Strange way wear on Ergodor

Turbinator · Nov 15, 2022

Good day to you all, I’m new here and could do with some advice on how to proceed with a weiler Ergodor rebuild I’m carrying out. The ways look very strange, almost like they have been eaten by acid or some other corrosive material. Have a look and let me know what you think. I’m in Finland and finding somewhere to regrind the bed is nigh on impossible…:/

Peter from Holland · Nov 15, 2022

They did turn some really nast stuff looks like
Never did see anything like that
I would check how deep the hardening goes
Good chance you go through it if you grind it all clean
AFAIK the carriage has SKC liner (Epoxy liner) Perhaps that failed or fell off being the cause of this excesive wear
If you decide to have it done I would advice to also grind the back side of the ways and incorporate a gib This to enlarge the surfare the carriage rides on when turning
It will benefit from that

Peter

Turbinator · Nov 15, 2022

Hi Peter, thanks for the advice. You're correct, the turcite on the carriage has worn down so far that the bed scrapers have worn to the vee of the bed, its also through to the casting in some areas. I'm not sure this is the cause of the surface anomaly on the bed ways though, it really looks like they were turning some very nasty stuff. I was going to remove all the old turcite and replace with the original 2.5mm thickness turcite and then scrape it in after the bed is ground, the underside of the carriage where to runs on the backside of the ways also has turcite, I can replace this and also scrape it in after grinding.hopefully I won't need to make a gib then. This was the most neglected unmaintained machine I've ever dismantled. As you can see from the half nut...

Peter from Holland · Nov 16, 2022

It looks like SKC on the picture Not turcite But I may be wrong
SKC is about the same as moglice But German made

I would once more recommend to grind the small vertical side on the ways and ad some sort of gib there
We machined some space between the bolt holes for the back holderplate for the carriage and incorporated 2 short gibs there on a single adjusting bolt
You can even do 4

Peter

Turbinator · Nov 17, 2022

Peter from Holland said:
It looks like SKC on the picture Not turcite But I may be wrong
SKC is about the same as moglice But German made

I would once more recommend to grind the small vertical side on the ways and ad some sort of gib there
We machined some space between the bolt holes for the back holderplate for the carriage and incorporated 2 short gibs there on a single adjusting bolt
You can even do 4

Peter

Hello Peter, so you mean to restrict movement in the horizontal plane? I found a shop that will friend the ways also

. I will take the bed there tomorrow. I don’t know if the bed is flame or induction hardened, but I don’t think it matters, they should be able to take enough material off to leave the bedways as new. Do you have any suggestions for replacing the SKC/turcite/moglice on the carriage? I’ve never done this before so am new to these materials. I’ve read some literature on the subject but it still seems a little daunting. The putty method seems the easiest and least messy method. Is this quite simply applying the putty to the ways in the carriage, and then sitting the carriage on the bed to create the bedway vee forms into the putty?

Graham

marcsO · Nov 17, 2022

Would machining cast iron have possibly caused this sort of wear as saw something similar with a Hardinge HLV a few years ago while I was on the hunt for a machine, similar wear look and the owner said he machined cast most of the time? Good luck with the project BTW

john.k · Nov 17, 2022

I had a locally made lathe once (Nuttall,IIRC)......anyway it had some kind of strange effect on the ways like tiny pockmarks in an otherwise shiny machined surface.........My best guess was the flame hardening had a strange reaction with the structure of the casting......maybe free graphite in the casting ..anyhoo,I pressure blasted it clean and epoxy filled the pits...and it sold OK and never heard about it.

Peter from Holland · Nov 17, 2022

The only surface now that prevents rocking in the hor plane is the small surface at the back of the V-ways
With also using the vertical far back of the ways one can dubble that surface
If you search for moglice here on the forum you find information about it
Also on the wedsite from SKC you find information

Petert

john.k · Nov 17, 2022

Yes ,the Richard King forum has volumes of instructions and good advice for using the plastics..........best to read it all before going further than the bed grind.

Turbinator · Nov 17, 2022

Thanks Peter and John, I think I will follow your advice. It seems like a practical solution to prevent any unwanted movement in the y axis.

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