I have seen many times parts like that getting bowed due to stress caused by the casting itself. Over the years the stress relieves and the part bows.Now you pushed it back I think the internal stress is back again. Heat treatment does not completely the trick, time does the trick here . It's...
There is one for sale in NL, even some bidding on it: https://www.marktplaats.nl/v/doe-het-zelf-en-verbouw/gereedschap-freesmachines/m2042905065-deckel-coordinaten-machine-lkd
I think this firm called Beijing Jingdiao makes their own controls but they look like Haas controls. They also have their own CAD/CAM software.
https://www.marktplaats.nl/v/doe-het-zelf-en-verbouw/draaibanken/m2004560782-fanuc-robodril-d21mia5
I always thought that major companies mainly in Germany bought these machine for education of their junior machinists. ( called "Ausbilding " I think) They take it very serious and buy the best manual machines for that.
Not so in my country, they teach you the CNC stuff right away and manual...
To old for professional users, to bulky for home or hobby users. These machines are in no mans land. Perhaps some demand in Eastern-Europe.
But please let us know how the auction went.
I don't know the Riten IIRC centers. But I know SFJ also made centers for Sandvik. These are very good too. Maybe you mentions these?
There are also 1 or 2 Japaneese manufactures that are (from what I've heard) even better the Swiss. But I don't know their names.
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