Home Made Lathe, Safe?

[Pete.Participant @pete-2]

Every now and then I see something, and just don't have words to describe.

The bolts coming out the chuck look like a medieval torture device.

I don't mean to be unkind, but this just looks flat out dangerous.

**LINK**

[Pete.Participant @pete-2]

Ebay Find

[Michael GilliganParticipant @michaelgilligan61133]

At the current bid of £10 someone would probably get a bargain

… as long as they render it down to a collection of components !!

MichaelG.

[jimmy bParticipant @jimmyb]

Words fail me!

Jim

[Ady1Participant @ady1]

Looks fine to me

[Anonymous]

It's a box chuck, albeit larger than normal. Box chucks are standard accessories for clockmakers and instrument lathes.

Andrew

[JasonBModerator @jasonb]

I should think it would be OK to free hob a few gear on

[Ian ParkinParticipant @ianparkin39383]

Interesting use of a variable speed on a single phase induction motor too.

[Rob McSweeneyParticipant @robmcsweeney81205]

Posted by Michael Gilligan on 02/10/2021 17:33:24:

At the current bid of £10 someone would probably get a bargain

… as long as they render it down to a collection of components !!

MichaelG.

Seller has set a reserve "to cover the cost of components" which suggests that – a. buying it as a source of parts won't be an economic proposition, and b. he won't find a buyer.

[Dave HalfordParticipant @davehalford22513]

Posted by Ian Parkin on 02/10/2021 18:34:56:

Interesting use of a variable speed on a single phase induction motor too.

There's probably a trigger off a mains drill somewhere

[Ady1Participant @ady1]

I like the spindle flywheel counterweight

[larry phelan 1Participant @larryphelan1]

At least it,s Made in England. Can,t be that bad.

[Tony Pratt 1Participant @tonypratt1]

Vibration free at 2950 rpm, currently 2 bids maybe sailors looking for a boat anchor?

Tony

[BazParticipant @baz89810]

Only thing that puts me off is collection from Kilmarnock, can’t get any fuel to get there!

[Peter Cook 6Participant @petercook6]

Posted by Ian Parkin on 02/10/2021 18:34:56:

Interesting use of a variable speed on a single phase induction motor too.

Not sure that's an induction motor as its rated at 2950 rpm. More likely to be a universal brushed motor and the speed controller is probably one of these

Edited By JasonB on 03/10/2021 13:07:25

[John HaineParticipant @johnhaine32865]

They don't use universal motors on grinders because of the risk of overspeed and I can imagine a cheap grinder using an induction motor quoting its speed as 2950, synchronous speed being 3000 on 50hz.

[noel shelleyParticipant @noelshelley55608]

John, Syncronous speed 3000rpm 50hz, slip and losses =2850rpm(or so) for a 2pole motor.on load.Noel.

[Peter Cook 6Participant @petercook6]

John, Noel – the motor is clearly marked 60Hz 240V, and if you look at the closeup of the speed controller, inside the red box it looks like the one I linked to.

But I must confess I haven't tried my controller ( used for an old electric drill) on an induction motor. I wouldn't expect it to work.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Peter Cook 6 on 03/10/2021 13:04:56:

John, Noel – the motor is clearly marked 60Hz 240V, and if you look at the closeup of the speed controller, inside the red box it looks like the one I linked to.

…

.

Presumably the link that Jason removed [see Code of Conduct]

MichaelG.

[John HaineParticipant @johnhaine32865]

Ah, only looked at the photos on my phone, didn't see the motor plate. But a 240V 60Hz motor in the UK? Where did that come from? I just assumed that the 2950rpm was a bit of typical specmanship. I can imagine that the horrible induction motors used in cheap grinders would "speed control" down to 0 rpm run off one of those controllers, and up to max, just not very linear!!

Edited By John Haine on 03/10/2021 13:47:49

[DalboyParticipant @dalboy]

We had a Black museum when I was at work of some of the things people did to power tool this should have been in that

[Peter Cook 6Participant @petercook6]

John, Noel – the motor is clearly marked 60Hz 240V, and if you look at the closeup of the speed controller, inside the red box it looks like the one I linked to.

But I must confess I haven't tried my controller ( used for an old electric drill) on an induction motor. I wouldn't expect it to work.

[Michael GilliganParticipant @michaelgilligan61133]

Well … it sold for £12.50 so we don’t need to worry any more

[ until the proud new owner turns-up on the forum ]

MichaelG.

[Howard LewisParticipant @howardlewis46836]

A bench grinder for £12.50 sounds like a bargain.

Definitely one for the DIYer's Black Museum, to my mind.

Wonder how well the Headstock is aligned to the Bed? With difficulty?

Maybe a sow's ear waiting to be changed into something better, but will take a lot of work and time to become a silk purse or anything approaching it.

But it is a starting point for a budding machinist to gain experience

Howard.

[Brian JohnParticipant @brianjohn93961]

What…no milling attachment ?

[Author]

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