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View Full Version : Spiral turning tool on ebay.........



Your Old Dog
01-04-2007, 02:25 PM
Here's a weird one on eBay.

Wasn't someone hear inquireing about spiral turning on the lathe?

http://images.google.com/imgres?imgurl=http://img.photobucket.com/albums/v500/twomarbles/far-away-star/aw2k/LotImg9557.jpg&imgrefurl=http://cgi.ebay.com/Deckel-Spiral-Milling-Attachment-Tail-Stock_W0QQitemZ110021715391QQihZ001QQcategoryZ633Q QcmdZViewItem&h=468&w=600&sz=37&hl=en&start=12&tbnid=OwGXR51ZPBYOCM:&tbnh=105&tbnw=135&prev=/images%3Fq%3Dmilling%2Battachment%26svnum%3D10%26h l%3Den%26lr%3D

thistle
01-04-2007, 04:23 PM
I am sure all the Deckelites will be green with envy

Spin Doctor
01-04-2007, 04:28 PM
It's all in the timing. A fixed relationship set-up between the work head and the table feed. I've done helical stuff on CNC machines but never on a manual one (with the exception of hobbing helical gers). It actualy used to be pretty common to see power take-off boxes at the end of milling machines for running dividing heads. Even saw it on This Old House one time were a guy was making new porch rail spindles on a Bridgeport for a project back in the Bob Vila days. This being for a Deckel should be top notch stuff. It's even a nice shade of green to match the envious state of my demeanor.

PS Sears used to sell a gizmo for doing this with a router

DR
01-04-2007, 04:34 PM
Kind of surprising it went so low.

John Stevenson
01-04-2007, 04:58 PM
It's all in the timing.

PS Sears used to sell a gizmo for doing this with a router

We used to do spiral flutes on a wood lathe by running a router along two angle irons mounted above the work.
The router was controlled by a big plywood disk and a length of bowden cable [ wire rope ]
The trick was to get the circumference to equal the distance needed to be travelled if you wanted a full twist.
You slowly turned the big plywood disk attached to the spindle and it dragged the router along cutting the spiral flute as the spindle rotated.
There was another cable on the back of the router going to a big weight to keep tension.

Not a new idea I think it's been around since the 1800's althought not with routers :D
Actually called Barley twist and if you use two cutters, you can cut the centre out which is called Open Bine.

http://www.empire-antiques.co.uk/images/large/002501a.jpg

.

old-biker-uk
01-04-2007, 05:31 PM
I do mine with a sharp knife !
http://myweb.tiscali.co.uk/remark/pages/Temp/images/bobbins.jpg

Seriously though I wish I could fit something like that on my old Fritz Werner, alternatively a Pittler B3 with overhead gear (I only have a small workshop).
Mark

Alistair Hosie
01-04-2007, 05:38 PM
What Fritz Werner do you have ?Alistair

old-biker-uk
01-04-2007, 05:55 PM
Alistair - It has a plate marked '5-160WS' which I guess is the model. Originally supplied by Stockwell, London.
http://myweb.tiscali.co.uk/remark/pages/workshop/images/werner.jpg
Good job I tidied up before taking the picture !
Mark

Alistair Hosie
01-04-2007, 06:10 PM
You dont have a manual for it do you I have the same mill but no manual or at least a bad copy of one very dark?Alistair ps how do you find it in use and yours seems to be missing the four handled table return works by squeezing them together I would pay for a copy if you have oneAlistair

[IMG]http://img.photobucket.com

Alistair Hosie
01-04-2007, 06:14 PM
sorry here is mine


http://img.photobucket.com/albums/0903/tybachdai/Fritz%20Werner%20Milling%20machine/d19fcbbe.jpg

HTRN
01-04-2007, 06:59 PM
Alastair you big fibber! That machine is clearly grey.:D


HTRN

Alistair Hosie
01-04-2007, 07:33 PM
I know it is but wait Evan will change it to green with his magic wand to baffle the living.Actually I was lucky I bought this machine with the aid of Ragarsed raglan who checked it out for me the previous owner was an ex cincinnati engineer and he had just completely rebuilt it with all new bearings installed this is aactually one of his sales pictures dont worry it's still grey :DAlistair

Alistair Hosie
01-05-2007, 11:51 AM
are you there ???Alistair

old-biker-uk
01-05-2007, 04:04 PM
Alistair - No manual I'm afraid, could do with one myself, can't even figure out how to adjust the quill bearings !
If I ever come across one you will be the first to know.
Mark

Alistair Hosie
01-05-2007, 04:17 PM
Mark I will try to look out the tel number of the seller of mine if your interested he will be able to advise you would you like me to do that ?Alistair