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How not to repair an X1 Milling Machine

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KWIL31/10/2012 11:30:41
3564 forum posts
70 photos


It all boils down to, you know what you are doing and can, they did not have a clue and did not know it!


Edited By KWIL on 31/10/2012 11:31:21

Stub Mandrel02/11/2012 21:43:15
4315 forum posts
291 photos
1 articles

Hi Gray,

Why not convert to belt drive?


Michael Cox 103/11/2012 11:45:55
551 forum posts
27 photos

Hi Gray,

I have done a belt drive mod and a power feed on my X1, see


I am sure you will make much better mods than I did but it is always good to see how others achieve a result.

Kind regards


Pat Bravery03/11/2012 11:52:21
96 forum posts
24 photos

Hi, Your X1 is the same as my Clarke CMD10 and the gears also failed on mine. When I looked at it I found that the 4mm key was too short and only engaged about half of the keyway slot this caused undue strain in driving the gear and stripped the keyway. I replaced the gears from Arc and fitted a longer 4mm key and it has been fine since.

Gray6210/04/2013 14:47:24
1058 forum posts
16 photos


As always an over engineered but perfectly excecuted set of modifications.

Over engineering as you is never a bad thing as you rarely need to revisit.

The quality of your work never ceases to impress me. Looking forward to seeing how you approach the belt drive mod.

I have an X2 clone (of mitsubishi origin) which shed its plastic change gears at the first sign of a light cut.

I did a quick and VERY dirty belt drive mod to get it up and running, then progressed very quickly to an Ajax AJT4 so the x2 sits lonely in the corner of the workshop and is rarely if ever used. One day it will get a cnc conversion and a rebuilt belt drive (once I find a suitable bucket of inspiration)

These little machines are ok as they go but benefit from a little TLC


Tony Pratt 110/04/2013 17:17:50
2035 forum posts
12 photos

Graeme, 'over engineered' how so?


Gray6210/04/2013 18:21:44
1058 forum posts
16 photos


This was not meant as any form of criticism, merely an observation of Grays excellent perception of engineering and making things to last.


Stub Mandrel10/04/2013 19:59:20
4315 forum posts
291 photos
1 articles

Another very lovely job; there is a real aesthetic sense there, a lttle more than form follows function.

I was not overly keen to use the machine due to having to do mental arithmetic just to convert the numbers on the existing dial to read Millimetres, (2mm pitch feedscrew and dial graduated 0 to 80).

My X2 has 1.5mm pitch leadscrews with dials graduated 0 to 75. i plan to replace them with 0-60 so I don't have to do mental maths either

Funny old world!


Ady111/04/2013 00:43:07
5180 forum posts
738 photos

Hi Gray,

Why not convert to belt drive?


Now there's a challenge... not really a challenge... a mission

Make it easier for future muppets


he-he...looks like you're not as obsolete as you hoped...


live long and prosper buddy





btw I have yet another metric threads on an imperial lathes system to throw out there

its based upon the interruptor gear used in ww1 machine guns which fired through propellors

(was reading about it on wiki and thought...uhh... hang on a minit...)


miles simpler than my digital system


been drinking tonite...


damn.. being alive is so... WONDERFUL


Edited By Ady1 on 11/04/2013 01:15:01

Ady111/04/2013 01:54:38
5180 forum posts
738 photos

Heck, lets get it out there girls, before someone claims it as their own

What revolves constantly, like a propellor, with one way in and out?

A leadscrew clutch

da-da-da-da-da da-da-da

(or duh-duh-duh-duh-duh... lol)

What revolves non-constantly in time with the leadscrew clutch?

The headstock !!!

So if you have a locking leadscrew AND a headstock collar CONNECTED to that leadscrew pull-in-bar it stands to reason that there's only one position you can pull that leadscrew into position

The correct position

A double interruptor gear


simples !

Ady111/04/2013 02:07:27
5180 forum posts
738 photos

Your search - "double interruptor gear" - did not match any documents.

It's a bit disconcerting

Interruptor gear was about 100 years ago and 100 years later double interruptor gear still does not exist ?

Maths has advanced hugely in 100 years, producing unlimited interruptor gearing

Ady111/04/2013 02:27:52
5180 forum posts
738 photos

It's got sod -all to do with "me"

We invented the industrial revolution

we invented the jet engine and patented it... and didn't have 30 quid to maintain the patent...

we invent a wooden aeroplane like the mosquito and Goering watches them buzz all over occupied Europe's definitely a Brit thing

Steamer191511/04/2013 08:15:08
168 forum posts
42 photos

Head a bit sore this morning is it? embarrassed


Edited By Steamer1915 on 11/04/2013 08:29:15

Stub Mandrel11/04/2013 11:27:29
4315 forum posts
291 photos
1 articles

Hi Gray,

It's definitely 1.5mm pitch on the X2. The dials have 75 graduations at 0.02mm - and they must be right as my gears come out with the correct depth teeth!

Remember the mini-lathes have fine-pitch leadscrews as well, 1/16" on the imperial ones. Xan you confirm if the metric ones are 2mm or 1.5mm - from memeory I think it's the former.

I hope Ady can find the paracetamol this morning...


Ian P11/04/2013 12:56:16
2595 forum posts
114 photos

I have a Clarke CMD10 and I am sure that it has 1.5mm pitch leadscrews (definitely so on the Z anyway)

Its not accessible at the moment but it has a silly number of graduations on the dials but with DRO fitted its irrelevant.

Ian P

Thor 🇳🇴01/04/2014 16:53:29
1661 forum posts
46 photos

Hi Gray,

that's a neat power feed. I assume there's a worm gear inside the aluminium housing? And a way to disconnect if you want manual feed?


Michael Cox 101/04/2014 18:22:17
551 forum posts
27 photos

Hi Graham,

I really like your power feed but what attracted my eye was that beautiful little vice mounted on the table. Is that a commercial item or something you have built yourself? If the latter do you have ant drawings?


Russell Eberhardt01/04/2014 20:20:16
2752 forum posts
86 photos


That power feed looks neat. Any chance of a look inside?


Martin Cottrell01/04/2014 21:19:36
297 forum posts
18 photos
Posted by Graham Meek on 01/04/2014 19:05:28:

Hi Michael,

The vice is something that I designed specifically for this mill, the base was made from a piece of Cast Iron continually cast section, the moving jaw is Mild steel as is the vice screw bearing bracket. The Jaws are Ground Flat stock, or Gauge Plate, and the Vice Screw is made from EN 8 with a 2 mm pitch Trapezoidal thread.

Un-like a convention vice this design is such that it pulls the work down into the vice, it also ensures that there is more contact between the milling machine cross-slide slideways, (less overhang), for the majority of work.

There are some drawings but currently they need tidying up to get them up to date, when I originally designed the vice I had intended to write an article on the build but now I am not so sure.


Hi Gray,

I'm sure a construction article on your vice would be well appreciated by many readers. I for one could learn a great deal from the techniques you've used to get such a nice finish on the parts even if I didn't have an immediate need to build the vice. Likewise your power feed would be of interest to many mill owners, myself included!

Regards, Martin.

Mike Clarke02/04/2014 10:37:00
94 forum posts
7 photos
Posted by Michael Cox 1 on 01/04/2014 18:22:17:

Hi Graham,

I really like your power feed but what attracted my eye was that beautiful little vice mounted on the table. Is that a commercial item or something you have built yourself? If the latter do you have ant drawings?


Hi - it, and the other items, sure are beautifully made.

If you want something similar that's commercially available, then you may be interested in the 60mm machine vice available from Pro Machine Tools (I bought one for my Emco mill several years ago and was always very pleased with it). It is very similar in design to Gray's.



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