Lantern chuck DRAWINGS

Image of a brass and steel lantern chuck
click to open the video on Youtube

I made a video on Youtube about making a lantern chuck which I needed to grip a batch of M5 cap screws so I could machine a domed end to the threaded shaft, then polish them. A few folks have asked for the drawings. If I made another of these, I’d probably make the brass collar 10mm longer and the openings 15mm longer, and maybe make the collets slightly smaller. I don’t have a drawing of the insides of the shaft, it is just a simple magnetic hex-socket fitting as used to hold screwdriver bits, in a hole reamed to be a sliding fit. I milled a slot in the side and fitted a dog-point grub screw to prevent rotation, then used another grub screw in an M6 tapped hole at the rear end to fix the position of the bit-holder. Finally, I made a pointed locking grub screw to clamp the other grubs screw in place. Details are on and drawings are here. I can send the DXF on request, I can’t upload it here

3 thoughts on “Lantern chuck DRAWINGS”

  1. Many thanks for sharing this drawings.
    My condolences for the loss of your wife Caroline
    Greetings Ronn

  2. Thank you for posting the Youtube video.
    I’ve always wanted to build one of these and now I’m going too. That magnetic insert bit holder is a fantastic idea.
    I would love to have the drawing in DFX.


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