Studer A807 head relapping

[jaehong Lee]

Hi!

I tried to relapping Studer A807 heads.

But I can't take out record haed from shield housing.

One side is easily off. but the other side stucks (like corrugated or bonded)

I need help or guidance from experience

[q-tip]

The other side of the housing is glued. You can get it off if you really want to.

Lapping heads that were correctly adjusted and never removed usually doesn't make sense.

Regards
Robert

[jaehong Lee]

Hi

Robert.

Thanks.

Do you suggest that relapping A807 head is meaningless?

I am confused .

Maybe due to not good English to German translation .


Anyway it is very strongly glued.

I can't  take out with my hand force.
Jaehong

[Baruse]

Re-lapping a head only makes sense if it was misaligned and developed an uneven wear pattern.
If the head surface looks fine, there’s no reason to lap it – doing so would just remove material unnecessarily without any positive effect.

[AKRETA]

It depends on the surface of the head. When a Revox head is flat there is not much material in the gap left. So when you lap the head the gap gets wider and higher frequencies will suffer. If the surface of the head is uneven or if it has been readjusted then lapping may help to get a better contact between head and tape.