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ML7 Top slide sole plate info

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Ken Weeks15/07/2017 21:10:28
122 forum posts
36 photos

I have come across reference to a "Top Slide sole plate" for the ML7 by Ian Bradley.

I want to fit a different tool holder to my Super 7 that is to tall to fit to the top slide, and this would I think solve the problem.

Is there a drawing or M.E/M.E.W. article describing this item?

Robbo15/07/2017 21:42:57
1431 forum posts
124 photos


The only "top slide sole plate" reference by Bradley that I know of is in his ML7 lathe manual, and it is simply a raising plate to lift the complete top slide together with it's base.

As you know, normally the rotation of the topslide is limited in each direction, the sole plate enables it to rotate completely, without the topslide handle hitting the cross-slide fittings.

Don't think it will help you, as it makes the topslide higher.

Robbo15/07/2017 21:52:47
1431 forum posts
124 photos

-boxforduniversal base - 1.jpgKen, what would probably help you is a bas e like the Boxford Universal Base, which has a taper spigot ( like the Super 7 topslide base) on one side, and the usual Boxford fixing slot on the other. See pics

-boxforduniversal base - 1.jpg

-boxford universal base - 2.jpg

Ken Weeks15/07/2017 22:12:08
122 forum posts
36 photos

Hi Robbo

Thanks for the reply, Yes that would be the one.

I was after information with regard to layout/dimensions etc to see what was involved in making one.

My intention is to mount the tool post direct to the sole plate/raising plate without the top slide, making the plate the correct thickness to get the centre height correct.

I do not have a ML7 top slide base to measure.


Roderick Jenkins15/07/2017 22:21:53
1568 forum posts
400 photos

Perhaps Tubal Cain's Gibralter toolpost drawing can be adapted to suite:

gibralter toolpost.jpg



Robbo16/07/2017 10:18:57
1431 forum posts
124 photos


Have sent you a PM with extract from the book.

If you want an ML7 topslide Base plate I have a couple of old ones.

Alan Jackson16/07/2017 10:45:16
131 forum posts
52 photos

Sorry its in the wrong thread


I would like to congratulate Stephen Wessel on his Modern flute making articles. It is most informative and Stephen details many clever techniques.


Edited By Alan Jackson on 16/07/2017 10:51:12

Gordon A17/07/2017 00:33:45
122 forum posts
4 photos

Hi Ken,

As I tend to use the top slide ( or compound as it was known when I was a lad) very infrequently on my ML7, I made a raising block from a chuck backplate casting.

The block is secured to the front 2 "T" slots on the cross slide which puts the toopost stud in the same position as the original. The top surface of the block is machined to be slightly lower than the equivalent height of the top slide so that the Dickson type toolholder can accommodate larger tools .

Maybe this is possible on the Super 7.


Toolpost raising block

Ken Weeks17/07/2017 09:41:51
122 forum posts
36 photos

Hi Gordon

Thanks for the suggestion and photo.

I have been trying to think of other things that could be used.

Good bit of thinking outside the box.

Robbo has a ML7 top slide base which I think will do the trick.


Robbo17/07/2017 23:49:04
1431 forum posts
124 photos


The ML7 topslide base has those curved slots which will match up with the T-slots on either ML7 or Super 7 croo-slides.

So maybe you can take off the S7 topslide complete and mount the toolpost on the ML7 topslide base and hold it with a couple of T-bolts. Might need to make a bigger spigot on the underneath to fit the bigger hole in the S7 slide for positive location.

Problem is this seems too easy, can't possibly work ! crook

I'll put a bit of T strip in for you to try.

Ken Weeks20/07/2017 15:21:13
122 forum posts
36 photos

Hi Robbo

As you suggest my intention is to remove the S7 top slide assembly complete.then fit the tool post to the ML7 base.

I have a plug for the hole in the S7 cross slide, an appropriate size hole can be bored to fit the ML7 spigot.

Thanks to you for all your help, and everybody who took the time to post.


Ken Weeks16/08/2017 15:52:23
122 forum posts
36 photos

Well they say everything comes to he who waits.

I have recently obtained the three volumes of "In the Workshop by Duplex (I love old books) .

On pages 152 to 158 of volume three chapter nine "Machining V-Pulleys" are details complete with drawing of making the sole plate.

Typical now I have solved the problem another way.

Looking at the date of the book 1949 I would think it appeared in Model Engineer about that time.


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