[Mike Westbrook]

I got my little Miller hf 251 out the other day and for the first time It wouldn't make hf so I opened up the back and noticed that the gaps are super corroded my question is what's the best way to clean them without damaging them

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[Otto Nobedder]

I like to remove them completely, chuck 'em in a drill press (a mill is better), and run them against a flat stone like you'd sharpen a knife with.

Steve

[Mike Westbrook]

Thanks for the input I think that's what I'll try I have some 1600 grit that may work in the drill press I just wasn't sure if they had a mirror finish to them or it they looked smooth gray like a tungsten if you read the manual it basically says to toss them and get new at this point it's worth a try if not a new set is around 50.00 .......thanks

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[Mike Westbrook]

Chucked them in the drill press and wet sanded with 1600 grit then cleaned with acetone worked perfectly !

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[Otto Nobedder]

Glad to hear it, Mike!
I don't recall where I got that tip from, but it was probably here. I use this method at work as our machines see a lot of abuse, and it's always worked for me, even with the sloppy, worn out, 10-year-old Harbor Freight drill press we have.


Steve