Myford MG9 grinder

Advert

New Replies

Report Bug

Help/FAQs

Myford MG9 grinder

This topic has 32 replies, 9 voices, and was last updated 26 June 2020 at 17:57 by Pete Rimmer.

Viewing 25 posts - 1 through 25 (of 33 total)

1 2 →

Author

Posts
23 May 2020 at 18:05 #13906
Pete Rimmer
Participant
@peterimmer30576
Advert

23 May 2020 at 18:05 #474288
Pete Rimmer
Participant
@peterimmer30576
Does anyone here own one of these little grinders?

I've been lucky to get hold one, collecting it tomorrow. The seller has no literature for it and couldn't find any when he tried. I'm surprised at how little info of any kind there is about for this machine given the abundance of it for the lathes etc.

If anyone has or had one of these and has any literature I'd pay a token fee for a scan of it. Equally any current owners feel free to chip in with any tips for operation etc I'd be happy to hear from them.

I'll post pics of it when I have it home and assembled of course, it's easy to find on the homeworkshop site in the meantime.

Thanks

Pete.
23 May 2020 at 19:24 #474306
Anonymous
I've got an early MG12 and a manual for it. But I suspect that's not much help as the designs seem quite different, certainly in the detail. The arrangement of the internal grinder is similar though.

Andrew
23 May 2020 at 19:42 #474310
Pete Rimmer
Participant
@peterimmer30576
Andrew,

Does your manual contain general setup, maintenance and lubrication info? If it does then at least it'll give me some pointers.

Pete.
23 May 2020 at 22:11 #474364
Chris Evans 6
Participant
@chrisevans6
I have used a mate's Myford grinder a few times. I will ask him what model it is and if he has any info for you. May be a delay with the copying if he has info due to the covid 19
23 May 2020 at 22:14 #474366
Pete Rimmer
Participant
@peterimmer30576
Posted by Chris Evans 6 on 23/05/2020 22:11:55:

I have used a mate's Myford grinder a few times. I will ask him what model it is and if he has any info for you. May be a delay with the copying if he has info due to the covid 19

Thanks Chris, I appreciate that.
23 May 2020 at 23:57 #474385
Mark Rand
Participant
@markrand96270
I wondered who got it. Spent half an hour lookking at the pictures and thinking about it, but sanity (and a lack of space) prevailed.
24 May 2020 at 05:10 #474395
Pete Rimmer
Participant
@peterimmer30576
Posted by Mark Rand on 23/05/2020 23:57:55:

I wondered who got it. Spent half an hour lookking at the pictures and thinking about it, but sanity (and a lack of space) prevailed.

Yeah I got it…..

…in the ear off the missus when I told her 😀
24 May 2020 at 10:58 #474460
Anonymous
Posted by Pete Rimmer on 23/05/2020 19:42:38:

Does your manual contain general setup, maintenance and lubrication info?

Some, but as you'd expect from a 1960s manual it's all rather vague. I've also got a sheet from the original Myford company listing oil types and application. My machine has oil reservoirs rather than the sight glasses on the MG9. My internal spindle is greased for life, so there are no lubrication points.

Andrew
24 May 2020 at 11:08 #474465
Pete Rimmer
Participant
@peterimmer30576
Ok, well thank you for taking time to look. I have the machine home now, time to evaluate it and work my way through any jobs. The top is stripped off now which has exposed a lot of flaking paint in the tray beneath. I'll have to paint it which I wasn't expecting, but it will only add to the overall finish.

Mechanically, it appears very good.

Pete.
25 May 2020 at 06:13 #474677
Pete Rimmer
Participant
@peterimmer30576
Posted by Andrew Johnston on 24/05/2020 10:58:10:

Posted by Pete Rimmer on 23/05/2020 19:42:38:

Does your manual contain general setup, maintenance and lubrication info?

Some, but as you'd expect from a 1960s manual it's all rather vague. I've also got a sheet from the original Myford company listing oil types and application. My machine has oil reservoirs rather than the sight glasses on the MG9. My internal spindle is greased for life, so there are no lubrication points.

Andrew

Andrew how are your grinder ways lubricated? Mine has grease nipples which naturally someone has pumped full of grease instead of way oil, hence the advert stating that the motions were a bit stiff.

It would be nice to find a lubrication chart. If not i'll be going for ISO60 way oil and BL10 for the spindle drip oilers.
25 May 2020 at 09:30 #474721
John P
Participant
@johnp77052
Interesting video here on a restored Myford MG 12 also has the
video listings of the restoration process .
Not an MG 9 but interesting all the same.

John
25 May 2020 at 11:23 #474765
Anonymous
Posted by Pete Rimmer on 25/05/2020 06:13:35:

Andrew how are your grinder ways lubricated?

Oil nipples:

The nipples are colour coded, although I'm not sure if that relates to the oil type or simply the size of the nipple. If you PM me an email address I can scan the relevant pages in the manual and the sheet I have from Myford listing lubricants for their machine tools. There are some inconsistencies between the manual and sheet. I bought ISO15, ISO32 and ISO68 slideway oils from Myford when I first got my grinder.

Andrew
26 May 2020 at 18:30 #475160
Pete Rimmer
Participant
@peterimmer30576
My thanks to Andrew for sending me some lubrication info. He is correct in saying that the machines are actually quite different as regards lubrication and it's clear that the MG12 is a more advanced machine but it at least gives me some pointers.

Anyway, here are some pics for anyone who is interested.:

Advert pic:

The seller remove the top from the base for me to load it and that exposed some hidden flaking paint. So right away the cabinet was sanded, primed and painted.

Before:

After paint:

I also gave the main casting a damn good clean with jizer and a jetwash

Whilst that was drying I set to making a tool for adjusting the gibs. Someone had tried to adjust them without a proper way to turn the locknuts and made a mess of the screw slots, This tool will help me to adjust them properly.

A nice snug fit.

Looking forward to getting this machine rebuilt so I can use it. I have a number of jobs that will be so much nicer with a ground finish.
26 May 2020 at 20:03 #475175
Pete.
Participant
@pete-2
Lucky boy, that looks like a fantastic little machine.
26 May 2020 at 22:22 #475205
Anonymous
Good grief, that's excellent work, and fast too. I'm now embarrassed to have posted pictures of my MG12 with its tatty paint.

Andrew

Edited By Andrew Johnston on 26/05/2020 22:23:14
27 May 2020 at 00:16 #475225
Pete Rimmer
Participant
@peterimmer30576
Thank you both. No shame in showing pics of a well used machine Andrew – I'd rather see a machine put to good use than a show queen.

By the way I have four unused holes in the rear of my base casting and something missing that should be on the rear of my wheelhead slide. Looking at your album pics I see a counterweight on your machine. I don't have that, I wonder if the MG 9 came without one or if it's missing?
27 May 2020 at 09:39 #475268
John P
Participant
@johnp77052
Hi Pete

Looks like this machine has been quite well looked after ,so many of
these sort of machines have been badly abused ,the last place i worked
had a Myford MG 12 that had been poorly looked after at some time in its life.
The main problem was the head and tail stock had been dragged along the
table before it had been cleaned damaging the surface ,hope yours is not like this,
the result is the machine needed paralleling up every time either was moved.

Hope you will post some more photo's as the machine gets up and running.

Some useful videos to watch
Jeffery Badger The grinding Doc
and
Suburban tools grinding videos

John
27 May 2020 at 10:13 #475279
thaiguzzi
Participant
@thaiguzzi
Geez Pete, you don't hang about!

Well done.
27 May 2020 at 14:02 #475336
Anonymous
Posted by Pete Rimmer on 27/05/2020 00:16:08:

Looking at your album pics I see a counterweight on your machine. I don't have that, I wonder if the MG 9 came without one or if it's missing?

The tension weight is a hefty lump of steel, well over 100lbs. I think there's a chain up to the wheelhead slide and a folded steel cover attached to the back of the cabinet. Since the operating thread is fine pitch you don't really notice the thunking great weight when operating. If it helps I can take a better picture.

Andrew
27 May 2020 at 19:37 #475419
Pete Rimmer
Participant
@peterimmer30576
Posted by Andrew Johnston on 27/05/2020 14:02:03:

The tension weight is a hefty lump of steel, well over 100lbs. I think there's a chain up to the wheelhead slide and a folded steel cover attached to the back of the cabinet. Since the operating thread is fine pitch you don't really notice the thunking great weight when operating. If it helps I can take a better picture.

Andrew

That would be nice if you could but no rush. I have a good bit to do before I'm ready to grind anything.

Painted the base casting and covers today. I hate painting and I'm not much good at it so I was satisfied with just a couple of runs

That's not my garden fence by the way – it's a knackered old panel I stood up for something handy to hang the bits off.
27 May 2020 at 23:26 #475469
Mark Rand
Participant
@markrand96270
Are you intending to re-align/re-scrape the ways after the painting?
28 May 2020 at 00:03 #475474
Pete Rimmer
Participant
@peterimmer30576
Posted by Mark Rand on 27/05/2020 23:26:29:

Are you intending to re-align/re-scrape the ways after the painting?

Yes for sure. It has some wear but not too much and the long ways are worn the same all over so the geometry should be preserved. I do have to find a long enough dovetail straight edge to borrow though. Also I am going to have to figure out how to support the table for scraping. The profile is too long and thin to stop it from bending under it's own weight. Perhaps I will lay it on top of a large surface plate and let it over-hang 6" either side, or I might just send it for grinding, not sure yet.
28 May 2020 at 10:34 #475538
10ba12ba
Participant
@10ba12ba
A nice machine Peter, I hope the refurbishment goes well.

What projects have you got for it?

H
28 May 2020 at 18:26 #475710
Pete Rimmer
Participant
@peterimmer30576
Posted by 10ba12ba on 28/05/2020 10:34:41:

A nice machine Peter, I hope the refurbishment goes well.

What projects have you got for it?

H

Thank you, I'm sure it will.

I have several immediate jobs for it. I have to make some hardened arbors for my gear hobbing machine. Hobbing demands that you hold the part and the hob very accurately.

Pete.
Author

Posts