Which lapping stone to get?

[bad-bryce]

I got my first coti from Felipe at classic edge. It is a beaut of a stone, it is a natural combo of blue and yellow. Will post pics of it later. He told me that it still needs lapping and i am stuck on which one to get. I know i want it 8x3 and either a 600 DMT Dia sharp or the 325 or 600/1200 DMT Duo Sharp. I am leaning more towards the Duo sharp because the 1200 i would use it to sharpen my kitchen knives (kitchen aid) but not too sure 600 or 325.

So yeah this is where i am stuck.

 

[Wid]

Out of what you listed DMT only recommends the 325 for lapping.

 

[Doc226]

DMT 325 is great for lapping.

 

[Proinsias]

DMT only recommend the 120 xx coarse for lapping as far as I know but for a coticule the 325 coarse is fine for the job.

A sheet of wet/dry paper around 300-400 grit on a flat surface will flatten a coticule for pennies, if the stone is only used for razors it will likely not need lapped again for a looooooong time.

On the other hand a 325 course diasharp + 1k waterstone + coticule is a great combo. The dmt will keep the 1k & coticule flat. DMT>1k will keep you kitchen knives happy. 1k>coticule covers most razors and if you get any ebay or antique shop beaters that need a lot of work the dmt will make short work of that.

 

[P Funk]

Where do you guys get the DMT 325 from?

I did a bit of searching and was only able to find 600s and up.

 

[Doc226]

http://www.amazon.com/gp/aw/d/B0001WP1L0/ref=mp_s_a_1?qid=1346277422&sr=8-1

 

[hokahay]

I bought one of these on sale. Works great and big CDI factor to boot!

http://www.woodcraft.com/product/2004864/7535/granite-surface-plate-9-x-12-x-2-a-grade.aspx

 

[P Funk]

Thanks Alfredo!
I did see that on Amazon but wasn't sure if that was the right one. I don't have any hones yet - still in the researching phase...

Where does the 325 come from? The model number seems to be D8F. The only numbers I see that match up are the stone is 3" wide and 25 micron diamond.

 

[Proinsias]

D8C = 325 grit, C = Coarse
D8F = 600 grit, F = Fine
The 8 is the length in inches

http://www.dmtsharp.com/sharpeners/bench-stones/dia-sharp/
If you hover your mouse over the little coloured diamonds it'll tell you the grit & fine/coarse/extra alongside the micron rating etc

 

[Wid]

DMT only recommend the 120 xx coarse for lapping as far as I know but for a coticule the 325 coarse is fine for the job.

A sheet of wet/dry paper around 300-400 grit on a flat surface will flatten a coticule for pennies, if the stone is only used for razors it will likely not need lapped again for a looooooong time.

On the other hand a 325 course diasharp + 1k waterstone + coticule is a great combo. The dmt will keep the 1k & coticule flat. DMT>1k will keep you kitchen knives happy. 1k>coticule covers most razors and if you get any ebay or antique shop beaters that need a lot of work the dmt will make short work of that.

When I called DMT they said the 325 was recommended for lapping.

 

[bad-bryce]

which one duo sharp or dia sharp are you refering to for the 325

 

[bad-bryce]

i have a Lee Valley near my house. i believe they send internationaly

Where do you guys get the DMT 325 from?

I did a bit of searching and was only able to find 600s and up.

 

[Gamma]

My next lapping plate will be an Atoma.

 

[paco664]

i will continue to use the sidewalk in front the house...



*(kidding i use sandpaper and a marble slab...)

 

[Danricgro]

The DMT D8C is extremely useful. Great for lapping. Great for honing chips out of razors and great for knives. It was one of my best hone investments.

 

[bad-bryce]

where could i get lapping paper and a flat piece of granite, marble, or glass?

Where do you guys get the DMT 325 from?

I did a bit of searching and was only able to find 600s and up.

i will continue to use the sidewalk in front the house...



*(kidding i use sandpaper and a marble slab...)

 

[jeness]

My next lapping plate will be an Atoma.

You will be really pleased with it, I was

The DMT8C is totally fine for lapping, anything finer sticks too much, and is too slow, anything coarser and you will see some deep scratches in your stone.

 

[cb91710]

wet/dry sandpaper on a flat marble or granite plate is a cheap way to lap...the DMT 325 is a great lapping tool

+1

That's all I use.

The Norton lapping stone was worthless. It flattened the Norton 4k just fine, but I spent a LONG time and never could get it to fully flatten the 8k side, and spent even longer to flatten maybe 50% of my Naniwa 12k.
Got the DMT325 and fully flattened all 3 stones in less than 15 minutes.
It might have taken 10 to fully flatten my C12k.

 

[Gamma]

The Atoma 1.2k is way more durable and consistent than the DMT.

E

You will be really pleased with it, I was

The DMT8C is totally fine for lapping, anything finer sticks too much, and is too slow, anything coarser and you will see some deep scratches in your stone.

 

[Alum of Potash]

You're from Canada. Grab one of these from Lee Valley: http://www.leevalley.com/fr/wood/page.aspx?p=32526&cat=1,43513,43553, slap some wetted 220x or 325x wet/dry sandpaper on it and you're golden. Better than the scratchy DMT diamond stuff IMO.