3 years ago#1
jboaksmith
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I've been wet carving concrete using a mix of portland cement, medium coarse sand and admix, with good results, but I'd like to try a mix that would be good for polishing. I've heard I should try marble dust, which I think is limestone. I have some dolomitic lime dust on hand, can I use this or is there another type that would be better? Also, should I skip adding the sand all together and just sub lime in the same proportions?

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3 years ago#2
darilatkins
Platinum Member
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After asking around, am told that the dolomitic lime you plan to use is probably of the agricultural variety and would be of a fine grade. I am also informed that you have to be very careful from the health aspect.

What has been suggested is that you acquire marble chips from anywhere that marble is being worked on. Then manually crushed the chips. The grain would be larger than the dolomitic lime. It seems that you can just mix this grain with white cement and will be able to get a good polish on the finished product. The addition of plaster or sand was not recommended.

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3 years ago#3
jboaksmith
Guest

Thanks for asking around! And yes, it is the agricultural variety. So, beside the health aspect, is it too fine textured to use, or is it that it won't polish well? I ordered some marble dust from ebay, it's the type they mix with acrylic paint, just powdered calcium carbonate. Will this type of thing work? And thanks again for taking the time to look into it for me!

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3 years ago#4
mickpearson
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ciment fondu polished with shoe polish nuetrel or black gives the top result try it and see for your self

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3 years ago#5
jboaksmith
Guest

I'm not sure what you mean by ciment fondue. Can you tell me what the ingredients are and in what proportion they are used? I'm also curious about how I would go about using the shoe polish...do I carve the wet mix, wait for it to dry and then just rub on shoe polish? Should I sand the piece with something first? Thanks for the information!

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3 years ago#6
mickpearson
Master
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OK.ciment fondue is a french ciment lafarge. you just make it with 3 parts sharpsand.or concrete sand of your choice. and ad 1.prt ciment fondue you can buy it in white secar or grey. grey is cheaper. its a sculptuers favourite choice medium in ciments. you can buy it on order from builder yards. or from sculptuer suplyes

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3 years ago#7
mickpearson
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AND i forgot to ad that you apply the polish to the dry object. with an old toothbrush and let the polish dry. then buff it up with an old tooth brush. then use an old rag and you will see fantastic results looks glassy

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3 years ago#8
jboaksmith
Guest

Thank you so much!! I can't wait to try. So, I'm assuming this ciment fondue you mix with the sharp sand yields a smoother result than your average concrete mix (made w/portland cement and masonry sand). I say this because, if I tried to use shoe polish in that way with the mix I usually make, the dry product would have a semi rough texture that I don't think could be made to appear glassy with any product. Sharp sand and ciment fondue must be very fine textured. Do you have any specific suggestions of where I might find the fondue....I've been to many builders supply and haven't seen anything like that. And thanks again..~Wendy

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3 years ago#9
mickpearson
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HI when i replied. to you it was nearly 1.am; so i went to my bed. can you buy jesmonite resin where you live jesmonite resin is none toxic it is just an outdoor plaster.with a water based acrylic resin. you can buy it in a soft grade for carving and you can buy it in two outdoor grades you can mix it with jesmonite metal/powders. not the same metal powders. as you mix with resin. you can also mix marble powder portlandstone. granite. and you can polish it. or colour it in any colour you like. you can even blend colours together. to achieve the finishes you want it polishes up to a high luster finish. like some resins and glass.there is no odder and it is 100/percent safe to use and you can make it look like concrete you can coat polystyrene with it and make a bentch strong enough to sit on and still be light enough to carry.and you can make huge sculpted pieces.in this way.if you use metalpowders lightly rub it with wire wool then polish it up with brasso metal polish and you can patina it with black masonary paint and wipe it back of before it dries. now finaly back to ciment fondu.wich is indeed a creamy ciment and can be slush cast by making up a goo with just the ciment and a little water first to coat the inside of a mold if casting with it you would then pack the remainder on by hand.wearing gloves.and it can handle very hot to very cold conditions and you can look for suplyes on the web. its the hardest ciment on the planet so far.

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3 years ago#10
mickpearson
Master
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check this out www.propbuilders.co.uk

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3 years ago#11
mickpearson
Master
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ALSO try white or grey ciment fondu with white marble dust with polishing. www.ciment fondu.com/gb/contact.html for cement fondu all over the world

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2 years ago#12
Mika Flakes
Guest

I know this thread is old but I want to let all of you searching know that I offer the Ciment Fondu on ebay in small packaging sizes.

We have begun offering this after seeing the frustrating process artists, bonsai hobbyists, and pizza oven builders go through to get this cement via our construction sales outlet.

So hop over to ebay and search. My store name is Mica Flakes if you need additional search terms.

In addition you can typically find marble chips at any Terrazzo supply outlet. As for limestone and dolomitic sand this is commonly used in pool plasters and should be readily available at and material yard dealing in those materials.

-Mike D

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1 year ago#13
Gee Bee
Gold Member
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Votes: 4

Thanks Mike...most helpful..You should join and help with answers...thanks again

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