Bench Top Lathes???

I believe you are over thinking this deal. I've cleaned them up by hand and never had an issue.

I've cleaned them up by hand as well.

these look just a little too rough for that but not rough enough to sleeve them.

plus I have a dozen.

If I can get a lathe (and know I can make it work) for the same cost as paying for them to be machined, them I'm ahead.