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CovMac Lathes

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Phil Whitley15/09/2019 12:26:59
1194 forum posts
145 photos

The covmac LIVES! Got it finished Friday afternoon. As an added bonus, everything works, ran through all the feeds and speeds, and it's all good. Did a meticulous clean of the three jaw backplate thread, oiled up the nose thread, and fitted it. Interuptions notwithstanding, on Monday I will be finding a suitable pump from my collection, for the coolant system, and looking at making the missing hinge block for the plinth door, and then it will be truly finished, and fully usable. I will combine the pump search with a tidy up and general sort out of my "stores" which contains quite a large quantity of stuff which will be bound for the scrapyard, which gives me a chance to go poaching for materials! Hope this link works!

Edited By Phil Whitley on 15/09/2019 12:28:06

Edited By Phil Whitley on 15/09/2019 12:39:16

CHRISTOPHER MILLS 115/09/2019 17:16:57
152 forum posts
61 photos


Congratulations! I am very pleased to hear this, and will watch your You Tube video



Brian Wood15/09/2019 18:50:28
2187 forum posts
37 photos

Well done Phil.

I don't like to be critical, but was there an element of variable speed running in the higher speed you demonstrated?

Next test of course is to make some swarf.

Best wishes Woody

Phil Whitley16/09/2019 10:19:30
1194 forum posts
145 photos

yes Brian, very keenly observed! it was a bit variable in the higher (lol) speeds, and I had noticed that the lathe was harder to turn manually than I would have expected, when turning the input pulley, so I need to check the clutch, and check the freeness of the headstock. I took the cap off the headstock to observe the oil splash, and got a rather closer view of the oil splashing than I would have prefered! After I had cleaned it off the wall and me, I drew the conclusion that the oil was somewhat sticky, and may be part polymerised, so a good warm up and oil change is on the cards. I think from checking lathes site that the headstock is all bushes apart from a ball thrust bearing, and it gives me an excuse (as if I really needed one) to take the top off the headstock and have a look. I found all manner of spare parts in the bottom of the Colchester headstock and once I am happy with the Covmac, I will be stripping the colchester headstock (which I think is noisier than even a Colchester headstock should be, and has had the  bearing adjustment nuts "messed with") with a view to changing some bearings, including the main spindle bearings, which I was lucky enough to get an immaculate set of for reasonable money, and if I need any bushes or spacers making for extracting the bearings, I can make them on the Covmac. Onward and upward!

Edited By Phil Whitley on 16/09/2019 10:25:59

Edited By Phil Whitley on 16/09/2019 10:26:42

Edited By Phil Whitley on 16/09/2019 10:27:34

Phil Whitley19/10/2019 11:12:46
1194 forum posts
145 photos

First Covmac swarf! finally found half an hour at 4-30 yesterday to put a tool in the covmac and do some turning to asses the lathe. turns really well, no chatter, no play on bearings, excellent finish and a surprisingly concentric 3 jaw chuck. the lathe is still hunting a bit on speed, but the oil is so gluey I am not really surprised. I also found that I had got the toolholder from the original pics and used that for its return to use excercise. I was rushing, and the tool was good, but not brilliantly sharp, i had touched it up on a diamond plate and went with it!

original tool holder

and some new swarf!

John Lapthorn29/12/2019 18:59:14
11 forum posts
24 photos

Just found this link......


I make this approximately 7 left of both models

Phil Whitley29/12/2019 19:14:14
1194 forum posts
145 photos

Interesting John, although this one looks to have been modified for some particular purpose, note the big pulley in the quick change box. That is the 13" geared head model, like mine!


Thomas Schweizer24/03/2020 10:25:23
2 forum posts

Hi everyone, new to the site and live in Australia. I have read on a covmac thread that these lathes are rare and that their is only one in Australia. I just bought one, so I am thinking there must be two. Unfortunately my new (old) lathe is missing the gear cage door, the screw in cap on the headstock and the jaws from the four jaw??? Does anyone know if these parts are available in England - in any condition? It would 've so good to be able to have the lathe complete.

Howard Lewis24/03/2020 12:13:31
3272 forum posts
2 photos

To search for the jaws for your 4 jaw chuck, you need to know the make of chuck, and its size (ideally the maker's number) .

Then, you can either appeal on here, or Google, and possible sources may become known.


Thomas Schweizer28/03/2020 11:40:32
2 forum posts

Thank you Howard, I thought it may have been original from covmac, Good to know I may still have a chance

Pete Rimmer28/03/2020 11:44:16
716 forum posts
49 photos

I have several sets of 4-jaw chuck jaws. No idea what they fit as they came in a bag with a load of others,

Measure your screw pitch, jaw width and slot width Thomas and I'll see if any of mine are close.

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