MadModder

The Shop => Tools => Topic started by: Pete W. on March 22, 2013, 06:34:18 AM

Title: Beeston Myford Rear Tool-Post (Dickson QCTP Style) Model 30/145.
Post by: Pete W. on March 22, 2013, 06:34:18 AM

Hi there, all,

Please has anyone got one of these?

(http://i1342.photobucket.com/albums/o770/Pete_W73/30-145001_zps97886257.jpg)  (http://i1342.photobucket.com/albums/o770/Pete_W73/30-145002_zpse2df347d.jpg)

The version I'm interested in is the 30/145 for the ML7 & S7, not to be confused with the one for the ML10 (30/148), the 254+ (30/149) or for the 254S/R (30/151).

If you do have one, please could you measure the distance from the upper surface of the cross-slide to the underside of the Dickson mounting block? 

(And post it in your reply!!)   :doh:

Sorry about the poor picture quality - scanned from the fifth generation photocopy of the sixth carbon!!

Thanks.

Title: Re: Beeston Myford Rear Tool-Post (Dickson QCTP Style) Model 30/145.
Post by: lordedmond on March 22, 2013, 01:13:32 PM

Pete


1.688 inches

Yes mine is a local Myford one as I live not 5 miles from the proper Myford Works


Stuart

Title: Re: Beeston Myford Rear Tool-Post (Dickson QCTP Style) Model 30/145.
Post by: Pete W. on March 22, 2013, 01:37:31 PM

Stuart,

Thank you - you're a star!!    :nrocks:   :nrocks:   :nrocks:   :nrocks:

I took my pix from a Beeston Myford leaflet that says there were several options for tool-holder - which do you have and do you find the tool-post a useful asset?

I made an impulse buy, a model 30/149 for the 254+ and I want to make an additional base for it to make it compatible with my ML7.

Thanks again.   :D   :D   :D   :D   :D   :D   :D
 

Title: Re: Beeston Myford Rear Tool-Post (Dickson QCTP Style) Model 30/145.
Post by: lordedmond on March 22, 2013, 02:19:41 PM

yes its very useful

I use an iscar parting blade for steel  along with the other two holders  one with zero rake and a 1/16 parting blade for brass the other one for ali


Stuart

Title: Re: Beeston Myford Rear Tool-Post (Dickson QCTP Style) Model 30/145.
Post by: krv3000 on March 26, 2013, 06:17:14 PM

handy bit of kit

Title: Re: Beeston Myford Rear Tool-Post (Dickson QCTP Style) Model 30/145.
Post by: Pete W. on February 18, 2015, 12:52:19 PM

Hi there, all,

 :update:   :update:   :update:   :update:   :update:   :update: 

I started this post (quite a long time ago!!) because I had bought a Beeston Myford Dickson-Pattern rear tool-post, part number 30/149.  That version is for the Myford 254 lathe which is considerably larger than my ML7.

As bought, the tool-post looked like this:

(http://i1342.photobucket.com/albums/o770/Pete_W73/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00007_zpsbcec6e18.jpg) (http://s1342.photobucket.com/user/Pete_W73/media/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00007_zpsbcec6e18.jpg.html)

Obviously, to use this tool-post on the ML7, its height would have to be reduced.  Thanks to Stuart, I knew that the lower block for the corresponding ML7 item, part number 30/145, is 1.688 inches or 42.88 mm.

I didn't want to modify the lower block from the 30/149 so I cast about (pun intended) for a suitable piece of cast iron from which to machine a 30/145 lower block clone.
With this intention, I purchased a length of cast iron bar from College Engineering.  They advise, quite reasonably, to allow for the material being as much as 5 mm under nominal size. 

The finished size of my block would be that 42.88 mm high, plus a bit for the locating tongues that fit in the cross-slide Tee-slots, by 78 mm long and 48 mm wide. So, having allowed what seemed enough machining allowance, I placed my order.  What arrived looked like this:

(http://i1342.photobucket.com/albums/o770/Pete_W73/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00009_zpsec04f6ba.jpg) (http://s1342.photobucket.com/user/Pete_W73/media/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00009_zpsec04f6ba.jpg.html)

It transpired that my piece of material was actually a bit OVER nominal size, it measures 61 mm by 61 mm by 90 mm (I did up the length ordered by 10 mm).

That was going to need a lot of cast iron converting to swarf, taking a lot of time and making a lot of mess!   :doh:   :doh:   :doh: 

So I thought long and hard, trying to think of a good approach.  I could have fitted the block into the four-jaw chuck and machined it to size - NO, too much swarf and too much time!   :bang:   :bang:   :bang: 

I could hack-saw off most of the excess material, just leaving a mm or so to machine off - NO, too much physical exertion for an 'oldie' like me and I couldn't guarantee the required accuracy of cut!   :bang:   :bang:   :bang: 

I enquired of the makers whether the Rage Evolution saw would cut cast iron and was told that it would not!   :bang:   :bang:   :bang: 

I wondered whether anyone I knew had a metal cutting band-saw or a donkey saw and might make it available to me - I didn't know anyone!   :bang:   :bang:   :bang: 

So, I got on with other jobs and this one receded even further back than the back burner!!    :scratch:   :scratch:   :scratch:   :scratch:   :scratch:   :scratch:

And there it stayed until ten days ago!   

Title: Re: Beeston Myford Rear Tool-Post (Dickson QCTP Style) Model 30/145.
Post by: Pete W. on February 18, 2015, 01:06:38 PM

Hi there, all, again,

Well, to cut a long story short (not something I do very often!) I spotted an item on eBay that looked suspiciously like the lower block of a 30/145.  I put a bid on it and spent the next week on tenterhooks. 
But, imagine my delight when the auction ended and mine was the only bid!    :D   :D   :D   :D   :D   :D 

The seller got the item into the Post very promptly and I received the item the following day.  It looks like this:

(http://i1342.photobucket.com/albums/o770/Pete_W73/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00001_zps48fcf7f8.jpg) (http://s1342.photobucket.com/user/Pete_W73/media/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00001_zps48fcf7f8.jpg.html)

or like this:

(http://i1342.photobucket.com/albums/o770/Pete_W73/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00002_zps502325ea.jpg) (http://s1342.photobucket.com/user/Pete_W73/media/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00002_zps502325ea.jpg.html)

and, married up to the upper block, like this:

(http://i1342.photobucket.com/albums/o770/Pete_W73/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00003_zps674f6c11.jpg) (http://s1342.photobucket.com/user/Pete_W73/media/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00003_zps674f6c11.jpg.html)

Here is a comparison of the two lower blocks:

(http://i1342.photobucket.com/albums/o770/Pete_W73/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00008_zps0d4f01f5.jpg) (http://s1342.photobucket.com/user/Pete_W73/media/Pete%20W73s%20Photos/QCTP%20Tool-Posts/Image00008_zps0d4f01f5.jpg.html)

I shall need to make a securing bolt of suitable length but otherwise I have a result!!   :ddb:   :ddb:   :ddb:   :ddb:   :ddb:   :ddb: 

Share my joy!!   :D   :)   :D   :)   :D   :) 

(Oh, by the way, when I bought the 30/149 it was a complete kit, with a parting blade and mounting bolts & nuts.) 

Title: Re: Beeston Myford Rear Tool-Post (Dickson QCTP Style) Model 30/145.
Post by: dawesy on February 18, 2015, 03:35:44 PM

Excellent result. It's nice when things just work :)
And you now have a lump of cast for another project :)