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30th August 2011, 05:29 PM #1Awaiting Email Confirmation
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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.
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30th August 2011 05:29 PM # ADSGoogle Adsense Advertisement
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31st August 2011, 10:52 PM #2
Carbatec catalogue shows a mortar chaser bit that fits in 4" grinders. I was unable to get it on line so can not provide a link. Item code is TMR-840, cost $10. (page 242 of the 2010 catalogue.)
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1st September 2011, 09:23 PM #3Awaiting Email Confirmation
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Dear HandyJack,
Thanks for the reply. They look like they're from the same manufacturer as these ones that McJing carries:
Attachment 180826
The bottom three - said to be mounted on a "6mm" shank - would be of particular interest, because I could possibly stick them in the Router in order to achieve better dust-extraction than if I were to use the Angle Grinder versions. Only thing is - do they actually mean 6mm when they say "6mm", or do they really mean 1/4"?... Surely the latter...
But in either case, maybe a "tree" or "candle"-shaped solid carbide burr might be a better proposition anyway. Heck, if they're hard enough to grind welds, they must be hard...
Best Wishes,
Batpig.
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