I recently found a KeenKutter 22 1/2 grinder at a flea market with all the parts, $6. I brought it home, soaked it in soapy water and white vinegar, and used various wire brush attachments on my drill to remove the dirt and corrosion. Mechanically it works great. However, I have since soaked it again in sanitizer, bleach, scrubbed it with GOJO, then baking soda, and then soaked it in straight white vinegar. It still has a rather strong metallic smell which I fear will be imparted to whatever meat I will grind in it. Any suggestions by anyone who has encountered this?
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Keen Kutter 22 1/2 grinder
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Club Member
- Nov 2017
- 7088
- Huntsville, Alabama
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Jim Morris
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I am afraid all the soaks in bleach, vinegar, etc, are likely responsible for all that. You've basically destroyed the coating that sealed the metal on the grinder. This is what happens with old aluminum pots, and they have to be passivated - i.e. develop a layer of aluminum oxide that serves as a protective coating over the metal. With pots I do this by boiling water in them. There are chemicals that can do it as well. With stainless steel (this does not appear to be stainless) it can be achieved with a paste made from Barkeeper's Friend and water.
I don't know what metal this grinder is made from, but I would try to remove all non-metal parts, and immerse it in boiling water for 15 to 20 minutes, to see if that helps, and stop the acid and bleach baths - that is going to make things worse.Last edited by jfmorris; June 3, 2022, 06:37 AM.
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Club Member
- Nov 2017
- 7088
- Huntsville, Alabama
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Jim Morris
Cookers- Slow 'N Sear Deluxe Kamado (2021)
- Camp Chef FTG900 Flat Top Grill (2020)
- Weber Genesis II E-410 w/ GrillGrates (2019)
- Weber Performer Deluxe 22.5" w/ GrillGrates & Slow 'N Sear & Drip N Griddle & Vortex & Party Q & Rotisserie (2007)
- Custom Built Offset Smoker (304SS, 22"x34" grate, circa 1985)
- King Kooker 94/90TKD 105K/60K dual burner patio stove
- Lodge L8D03 5 quart dutch oven
- Lodge L10SK3 12" skillet
- Anova
- Thermoworks Smoke w/ Wifi Gateway
- Thermoworks Dot
- Thermoworks Thermapen Classic
- Thermoworks RT600C
- Weber Connect
- Whatever I brewed and have on tap!
I did a little research, and the odds are that this antique grinder is made from cast iron. I don't think the boiling will hurt it at all, and may help get rid of some of the odor that the chemicals caused. I would then consider coating LIGHTLY with oil an baking in the oven to season, just like any other cast iron.
I would recommend NOT using bleach on it, and treat it like you would any other cast iron - maybe wash with mild soap, dry well, and oil after use.
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I recently discovered Fluid Film. https://www.fluidfilm.co.za/ It is terrific on my outdoor stuff. I wonder - would it be good for this? It is Food Grade. Anybody else using Fluid Film? I think it would work!
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I wire brushed one blade and immediately washed it in Dawn soapy water and rinsed it. A little metallic smell. I lightly coated it with olive oil and baked it at 450 for 1 hour. No smell, and a beautiful golden brown. See attached pics. I’ll now do the rest of it later this week a couple times, and then get to work making ham salad for my mother in law and coarse ground chuck for me. Thanks!!
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