Taper Turning attachment

This topic has 8 replies, 5 voices, and was last updated 3 September 2015 at 18:02 by Neil Wyatt.

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3 September 2015 at 09:41 #203015
Elick
Participant
@elick
Hi all, newbie here so please forgive me if this should be in the tooling section or something.

Picked up my Super 7B last weekend and have been installing/checking it over etc and have just found out that the odd looking slidey type thing that I had not seen on any super 7 photos that I have looked at is a 1429 taper attachment, which is a surprise bonus as seller never mentioned it.

Now, I have the connecting arm including T bolt in a box of bits I received but I seem to be missing the clamping part. After looking on myford site it seems there should be a pivot post, a socket and clamp lever at least.

It looks fairly simple to rig something up (a stud, spacer and spare tool post lever maybe), but if someone has these parts and could perhaps take a pic or 2 of them it would be appreciated.

Complete beginner here so have no idea when I'll get round to actually using this, so just adding it to my to do list of items that need sorting out, so any help is welcome. Thanks in advance

Russ

Edited By Elick on 03/09/2015 09:42:31
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3 September 2015 at 09:41 #7783
Elick
Participant
@elick
3 September 2015 at 10:20 #203020
Neil Wyatt
Moderator
@neilwyatt
The next issue of MEW (233) will see the start of a short series on rebuilding one of these attachments including remaking most of the parts as only the main casting was available.

Neil
3 September 2015 at 11:05 #203026
Brian Wood
Participant
@brianwood45127
Hello Elick

Welcome aboard.

The most important thing to remember when you do get round to using the attachment is to be sure to disconnect the X slide feed screw nut so that motion of the X slide is by the taper turning attachment alone.

Forget to do this leaving the X slide in effect locked by the feed screw will result in an expensive and damaging bang.

Take a look under the carrier for the handle and you will see the feed screw going into a grey oval shaped piece held in position with slot headed screws on either side. Undo those to free it off and if you can then wind the feed screw anti clockwise for the 'nut' to walk out of it's socket towards the handle. Wind it well clear up to the end of the thread and test the action of the X slide by pushing it back and forth by hand, It should be free to slide easily on it's guides

Reverse all that and re-attach the feed screw for normal use of the lathe. The slot headed screws are fiddly to put back into position, leave a clean rag in the swarf tray below so that you can find them again when you drop them!

It might pay you to store the coupling piece from the taper attachment to the X slide link in a box painted red with a reminder lable on the lid.

Regards

Brian
3 September 2015 at 13:31 #203047
Elick
Participant
@elick
Thanks for the welcome and the advice. I was sort of puzzled how it worked, even after see a picture of it rigged up, it was only when I saw the instruction to disconnect the feed screw that it made sense.

Definitely a case of having to read the manual instead of jumping in feet first.

Very nice of MEW to write an article just for me, do they do that for all new members on here
3 September 2015 at 14:47 #203058
Brian Wood
Participant
@brianwood45127
Hello Elick,

Yes, very accomodating indeed, you can see why Neil was taken on as Editor with his clairvoyant powers!!

Brian
3 September 2015 at 15:29 #203063
Ajohnw
Participant
@ajohnw51620
What about a new design of the DIY one Neil that is based around a sine bar arrangement. I have one for a Myford 7 but can't bring myself to drill holes in the back of my Boxford bed but there are lathes around that do have bolt holes.

John

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3 September 2015 at 16:26 #203068
KWIL
Participant
@kwil
Hello Elick,

I do not know whether your Super 7 has power cross feed or not. If it does not, then Brian Wood's advice is good, however if the lathe is a power cross feed version, it is easier and quicker to merely remove the screws from the Bracket which carries the cross feed leadscrew/handle and swing the bracket into an inverted position. The cross slide is then free to move driven by the taper device.

K
3 September 2015 at 18:02 #203070
Neil Wyatt
Moderator
@neilwyatt
I should add that Alan Hearsum's write up includes drawings that should include all the parts you are missing.

What would you like next?

Neil
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