Myford Super 7 Lathe

[Matt Lloyd]

In case anyone missed it the Hackspace now has a Myford Super 7 metal lathe!

It arrived today thanks to David and Max.

I've spent some time tonight trying to get it all mounted on it stand but hit an issue with some odd thread sizes(damn imperial).
I have yet to do a detailed list of all the accessories and tooling but there's plenty there!!
We got a very good price considering this is the Super 7 not the older ML7

Anyway first few pics are up on flickr here
http://www.flickr.com/photos/nottinghack/sets/72157628119084531/

I've uploaded a copy of a manual i found online to the wiki here
http://wiki.nottinghack.org.uk/wiki/File:Myford_Super7_Lathe.pdf

I hope to get some documentation done on the wiki but i will mostly be concentrating on getting the lathe cleaned up and running over the next week or so.

Please be mind full of the lathe if you go looking at it, as although it is on the stand it is currently NOT bolted down!

'RepRap' Matt

[deejak]

I should have plenty of imperial hardware available. Let me know what
you need. 5/16" 3/8" and 1/2" BSW nuts and bolts, certainly.

David Clarke.

> I've spent some time tonight trying to get it all mounted on it stand but hit an issue with some odd thread sizes(damn imperial).

> Please be mind full of the lathe if you go looking at it, as although it is on the stand it is currently NOT bolted down!

> 'RepRap' Matt

[Matt Lloyd]

I think the stud is a AF 7/16 or 1/2 but it's doesn't quite match
anyways just going to remake them in metric.
Just picked up the needed bolts so will be cracking the welder out tonight.

'RepRap' Matt
Sent from my iPhone 4

[James Hayward]

What happened to "can't possibly remake them"? :)

J

sent from my HTC Desire

[Matt Lloyd]

Realised (after the pub) they were just two bolts welded back to back 

'RepRap' Matt

Sent from my iPad 2

[Matt Lloyd]

Quick update on the lathe.

Last night i welded together some new mounting studs
http://flic.kr/p/aKihmT
There not quite a pretty as the original's but they are functional, its not easy welding with out an automatic mask :(

The lathe is now all bolted down, wired up and working!!!

I have leveled it as best i can but it just with a basic spirit level, it needs checking with either a precision machinist level on the bed or usig the "Rollie's Dad's Method of Lathe Alignment " which requires a Dial test indicator with magnetic stand and some round bar.

We don't have a machinist level of dial test indicator at the space yet.

I spent the rest of the night cleaning, I'm about half way around and will be back for more tonight.

It's a great lathe, everything runs as i would expect (i'm no expert).
It seems like its been well looked after.

'RepRap' Matt

[Ric Briney]

Good work Matt! Id say a dial gauge is pretty vital, something like http://www.tooltime.co.uk/shoppingcart/products/Metric-DTI-Dial-Indicator-Test-Gauge-plus-Stand-with-Magnetic-Base.html

[Jake Howe]

That's great to hear, and thanks for keeping us updated. There is a pretty mean levelling clintometer for the iPad. As good as any other digital levelling device. No idea if that's good enough for this though!

Jake

Gmjhowe

[Matt Lloyd]

I was thinking it would be worth the hackspace investing in one like this

http://www.amazon.co.uk/dp/B0034BK64M/ref=asc_df_B0034BK64M5393057?smid=A3P5ROKL5A1OLE&tag=googlecouk06-21&linkCode=asn&creative=22206&creativeASIN=B0034BK64M

I'm not a huge Draper fan but its a nice set with both types and a case!

'RepRap' Matt

[Andy Harsley]

Looks like it's in pretty good condition from the photos.

For anyone wanting to learn the art of metal turning I recommend a
copy of "The Amateur's Lathe" by Lawrence Sparey which is about £7.50
on ebay. Quite an old book but written around the Myfords.

Good praticing materials are HE30 aluminium (6082 grade) and acetal
(Delrin). A material to avoid is any 1000 series aluminium which is
practically pure (99%+) and machines like blu-tack. Polishes nice, but
horrid to work with.

You should also invest in a bottle of Esso Nuto H32 oil which is the
recommended lubricant for these lathes. You probably won't need
cutting fluid (soluble oil), though worth having some in a squeezy
bottle just in case.

But you will need a 10" x 1/2" metal bar. Anything you put in the tail
stock tends to stick in the tapered socket, hence the bar to tap it
out again.

One other thing I find very useful is a cheap pair of +2 reading
glasses. Much better than "proper" head-mounted magnifiers.

And while I remember, does anyone have a knackered inkjet printer
laying around? If so, can they please grab the slide rail out of it.
It's a precision ground metal bar that the print head runs along.
These are very handy for re-aligning the lathe after it's been used
for taper turning. Genuine test bars are £30+ and not significantly
better.

andy

[deejak]

On Nov 25, 10:52 am, Andy Harsley <a...@rapstrap.com> wrote:
>
> For anyone wanting to learn the art of metal turning I recommend a
> copy of "The Amateur's Lathe" by Lawrence Sparey which is about £7.50
> on ebay. Quite an old book but written around the Myfords.
>

I have a copy - will donate it to the Hackspace.

David Clarke.

[Matt Lloyd]

Thanks for the info Andy

I have ordered my self a copy of "MyFord's Series 7 Lathe Manual" by Ian Bradley
Heard it was useful so will keep it in the Hackspace library

I'll have a look round eBay for some ali and delrin rod stock so we can all learn with

I've all ready ordered oil's for the lathe Esso Nuto H32 and Mobil Vactra No 2 should get them today.
Have yet to look at cutting fluid and threading fluid but there on my list of things todo.

There's no thought hole on the tail stock but it does self eject if you wind it back all the way.

Nice to know about the ground bar, we may have some from a old scanner lying around (guessing there just as precise)

'RepRap' Matt
Sent from my iPad 2

[cong...@gmail.com]

Ive got one here.

I'll try and drop it off over the weekend. (the slide rail that is, not the whole printer)

[Iain Sharp]

If you are ordering delrin please could I request something around the 20mm diameter mark which I need for a project.

Thanks

Iain

[Tony Shannon]

Fantastic job Matt, I vote we allocate the cost of a few beers at Moot
as "operational expenditure" and "lathe assembly and calibration"
costs to say thanks for your efforts

Regards
Tony

[Dominic Morrow]

Let's give Matt the beer BEFORE calibration for the lols

Sent from my iPhone

[Matt Lloyd]

Ok last nights update

Moved the big metal working bench other near the lath, along with all the welder's.
Mounted the biggest of the metal vices, to the bench, need to mount the grinder.
Think we also need to look at building some shelves for some smaller stuff under the bench.
Also want to add some board as an upstand to the back.

I have finally finished cleaning the lath, need to re oil some parts I've cleaned and oil all the other per the manual.
There are 25 points to oil, and two different types of oil!
They don't all need oiling every time but some will likely want doing before anyone starts work.
I'll document it all on the wiki once I get time and will include correct oiling procedure as part of the lathe induction.

Next up I need clean all the tooling and accessories
I don't at least get to photo all the bits and pics are on Flickr
Most of the accessories look good, including the MyFord's rear tool post in its original box!
Unfortunately the vertical slide is seized up, going to need some careful work.
http://www.flickr.com/photos/nottinghack/6404511213/in/set-72157628119084531/
T he front plate is also rusted,
http://www.flickr.com/photos/nottinghack/6404506695/in/set-72157628119084531

We have a good set of change wheels including the two 21T wheels needed for metric threads and the 12-30 tumbler cluster gear for doing .0018" feed per rev (slowest feed on the charts)
These are not standard with the new machine but are good to have (I think)

Thanks David for the wooden bed protection, was very useful when I pulled the chuck off for cleaning.

[Matt (RepRap) Lloyd]

It's been a few days since I've updated everyone on this.
The lathe is now cleaned and re oiled and ready to make some chips!
Although i need to sharpen/mount some cutters, I have a new grinding
wheel just for sharpening lath bits that will fit tonight.
I've cleaned all the accessories, the vertical slide was not as bad as
my first inspection, it's was not seized just locked off. I striped it
all the way down removed most of the ruandrogen rebuilt and oiled it.

All the chuck's were striped and had a once over with wirewool.
Please be careful with the big 4 Jaw chuck as one of the tightening
sockets is damaged, it's fine to still work with, but do not over
tighten with it. I'm not sure we can replace the part.

I had a little go at turning some aluminium on Saturday night but my
HHS tool grinding skills needs some practice and I found that we were
missing 2 of the change wheels from the standard set, these allow for
slow feed rates and hence fine finish, we now have replacements and
will add the to the collection later.

I would like to re-paint the stand that the lath is mounted on and
need to remake the tool shelves out of something other than
chipboard.

'RepRap' Matt

On Nov 26, 1:54 pm, Matt Lloyd <dps....@gmail.com> wrote:
> Ok last nights update
>
> Moved the big metal working bench other near the lath, along with all the welder's.
> Mounted the biggest of the metal vices, to the bench, need to mount the grinder.
> Think we also need to look at building some shelves for some smaller stuff under the bench.
> Also want to add some board as an upstand to the back.
>
> I have finally finished cleaning the lath, need to re oil some parts I've cleaned and oil all the other per the manual.
> There are 25 points to oil, and two different types of oil!
> They don't all need oiling every time but some will likely want doing before anyone starts work.
> I'll document it all on the wiki once I get time and will include correct oiling procedure as part of the lathe induction.
>
> Next up I need clean all the tooling and accessories
> I don't at least get to photo all the bits and pics are on Flickr
> Most of the accessories look good, including the MyFord's rear tool post in its original box!

> Unfortunately the vertical slide is seized up, going to need some careful work.http://www.flickr.com/photos/nottinghack/6404511213/in/set-7215762811...
> T he front plate is also rusted,http://www.flickr.com/photos/nottinghack/6404506695/in/set-7215762811...

[Tony Shannon]

Once again, a fantastic effort & update Matt!

Regards
Tony