Hi there. I have a Western Digital My Book Studio 2TB. One platter unfortunately has scratches and it kills heads, so data can't be pulled from there.
My question is, does the manufacturer (I know that they're not in the data recovery business) have machines that can make the surface of those platters smooth again so that heads won't break? Machines not available to the general public or data recovery businesses, for instance what about the glide and burnish machine?
Thank you.

No, whey will not fix it. Why even try? If there's scratch on one surface, you cut this head and try to read from others.

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odzyskiwanie danych

Why would they have such machines? It's 100 times cheaper to just send new drives.

Ah, the burnish device, https://www.mratek.com/MRA/Products.html

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Joep - http://www.disktuna.com - video & photo repair & recovery service

Yes but new drives do not contain my data.
So what's your opinion on the burnish device?

Yes, so Why would they have such machines?.

I don't have an opinion on those machines.

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Joep - http://www.disktuna.com - video & photo repair & recovery service

Gillware burnish/glide machine:

https://forum.hddguru.com/viewtopic.php?t=30853

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A backup a day keeps DR away.