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  1. #1
    Join Date
    1st September 2010
    Location
    Tucson, AZ
    Posts
    1,041

    Ever hear of a Longworth Chuck? May build a set for glassing tubes...

    Was just doodling around the net tonight, and somehow found this gem:
    http://ravenview.com/blog/2010/10/17...ngworth-chuck/

    I've got the tools to build this, and am thinking of making a smaller version (x2) to have a self-centering adjustable mandrel for tube glassing that could be easily motorized as well! The blog post shows the device holding a turned bowl on a lathe, but I don't see why you can't hold a cylinder from it's ID...

    Anyone heard of this before? Other ideas for holding cylinders?

    NAR 96681
    L1 - May 29, 2014 LOC Norad ProMax, H120
    L2 - Feb 21, 2015 Fiberglassed Madcow Frenzy, J280

  2. #2
    Join Date
    23rd July 2011
    Location
    Butte, MT
    Posts
    2,133
    Since you asked for other ideas, a test plug the right size, chucked in either a three jaw or four jaw chuck should be easy and cheap, but for large tubes the Longworth chuck looks great!


    Steve Shannon

    Steve Shannon
    L3CC, TAP, Director, Tripoli Rocketry Association

  3. #3
    Join Date
    13th October 2014
    Location
    SouthEastern, WA
    Posts
    5,545
    Was not aware of the name or history of the device, but I have seen several commercial versions available from various woodworking vendors.
    Rich

    NAR# 99154

    L3-4x upscale Estes Cherokee-D- AT M1297W 5/28/2016 http://www.rocketryforum.com/showthr...r-rharshberger

    TriCities Rocketeers NAR section# 736 http://www.tricitiesrocketeers.org/

  4. #4
    Join Date
    25th January 2009
    Location
    Glennville, GA
    Posts
    17,897
    This should work.
    -----------------------
    Chuck Haislip
    NAR/Tripoli Level 3
    Formerly a Prefect of ICBM - TRA #60

    Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
    Level 3 - 10 inch Nike Smoke
    2015 Ns for Year: 1315 Newtons
    My rockets usually fly naked. If they survive, they earn their paint.

    Come fly with ROSCo or ICBM in Camden SC => http://rocketrysouthcarolina.org

  5. #5
    Join Date
    13th April 2013
    Location
    San Francisco
    Posts
    1,288
    That is an interesting looking tool which might work as well for slotting, at least if the slots don't come close to the end of the tube.

    I was also thinking about something that would clamp inside the tube, so you could square it perfectly since many times tubes, especially larger sizes are roughly cut to length. Perhaps a Longworth-style chuck with larger/longer buttons that could clamp inside the tube without touching the end.

    AERO-PAC, ROC, LUNAR (TRA & NAR)
    jcrocket.com thrustcurve.org

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