sic powder

I've been at this honing thing a few years now. you know lapping with dmts atomas etc. Which are costly. So as many of u know about the uses of sic powder for lapping.i just wanted to sing praise for the use of them and the economics behind using them. When using them with tile marble granite or flat porcelain tile there fantastic.The working area is huge and there speed is just fantastic. A lil goes along way.. i lapped all my hones in about a half hour.And my hones just don't sit on the shelf!! If anyone is considering there use i would highly recommended them. These powders are readily available on eBay and amazon.

+1! Im done with dmts and lapping plates. One and done with the sic powder!

just read about sic powder the other day for lapping. What grit do you use? what's the best way to use it? thanks

I use 120 grit to get them flat, then I am using atomas for smoothing but am getting some 320 and maybe some 600 to finish. Its FAAAAAST. MUCH faster than any diamond plate I ever used for sure. And for 3 grits you have a lifetime worth of lapping for less than one atoma plate. I burned mine in less than a year even using wet/dry for initial flattening. $100 down the drain IMO. And the dmts are worse. You can certainly use the sic and then light touchup to smooth with wet/dry.

The powder is avaiable in various grits up to fine enough to grind lenses. Like any other abrasive, you choose the appropriate grit depending on speed and smoothness required - so for fast cutting a lower grit and then run up from there. If you need to take off a lot of stone start at 180 or so and then add a few in-betweens and finish on say 600.

I've been using the stuff for years to lap stones. I have the Shapton Lapping Plate with an assortment of their grits. It works rapidly and I can put a real polish on the stones. Almost too pretty to use.Har har.

Where are you guys buying sic powder?
What would I need to lap my stones? For say 20-30 lappings

I have nortons and shaptons

Amazon, ebay. Google it and see what you find. I just got some 600 grit on ebay 8 oz for $10 bucks or so shipped. 8 oz is a lot. I start with half a teaspoon and add as I need. Get a granite tile from home depot for 5 bucks or scrap granite counter or plate glass.

do you use water with it?

Hello, yes I put a half a teaspoon in the middle of the plate add a small amount of water to it, spread it out on the plate, then start lapping, keeping it wet, but too much water and your powder will wash away, add more powder and water if necessary. I think there are some youtubes on it for sure.

You want to make kind of a thick slurry.

I've read that the sic can become embedded in softer stones.
Have you guys found that to be true? In so in what stones ?

thats possible with any lapping system, diamond plate, wet dry or sic.

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Originally Posted by bill3152

thats possible with any lapping system, diamond plate, wet dry or sic.

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Have you ever had that happen? If so what lapping system and what stones?

I caught a rogue diamond in my naniwa 12k when I used to use one from my dmt 325. Bevel wrecker for sure. It was in there man! I had to lap it again to get it out and learned to be very aware and conscious that it could happen. So after lapping I rinse well and use my hands to feel. Theres no school for it though, anything is possible for sure regardless of what you use IMO. Has happened to me once only.

Use loose Silicone Carbide to get to flat with 60 or 80 grit. Once flat you can move up grits quickly to 220, where you switch to Wet and Dry to get to smooth. Wet and Dry or diamond plate will remove any lingering grit. Wash well with soap and water.

GotGrit.com has all you will need. A teaspoon of powder and a squirt of water to a toothpaste consistency, in a cookie sheet to contain the swarf on a flat tile or concrete works well and quick. A teaspoon or two will do a stone.

I use it for hard natural stones, for soft stones or synthetics a diamond plate is easier. CNTG sell a good 140 grit 8X3 plate that gets to flat quick. Finish on a 300 / 600 grit plate.

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Originally Posted by Euclid440

Use loose Silicone Carbide to get to flat with 60 or 80 grit. Once flat you can move up grits quickly to 220, where you switch to Wet and Dry to get to smooth. Wet and Dry or diamond plate will remove any lingering grit. Wash well with soap and water.

GotGrit.com has all you will need. A teaspoon of powder and a squirt of water to a toothpaste consistency, in a cookie sheet to contain the swarf on a flat tile or concrete works well and quick. A teaspoon or two will do a stone.

I use it for hard natural stones, for soft stones or synthetics a diamond plate is easier. CNTG sell a good 140 grit 8X3 plate that gets to flat quick. Finish on a 300 / 600 grit plate.

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Sorry to be such a nobie but what is CNTG?

Thanks for this info will order some tonight!!

I used them on my recent Arkansas purchases. The only regret was not finding them a few years back.

Yea, the only way to lap an Ark.

CNTG - Chef Knives to Go, the 140 plate is 30 bucks.

sic powder and ceramic floor tail ,this is it . Only way for the hard stones ,and its cheap.I even make koordinat system with pensil and cut shalow 2-4 mm chanels so it can be loaded and to hold the sic powder,in it.Fast , cheap , efective .
sic powder rules.

Won't sic wear down the granite base tile? I have never been able to decide what to use as a base plate for fear of wearing it along with the stone.

well ,here's a tip , if you are only roughing in a stone you can start with a cinder block that you have checked with a straight edge for flatness etc.or get three of them and use those three to lap themselves flat-true .cheers cam.as an aside granite tiles are dirt cheap here in Missouri so..... :)

I use 320 grit mixed with a lil water on a flat cermaic tile or granite.. don't worry bout wearing down the tile.. the 320 seems to work fast .just make sure u wash ur hones off with water then i wipe em down with a clean microfiber cloth.. good to go