Thread: Carbide Rotary Burr or Diamond-Grit Point/Bit for "chasing in cement render?

Hello All,

This might sound a bit zany at first, but I’m toying with the idea of using one of my spare Routers to chase a few shallow grooves into some cement render. The concept appeals to me because the work is indoors, and I could hook the Router up to my auto-starting Shop Vac to hopefully limit the amount of billowing cement-dust compared to using an Angle Grinder. The Router would also give me a greater ability to make curved cuts in the render, which is precisely what I need to do.

The only thing is - what type of Cutter to use? Hmmm...

It seems to me that the choice would boil down to either a 1/4" shank Carbide Rotary Burr of the type used in Die Grinders, or some kind of specialised Die Grinder Point or Router Bit that was embedded with either tungsten-grit or diamond-grit. In either case, I would need something that was "candle"-shaped, so as to allow it to initially plunge through the render down to the required depth (approx. 8mm) at the start of each cut.

Finding a suitably shaped Carbide Burr wont be very hard at all, but a grit-embedded Point or Bit might be a different matter. Can anyone suggest some brands, if they think this could be the better of the two alternatives?

I didn't post this one in the "Router" sub-forum because it was just too left-field .

Many Thanks,
Batpig.