Machine Sunnen rod hone - usefulness (other than servicing con rods)?

[Chipper5783]

Any folks here using a Sunnen rod hone? I have opportunity to acquire one, I used one in trade school way back when. They seem very cool and work great for what they are designed for - however the shop is getting crowded for another dust collector. I get a few small revenue jobs (almost always on the CNCs, occasionally some specific task on a manual machine). I’m pretty confident machining bores to half thou, sometimes taking a few licks with a spring hone.

Do you have a Sunnen style hone? What do you use it for?

 

[Gearhead88]

The one here is used for engine projects , it's tooled up pretty good , sadly it's an expensive machine to outfit ...... almost anything Sunnen on ebay is super expensive .
To fill the oil reservoir is now sneaking up close to a thousand dollars , There are ways to extend the life of the oil .
The oil that Sunnen sells is a specialty product with the correct formulation to promote cutting action , extend the life of abrasives , prevent the loading up of the abrasive stones , substituting the oil for a cheaper alternative is not advised .
I used to send out precision honing work or do it where I was employed , now I do it at home where I have control of the accuracy .
This one gets used for cylinders - the removable type , connecting rods - big or small end , bushings & bearing races