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 Post subject: XY table
PostPosted: Sat Jul 01, 2017 1:27 pm 
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Can anyone advise me on a good reasonably priced compound table to buy.
It will enable me to use carbide tipped tools for turning very hard wood on my woodworking lathe, iron wood and ebony blunt my hand tools.

Also, if anyone has a reasonably priced XY table for sale i northern midlands area of UK, I would be very interested.

Thanks in advance.

Basil9981.


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 Post subject: Re: XY table
PostPosted: Sun Jul 02, 2017 12:41 pm 
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I've moved this to the Tool Talk forum.


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 Post subject: Re: XY table
PostPosted: Sun Jul 02, 2017 1:23 pm 
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thanks.


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 Post subject: Re: XY table
PostPosted: Sun Jul 02, 2017 9:44 pm 
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You might be as well off looking for a secondhand metalworking lathe - other than patternmaker's lathes woodworking lathes don't come with that sort of set-up and many aren't suitable for conversion to a cross-slide/tool holder because of round bed bars, lightweight contruction, etc. - although there are exceptions, such as the Shopsmith which has a lathe duplicator specifically designed for it. If you do go hunting for a patternmaker's lathe, such as a Wadkin RS you'll possibly be shocked by the asking prices

Taking a different tack, would it be possible to use something like an aftermarket copy turning set-up? Below is the American Vega lathe copier:



Whilst this won't handle deep bowls it will probably get you 90% of the way there with most things, plus a bit of ingenuity. It can n=handle straight work plus template following usage. Not common in the UK, but I did come across the Fartools copier on Amazon. Hope that those links are of assistance, at least as a starting point

I do have to say that your choices in timber are fairly hazardous. For example ironwood is a nasal irritant and causes sneezing and coughing. If ingested it can be toxic and has been linked to deaths in cattle in some parts of the world. Ebony produces a fine dust which is also an irritant, but continued breathing of the dust sensitises you to it and can cause astham-like symptoms. In both cases if you are machining or sanding (as oppoed to using hand tools) I'd recommend that you rig-up some form of dust extraction hood and vacuum collection system (with a fine, pleated filter) as well as wearing gogges and an air helmet when machinig this stuff. Basic information on species toxicity is to be found here.

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 Post subject: Re: XY table
PostPosted: Mon Jul 03, 2017 1:13 am 
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Thanks Job and knock, Greatly appreciate the warnings about hazardous timbers etc, I'll need to review my P.P.E arrangements.
However, the reason I'm going down the route of a cross table is; I've seen a very good set-up on You tube with a professional banjo maker producing great results with relative ease. Look up "hickler banjo making lathe" on youtube and you'll see his ingenious idea seems to work perfectly.
All I need now is the cross slide table, firmly fixed to my bench together with the business-end of my lathe with the bed etc removed.
Cheers Basil9981


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 Post subject: Re: XY table
PostPosted: Mon Jul 03, 2017 12:37 pm 
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I can't help feeling that unless you need engineering type precision, or are copying, it's a lot of trouble and expense to go to.
I haven't turned any ironwood, but I've turned a fair bit of ebony, lots of oak, and other stuff like ply on occasion. Never had any real problem using HSS hand tools off the T rest.
What are you making?


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 Post subject: Re: XY table
PostPosted: Mon Jul 03, 2017 5:32 pm 
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Hi.

I'm making banjo rims. The main wood is either mahogany or hard maple.
The problem arises with the tone-ring part of the turned rim, it's either rosewood, iron wood, ebony or some other extremely hard tonewood as specified by my customer. This blunts the hell out of my tools and I've been getting lots of catches recently. After seeing the set-up of "Hinkler banjo lathe" on youtube I'm sure his set-up would make my life simpler. Take a look!


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 Post subject: Re: XY table
PostPosted: Tue Jul 04, 2017 6:53 am 
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Now I know the application I can't help wondering if a lazy Susan table and a router mounted on a lockable pivoting arm couldn't achieve the same results. TBH it's also the ideal problem to throw at a pin router. Never happy about machined threads, oil and wood dust/resins in combination due to the tendency for the threads to clog and seize in short order

There are cheap x-y tables available for many mill-drill type machines these days but the problem is that you'd need to engineer some form of tool holder which may require the input of an engineer. Get into that and a cheapish metalworking lathe with a powered carriage may start to look quite attractive

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 Post subject: Re: XY table
PostPosted: Tue Jul 04, 2017 1:26 pm 
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Job and Knock wrote:
Now I know the application I can't help wondering if a lazy Susan table and a router mounted on a lockable pivoting arm couldn't achieve the same results. TBH it's also the ideal problem to throw at a pin router. Never happy about machined threads, oil and wood dust/resins in combination due to the tendency for the threads to clog and seize in short order

There are cheap x-y tables available for many mill-drill type machines these days but the problem is that you'd need to engineer some form of tool holder which may require the input of an engineer. Get into that and a cheapish metalworking lathe with a powered carriage may start to look quite attractive


I think you're right J & K, I'd probably go for some sort of router set up to do this. I'd also probably make something "stand alone" to do it as it is only one job which (I assume) isn't done multiple times a day.
Also possible to make something to use a disc sander to remove the waste? Just a thought

To the OP. Unless you have other work for it an engineering lathe is quite an investment. Again as said they don't "like" wood dust. Wood dust is considered "dirty" as far as engineering machinery goes.
FWIW most of my jigs and so on are made from decent quality ply with metal where needed. The're often much "nicer" if they are engineered in metal, but that represents a lot of time and /or money and it's not needed for many of the things that are done in a one man workshop.


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 Post subject: Re: XY table
PostPosted: Tue Jul 04, 2017 2:02 pm 
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I think I must have explained myself poorly.
As in the youtube video I mentioned, I will be using the motor and headstock of my woodworking lathe with 6" plate to attach my work.
That and the xy table would be securely mounted onto a bed with axis of the xy table parallel to the axis of the motor, with spacers to lift up the base of the xy table, so that the tool would centre on my work.
Similar to metalworking on a lathe, banjos have very fine tolerances and I think to make repeat copies regularly (once a fortnight) a set-up like this
would make my life a little easier especially when it comes to turning the crazy hard timbers I need to turn on the front face of the banjo rim.
I'm prepared to be scrupulous about the cleanliness of threads etc in the xy table. Apart from that, I need to try it for my own satisfaction.
If it all ends in tears, then I guess you'll all have the right to say"I told you so"
Anyway nothing is happening till I find a good quality cast iron xy table. Are there no engineers with a surplus xy table close to Cheshire?
HELP!
By the way J&K, I already tried the lazy susan and pillar drill with sanding drum. It worked but created massive amounts of dust and took for ever. Hence my purchase of the woodworking lathe.


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 Post subject: Re: XY table
PostPosted: Tue Jul 04, 2017 2:16 pm 
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You've explained yourself OK.
You want a lathe compound slide. They're usually pricey.
Something like this
http://www.ebay.co.uk/itm/5-CROSS-SLIDING-DRILL-PRESS-VISE-SLIDE-VICE-HEAVY-DUTY-MACHINE-SHOP-TOOLS-/311688444441?hash=item4892143a19:g:yhAAAOSwOdpXx-5~
might do it. Depends how well the slides fit. (They look to be adjustable)
You'd either have to rig a tool post or you might get away with clamping a tool in the vice.


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 Post subject: Re: XY table
PostPosted: Tue Jul 04, 2017 3:40 pm 
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Cheers Dave.


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