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Haven’t done this for a looooong time!

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Charles Jarman26/09/2019 22:09:18
11 forum posts

hi all,

I’ve just registered here as a newbie as it’s been decades since I last done any lathe work.

my hobby interest is in aircraft, models, paragliding, that sort of thing. Well I’ve bought my self a Emco Unimat SL, as I don’t want to get too involved, size matters!

So my first question will be Unimat related, and that is where can I get spares from?

Please don’t mention EBay, I’ve scoured the whole world with them.

There are particular parts that I do need as I’m refurbishing the lathe and a few parts are missing, the main one being the tool post t nut and bolt.

The other must have is a M12 x 1mm nut to go on the end of the pulley.

If anyone can give me a pointer as where I can obtain these I will be truly grateful.

chaz

Chris Evans 627/09/2019 07:29:44
1487 forum posts

Not able to help with Unimat information but most industrial fastener suppliers should supply the nut.

JasonB27/09/2019 07:36:10
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Moderator
16442 forum posts
1739 photos
1 articles

I think the SL takes the same size tee nuts as the Unimat 3 & 4 which are not too hard to find, either genuine Emco or imported for the bolt just get an M6 socket head screw of the right length.

The M12 x 1 nut is not the usual coarse thread but they are quite common so should not be difficult to get assuming it id a right hand thread on that end of the spindle

 

Edited By JasonB on 27/09/2019 07:39:09

HOWARDT27/09/2019 08:19:11
462 forum posts
14 photos

Bearing locknut is M12x1, if that helps.

Charles Jarman27/09/2019 08:19:30
11 forum posts

I’m not familiar with the other models so I’ll look those up, cheers Jason.

Charles Jarman27/09/2019 08:21:42
11 forum posts
Posted by HOWARDT on 27/09/2019 08:19:11:

Bearing locknut is M12x1, if that helps.

morning Howard, yes that’s the nut size I quoted, actually all the thread sizes are the same on this lathe.

chaz

3404627/09/2019 08:32:52
769 forum posts
4 photos

Have both the SL and 3.

!2mm thread on sl and 14mm on the 3.

Can send drawings of missing items as easily made

Send PM if I can help.

Bill

Charles Jarman27/09/2019 08:41:56
11 forum posts

Morning Bill, I have all the dimensions, I’ve found a suitable t nut with a 6mm thread for the tool post, just a case of finding the spindle end nut, then I can start to learn how to use the SL, neat little machine...first steps.

my first mistake, I bought five carbide tip cutting tools, and they are 2mm too high for dead center, will now purchase the 6mm square tool, I can add shims if necessary but cannot remove the 2mm as 4mm will become too weak imho.

chaz

JasonB27/09/2019 08:58:55
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Moderator
16442 forum posts
1739 photos
1 articles

Nuts and nuts but do check it is a RH before ordering.

Charles Jarman27/09/2019 09:04:56
11 forum posts
Posted by JasonB on 27/09/2019 08:58:55:

Nuts and nuts but do check it is a RH before ordering.

excellent! Many thanks for that link Jason, now sorted.

chaz

3404627/09/2019 09:14:44
769 forum posts
4 photos

6mm tools with a very thin shim is ideal.

Bill

Charles Jarman27/09/2019 09:21:16
11 forum posts

The last time I used a lathe was back in school over 45 years ago....wow! That long.

what I need now is a good book to read, can anyone suggest something ? Preferably mini lathe orientated, there are parts of the lathe process that were not covered at school, oh how I miss those days.

chaz

3404627/09/2019 09:27:57
769 forum posts
4 photos

Google search, put in -- UNIMAT LATHE BOOKS. Good selection including one on useful accessories.

Also - THE MINI LATHE book is worth having - bought mine from Amazon.

Bill

Charles Jarman27/09/2019 09:49:38
11 forum posts

Thanks Bill.

chaz

Hollowpoint27/09/2019 10:06:31
225 forum posts
28 photos

Look for the "workshop practice series" books, there is loads of them, about 50! Not expensive either.

Brian G27/09/2019 10:15:39
603 forum posts
25 photos

Have you joined the Unimat SL group on Yahoo yet Charles? It is a friendly and active group and there is lots of handy stuff (including books, manuals and parts lists) in the files section. You can find it here. As far as spares are concerned, you can get everything at Toms Tool Store, although to be honest I haven't used them myself as I'm too tight to pay shipping from the US.

Brian

Greensands27/09/2019 10:20:36
6 forum posts

IMHO you cannot better - "The Amateurs’ Lathe" by L H Sparey, admittedly written around the Myford Series 7 but none the less an excellent all round guide to the use of the lathe.

Farmboy27/09/2019 10:25:21
119 forum posts
8 photos

My admittedly limited experience with a Unimat SL taught me that one of the most important things was to use really sharp HSS tools. I never tried carbide but my subsequent experience would suggest it is not really rigid or powerful enough to make good use of them, although someone will probably come along who uses them all the time.

It was a sweet little lathe and I still have some regrets about selling mine a few years ago but it was far too small for some of the jobs I wanted to do.

Charles Jarman27/09/2019 10:36:15
11 forum posts
Posted by Farmboy on 27/09/2019 10:25:21:

My admittedly limited experience with a Unimat SL taught me that one of the most important things was to use really sharp HSS tools. I never tried carbide but my subsequent experience would suggest it is not really rigid or powerful enough to make good use of them, although someone will probably come along who uses them all the time.

It was a sweet little lathe and I still have some regrets about selling mine a few years ago but it was far too small for some of the jobs I wanted to do.

I came across a YouTube on the subject of carbide versus hss and he gave a good account on both types, the problem I’ve since found with this mini lathe is that 6mm carbides tips stand proud by 2mm above dead center, my mistake, now I have sourced 6mm hss, a cheap set admittedly, but something to start and practice with, it’s a lovely little lathe, well made too.

i am after the long handle that turns the spindle back and forth, certainly will need it if I convert the lathe for milling, if anyone has one.

chaz

Andrew Johnston27/09/2019 11:05:12
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4890 forum posts
550 photos
Posted by Charles Jarman on 27/09/2019 10:36:15:

....a cheap set admittedly, but something to start and practice with...........

That's false economy. Small lathes, and the inexperienced, need all the help they can get. Using cheap cutting tools often just leads to frustration. As does the use of scrap material of unknown composition. It's not uncommon for threads to appear on the forum along the lines of difficulties with cutting and getting a good finish. Many of the probems are solved by changing to known material and quality cutting tools.

Andrew

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