Can In-Out Debur Bits be Sharpended?

[mmcmanus]

The title pretty much says it. The in-out debur bits can be pricey but they are very useful. The Yardstore has them for about $44 each. Can / how would you go about sharpening those bits?
Matt McManus

 

[HFS]

For Cogswell Burraway types you can replace the blade in all sizes except -3 ...

HFS