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| Remove Seized on chuck ?? |
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| Pete W.:
Hi there, Mick, Sorry to hear of your problem especially after all your work and with the lathe looking so good! Could you make one of those gizmos that grip in the bore at the rear end of the spindle? With a tapered plug drawn into a tapered bore by a draw-bolt to expand it in the lathe mandrel bore. Like the mandrel handles some folks use for threading. If that could be made to get a firm enough grip on the lathe mandrel, it would avoid using the gears to lock the mandrel and risking the dreaded toothe-ache! If I remember rightly, you do have another lathe? |
| awemawson:
Was the chuck at a different temperature to the spindle when you put them together? Invert an HSS tool you care little for but is beefy in tool post, run lathe slowly in reverse, take an intermittent heavy cut on something suitable in scrap bin. Have 'chuck board' under chuck for when it unscrews, hover hand / foot or whatever over brake and watch like a hawk |
| stig:
Mick, with the chuck attached can you clamp a section of hex bar in the jaws and then use an air powered impact wrench like they use for car wheel nuts to undo it off the threads? |
| tekfab:
Strip it back to the backplate as in your third picture and use heat, don't piss about with a blowlamp either use oxy/acet or a tig set up will keep the heat more concentrated and it should spin off no problem. Mike |
| tom osselton:
I would go for the running in reverse using the cutter or the impact first. |
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