How To scribe centerlines and bevel widths

[weo]

granite surface plate and height gage with carbide scribe

This.

 

[Hubert S.]

Is there a cheap/fast place to get some carbide rod? Amazon is one place, but it takes a while. Im only used to seeing it as drill bits ... but surely there is something that can be picked up at home depot, HF or similar?

What size do you want? You can get lots of carbide scribes on Amazon next day, some with replacement tips included. That way, you have a scribe for general purpose use and a tip for you center line jig.

If you need to sharpen the tip, you can get diamond Dremel discs from Harbor Freight for cheap, I think about five bucks for a pack of four. Chuck the carbide in the drill press to spin it and use the diamond disc to sharpen.

 

[Cushing H.]

What size do you want? You can get lots of carbide scribes on Amazon next day, some with replacement tips included. That way, you have a scribe for general purpose use and a tip for you center line jig.

If you need to sharpen the tip, you can get diamond Dremel discs from Harbor Freight for cheap, I think about five bucks for a pack of four. Chuck the carbide in the drill press to spin it and use the diamond disc to sharpen.

I guess i could go that route. I have one of those scribes... but for some reason i was thinking of a carbide rod sharpened to a chisel end. Though.... solid rod may well be too brittle for this application now that i think of it...

 

[Hubert S.]

I guess i could go that route. I have one of those scribes... but for some reason i was thinking of a carbide rod sharpened to a chisel end. Though.... solid rod may well be too brittle for this application now that i think of it...

I don't think it will be too brittle, I use a solid piece of carbide for the tip in my straightening hammer... McMaster has solid, precision ground carbide rods from 1/16" diameter on up.

One other thing that could work well is a tooth from an old carbide tipped (miter, table, circular or similar) saw blade. You could dress it on a diamond sharpening stone if you have one.

 

[Cushing H.]

I don't think it will be too brittle, I use a solid piece of carbide for the tip in my straightening hammer... McMaster has solid, precision ground carbide rods from 1/16" diameter on up.

One other thing that could work well is a tooth from an old carbide tipped (miter, table, circular or similar) saw blade. You could dress it on a diamond sharpening stone if you have one.

Unfortunately i dont have one...

 

[Joseph Bandeko]

Does this work? https://www.mcmaster.com/metals/tungsten/ultra-hard-c2-tungsten-carbide-rods-6/

edit. Oops to late

 

[ChristoDart]

I find that a digital height gauge works great. Grizzly no longer has the one I have but this seems similar enough. I don’t use it in a granite block I just use it on glass adhered to MDF. https://www.grizzly.com/products/igaging-0-6-digital-fractional-height-gauge/t21576

 

[Richard338]

I find that a digital height gauge works great. Grizzly no longer has the one I have but this seems similar enough. I don’t use it in a granite block I just use it on glass adhered to MDF. https://www.grizzly.com/products/igaging-0-6-digital-fractional-height-gauge/t21576

I got one like that on Amazon.
Looking now, there is an option to pay $30 more for a carbide scribe built in.

 

[Natlek]

I guess i could go that route. I have one of those scribes... but for some reason i was thinking of a carbide rod sharpened to a chisel end. Though.... solid rod may well be too brittle for this application now that i think of it...

tungsten electrodes for tig welding are cheap and easy to find