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I just picked up a mystery "slate" hone that I hope is a thuringian (I am so jazzed). The thing is, it smells of oil and I am concerned about the oil contaminating my brand new DMT Duosharp xtra coarse 220/coarse 320 if I lap it as is. The DMT will be used primarily for my Naniwas. Is there a way to remove some of the oil on the hone with a solvent prior to lapping it? Or should I not worry about this?
got an old pan and some oxy clean put a old rag at the bottom of the pan fill with water turn the heat on (low fire)put the oxy clean in and wait for the water to start to boil it should be around 180 degrees do it twice and the oil problem should be gone
Not to dissuade, but water boils at 212° F. Try boiling in detergent, or I have heard oven cleaner work, but it is caustic.
Howard posted that Easy Off with the blue label IIRC has little or no odor and will do the trick. I haven't tried it. I have used White Lightning Clean Streak degreaser with success. It is marketed for cleaning disc rotors on bicycles.
As another option, I've run several stones through a dishwasher cycle with no ill effects. They come out super clean and oil-free.
i think there is a lot options available. you can choose any of them.
My easy way is to cover on salt for a weak.
then pick it up you hone ready.
I don't think I would be boiling any natural stone. If there are internal cracks it could cause them to grow and result in a cracked stone.
Aerosol brake cleaner should work. :hmmm:
The first thing is that Oxy-clean doesn't dissolve oil or grease,and used to say so on the label,second try some Dawn dishwashing detergent which dissolves oil,put both in a pot with some cold water and bring to a slow boil,then let it cool SLOWLY,I did this with one of my fathers stones,really old and not a BBW,but an old oil/water-stone and it worked fine. I would just let it heat up and cool down slowly.
Hope this helps
Griz
The most intriguing solution for me is to soak the rock in a bucket of water with a tablespoon of Red Devil lye. In theory, the oil should sapponify (turn to soap) and then wash right off. A week in the bucket should do it. But that's only a theory; I've never tried it. But you'd be a personal hero and become an SRP legend if you did it.
Lap it with sandpaper till the oil has been lapped off. IME the oil never penetrates really deep.
yes i know water boils at 212 thats a roaring boil three inch's of water in a pan the water boils just a little (not a roaring boil ) at 180 i used a temp gun when i did this and yes the oxy clean works great its a detergent i have done this to three different stone's 1 indian and two arks before i put them in the water i cleaned the grime off with oven cleaner (easy off ) forgot that in the last post here is one of the stones that went through this process its the stone on the left you can still see some of the residue left on the stone absolutely no oil in or on the stone when i give advice it come's from experience
Pure water boils at 212F. Once a solute (oxyclean) is introduced to the solvent (water) the boiling point of the solution is lowered.Quote:
Originally Posted by rjezuit
I would be hesitant about doing this. First and foremost, how is the lye going to affect the structure of the stone? Being a chemist, and not a geologist, I don't know what this stone would be made of. But I would not like to find out that it reacts with NaOH. Second, if there is oil actually in the stone it would saponify inside the stone, causing bubbles each use. Although I put a couple drops of dish soap in my spray bottle to help ease evaporation from the stones.Quote:
Originally Posted by MarkinLondon
I vote for a good rinse in acetone, denatured alcohol, or isopropanol; something that is going to get out of the stone after a spell. The light boiling method sounds sufficient also, though.
If I were in your shoes I would opt for the least drastic solution. Try the Dawn diswashing detergent first in a sink of very hot water from the tap. Allow the stone to soak for several hours, perhaps even a day. Repeat the process, if necessary.
Dawn also makes a "Power Dissolver" that I have found quite effective at removing grease from dishes, etc. in the kitchen. You may want to try that as well. Spray it on the stone and let it sit for awhile before immersing it in the Dawn dishwashing solution.
Did what was recomended above,ran mine thru the dishwasher on High temp wash with the dinner dishes,they came out like new.
First give it a try...Quote:
Originally Posted by HarryA
Scrub the stone with a common cleanser and rinse.
Lap with a spray of simplegreen or any common dish soap.
and rinse well.
A DMT can be cleaned with a stiff brush and common
dish soap.
Since you have two DMTs use one for Naniwas and the
othher for the thuringian if you are paranoid.
Paint stores commonly have a TSP cleanser for preparing walls.
From wikipedia "The major use for trisodium phosphate is in
cleaning agents. The pH of a 1% solution is 12, and the solution
is sufficiently alkaline to saponify grease and oils. In combination
with surfactants, TSP is an excellent agent for cleaning everything
from laundry to concrete driveways."
i.e. after a basic cleaning you are good to go
and sure use it with oil if it is flat enough.
OK, after searching for what I had on hand in the house--
Oven cleaner
TSP
Lacquer thinner
OxiClean
I went with the oven cleaner this time around. One overnight treatment. Scrubbed the stone with a big brush until the water was clear. Seems to have worked pretty well. I still smell a hint of oil, but it is removed for all practical purposes. Lapped up easily with the DMT 325 with a chalky grey/ white slurry forming. Will try and take some pics and post it on another thread for opinions on whether I have a thuringian or not.
Thanks for all of the great suggestions and concern for my hone.
And remember that a little oil is a good thing.Quote:
Originally Posted by HarryA
Many do oil their razors to prevent rust so a bit
of oil is always in the game.
After reading all these posts it just proves the old adage "there's more than one way to skin a cat". I would just like to add one thing,I cleaned my stone more than a couple times to really get it clean,but the one advantage that slow boiling had was that when I thought it was clean,on the last boiling,I got about a tablespoon of black dirty oil floating on the water,and most of the smell was gone. I also forgot to say that a rag on the bottom of the pot was used in case it started to boil hard and the stone bounced on the bottom and I didn't want to cause a crack. That's just the way I did it,I'm sure there are other ways.
Griz
Yes, Oven cleaner ,if they are really grungy, then scrub in soapy water.
I have had good luck soaking in 25-50 percent simple green & water in a glass flip top canister jar with rubber seal leave in the sun, heat speeds up the oil release.
Also use a thrift store slow cooker, get the oblong one 5-10 bucks also with simple green and water works very well and will speed the process up.
I have one soaking now for about a month in a jar, I change the liquid once a week. I have soaked them for a few months to get ALL the oil out.
They will come clean eventually, just depends on how much oil was used on them.
TSP works well but is hard to find here, Simple Green is cheap, easy to find and works well. You can see the oil releasing, it drops to the bottom of the jar. I keep changing the solution untill it stays the same color.
O.K. thread,,,, wake up & clean them hones !! :rofl2:
Attachment 207491
lol! Behold! The power of linking a search result in another thread!
James.
might as well wake it,,, somebody will probably ask this same question within the week,,,,:D
Might make an awesome Wiki/library entry actually....
James.
it that a hint ???? :rofl2:
*cough* I have no idea what you might mean...
James.
, and I had plans of watching Oprah re-runs tonight,,,,,,:(
I will try to get an article in by morning,,,,,,,,,:beer2:
Interestingly I would take an alternative way. I would soak the hone on organic solvent like ether or methil cyanide for a couple days and let it dry naturally. Methil cyanide is relativelly cheap, will not bother a stone and leaves no residue.
Bloody Hell!! I'm not sure I am comfortable with this power I wield....! :DQuote:
Originally Posted by Hirlau
James.
Grizz, Good idea. I wouldn't want a good stone to crack because it bounced off the bottom of the pan. TSP is great stuff, but it is no longer allowed to be sold in California. It is still called TSP, but not the same stuff. Oil on a stone can really jam up lapping paper or a lap stone. I just use dish soap and a bit of water on all of my stones.
