Use diamond dressed bits but remember to keep the rock cool by drilling under water or by periodically dipping the stone in water or if it's a big rock drip water on the rock. Anything up to Mohs hardness of 9 can be carved using the diamond dressed bits. You can usually buy a pack of different size and style bits cheaper than getting them individually.
What type of stone are you carving?
Forgot to add that the stone dust can destroy a Dremel if it gets into the brushes on the motor. Keeping the stone wet also keeps the rock dust from being sucked into the motor housing. If you drill under water, just use enough to keep your work surface submerged, you don't want the water to be higher than the working part of the bit.
You can get a cheap set of diamond bits from Harbor Freight. The dust will ruin your dremel if you let it get to it. But it will ruin your lungs too and while you can get another dremel lungs only come one pair to a customer. A paper face mask will not help as the dust that does the most damage will go through anything air will.
I wish I knew ... just a pretty rock I found in my yard. (There are millions of them!)
I wanted to make a gravestone for my cat who died last week.
DBF offered to have a stone carved for me (there is a lady who does it locally) but then it occurred to me that if I could do it with a dremel tool, I might buy one and do it myself ... I could use it for other things, too!
Thanks for all the suggestions! I will copy and paste this thread ... gotta wait 'til I get my first paycheck, but I think I'm gonna give it a shot!
I dream of a better world, one where chickens can cross the road without having their motives questioned.
Forgot to add thats what I did for a stone for my mom because my sis has her ashes in a box in her basement she wouldnt even give me any ashes,I wanted to have a diamond made to remeber my momma by sis said the ashes would mold if she opened the up,but I needed somewhere to morn my mom so I painted a big stone sealed a pic of her on it too in my flower bed at least I have a place to go,paula
'It Is A Wise Father Who Knows His Own Child'
A WOMAN MUST NOT RELY ON A MAN TO PROTECT HER, SHE MUST LEARN TO PROTECT HERSELF.
SUSAN B. ANTHONY
I either carve my stones outside with the wind to my side or use my big shop vac to pull the dust into it. I have a wet vac and add some water to both the filter and vac to help with the rock dust. Also if you wet your face mask it will pick up more rock dust than if dry.