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I?ve got the same thing it works good maybe not too good for on ears though I?ll still use a drill bit.
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had a few things from them with out problems..
lyn/
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 Not wishing to hijack Andrew?s thread?.What?s your experience of Aliexpress? Any good?
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Member Videos / Re: My week this week, my workshop videos!
« Last post by hermetic on Today at 10:50:47 AM »
Hi folks,

We start to wind up field work for the year, make a start on fixing the poly tunnel door, and on Wednesday, for my sins, I help to fit a new vinyl roof to an aircraft hangar! Nobody died so that was a good outcome! The 2cv tractor is rescued from the healing weeds, and soon its back to the nice warm workshop! video goes live at 4-00pm BST.

Phil, in damp but not cold East Yorkshire!

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I got one of these recently. Wifi camera that fits into @5mm holes, with built-in led light, works with your phone and only a tenner or so. I'm not stupid enough to use it for its alleged purpose but it's ideal for examining deep, narrow bores like yours.

https://www.aliexpress.com/item/1005009894988752.html?spm=a2g0o.order_list.order_list_main.58.13a51802c6uM3r
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The bolts arrived at last: First task reduce t he last few threads as suggested by Mike, but how to hold them. Normally I'd take a suitable nut and saw cut to make it into a split collet - but no 7/16 UNF nuts. Ah but I do have a 7/16 UNF Die - naughty but it'll work:

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Now we need 'pushers' as the hole is deeper than the bolt thread:

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So screw them in and see if they work - answer YES!! though I have to make progressively longer pushers.

We have lift off:

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That's enough excitement for one day - I have to go to Heathfield and buy some sheep wormer !


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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by awemawson on November 06, 2026, 08:26:59 AM »
Very sensible suggestion Mike. Similarly I'll make my packer pieces a loose fit in case the ends bell over.
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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by smiffy on November 06, 2026, 06:01:05 AM »
Before using the bolts it might pay to reduce the last couple of threads to the root diameter in case when tightening the bolts
the last threads are damaged and  expand into the taped hole making them difficult to remove. I speak with experience of this  happening .  Mike
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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by awemawson on November 06, 2026, 05:52:40 AM »
Still waiting for some 12.9 grade bolts to use as potential extractors, but in the mean time I've tapped those two 9.9 mm holes out to 7/16 20 TPI. 15 threads so 3/4" deep should give enough thread engagement I hope.

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There seems to be a distinct ridge in the hole about 25 mm down as though the front disk in the centre of the tool disk is a separate part - perfectly possible that the bolts trap it against a flange I suppose. Can't get a decent picture down the tapped hole but it's more visible removing one of the holding bolts.

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If the bolts arrive tomorrow all should be revealed
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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by awemawson on November 04, 2026, 01:45:51 PM »
Yes Mike that also dawned on me a couple of hours ago prompted by the hole beings almost 3" deep!
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