Hi Pete,
I expect it is spring steel if you're dealing
with a (split) ring. So it's difficult to drill.
The simplest method is to dress it flush with the
pin surface as best you can, file or grinder, and
drill a new hole ~90 degrees from the old. A
little away from the old path if you have enough
material towards the end so you don't bump into
the old ring on your way through. It helps to
flatten the surface & centre punch where you want to drill.
If you try acid then get the strongest that you
are comfortable working with and wear eye
protection, gloves, blah blah. Don't worry about
the S/S pin, our 93% strength sulfuric acid pumps
& piping is stainless steel. Then when ready try
to drive it out with a pin punch instead of drilling.
Cheers, Russ
Sweet 35 mk-1
At 10:04 AM 16/05/2015, you wrote:
Pete,
For what itâs worth, Citric Acid will eat the
rust(iron) and not effect the stainless. I am
not sure how you would use that info. Maybe
soak the area intermittently with a 10% citric
solution. I donât think it will harm your fiberglass.
The powdered drink âTangâ is high in Citric acid.
Cheers
Rick
C&C 37+ Paikea
Poulsbo, WA
On May 15, 2015, at 4:36 PM,
<mailto:[email protected]>[email protected]
via CnC-List <<mailto:[email protected]>[email protected]> wrote:
Listers, please give me advice.
Due to inferior steel, a cotter ring has rusted
badly, and I am unable to remove the remnants from the pin.
So far, a hardened-steel drill bit (Irwin
brand) is simply enlarging the hole around the
edges, but not removing the ring remnants.
Is there chemical solution?
Any thoughts would be greatly appreciated.
Pete W.
Siren. Song
'91 C & C 30 MkII
Deltaville, Va.
Sent from my Verizon 4G LTE Tablet
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