[Avodah] knife sharpeners

[Micha Berger]

On Sat, Dec 02, 2017 at 08:01:31PM -0500, Zev Sero via Avodah wrote:
: On 02/12/17 15:56, Lisa Liel via Avodah wrote:
: >Are knife sharpeners mekabel taam?  And noten taam?  Do you need
: >different onces for meat, dairy, pesach, etc?
: 
: Since they don't ever contact food, I don't see how they could.

Since they are in heated contact with the knife, aren't there potential
na"t bar na"t issues?

Tir'u baTov!
-Micha