split collet in CarveTight spindle?

  1. #1

    Default Rock Chuck split collet in CarveTight spindle?


    0 Not allowed!
    I'd like to run 1/4, 1/8 and 3/8" shank bits in the CarveTight. Can I use the two-piece/split collet for the Rock Chuck with these diameters of bit, and hold securely in the CarveTight?

    Can the Rock Chuck collets hold solid carbide tooling, or are they only for high speed steel like the CarveTight?

    Thanks!
    jkpq45

  2. #2
    Join Date
    Jan 2007
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    NE PA USA
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    I don't have a good answer for this question... It will be a trick to get the split collet in the right position where the bit wedge is effective in holding it tight. If you got the collet turned where it was not pinching the internal bit then you could have a problem. The Rock Chuck had 1/2, 1/4, and 1/8 inch options in the heads provided but that is not an answer since you have a CT.

    I think it is going to be a Gamble.... And you are likely to loose.... I had a 60 degree bit fly out of the original QC and as I was walking out of the shop it hit the clear plastic door pushing it open enough to shut down carving before falling back inside the machine.

    I use a Set Screw type bit holder with a 1/4 inch shank to hold my 1/8 inch Circuit Board Bits. I also have a 1/2 inch bit holder that holds a 1/2 inch bit that is really a Bit EXTENDER. I bet you would have better control over putting a bit in the bit holder and setting the SET SCREW with a split collet with the 1/2 inch to 1/2 inch bit extender.

    This is 1/2 to 1/4. https://www.rockler.com/rockler-rout...-in-shank-bits

    This is 1/2 to 1/2. https://www.rockler.com/rockler-rout...-in-shank-bits

    Both Rockler options require METRIC Wrenches and were given bad reviews because of it... I think that is unfair...

    My 1/4 to 1/8 is a Roto ZIP Bit Holder. Caution Roto Zip Bits are soft and can bend... Not for CW.

    There is a new "After Market" non LHR product in development that uses a standard router bit holder in 1/2 and 1/4. It will be a single shaft like the CT when it goes into production. So you could convert your QC type truck or even a CT Truck to work with a standard router bit holder by replacing the SHAFT. Not a project for everyone and likely be offered as a service... Swap your shaft. Rather than swap with a Truck as there are at least 3 flavors of TRUCK... And sending in one with no holes and getting back one with the black washer on the one screw hole that likes to SNAP the Casting would not be good for reviews. So what you send in you get back.

    As far as 3/8 inch bits... ??????


    AL
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  3. #3
    Join Date
    Oct 2009
    Location
    Ohio
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    I have a Rock Chuck with the 3 collets Al talked about, I only run solid carbide bits but the collets will hold both carbide and high speed. Being the 40+year machinist that I am, I used many different collets and it doesn't matter if it's carbide or high speed, it's the diameter of the shank that matters. Hope this helps.
    CarverJerry

    ver. 1.187 Win 7- 64b with 6 GB ram @ 2.8Ghz and dual 1Tb hard drives. Rock Chuck & Ringneck vacuum system hooked up to a 1.5hp Cincinnati drum vacuum. Center line text, conforming vectors.

  4. #4
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    Jerry.....I'm a little confused. I've always been under the impression that carbide shafted bits would slip in the CT adapters.....only use steel. Do you disagree with that?
    Livin' Life
    Lovin' My Carvewright

  5. #5
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    I totally disagree with that. If you ever experience slippage with a tool because that tool may be slightly undersize (which is very uncommon) you can use a little chalk on the shank to make it hold better. an old trick us old timer machinists use.
    CarverJerry

    ver. 1.187 Win 7- 64b with 6 GB ram @ 2.8Ghz and dual 1Tb hard drives. Rock Chuck & Ringneck vacuum system hooked up to a 1.5hp Cincinnati drum vacuum. Center line text, conforming vectors.

  6. #6
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    Thanks Jerry
    Livin' Life
    Lovin' My Carvewright

  7. #7
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    Nov 2008
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    Vancouver Island
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    I like the chalk trick. Have to give that a try. I have had problems holding carbide bits in much better chuck systems than the CT split collet. Smooth carbide bits plus resonant vibrations can "walk" out of the tightest collects. The long bits, especially, are really hard to hold. Only the press fit CT adapters seen to be able to hold the long bits. I think it has to do with high frequency sound waves traveling through the shank.
    Last edited by bergerud; 19 Hours Ago at 08:03 PM.

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