Source for really small masonry drill bits (1/16 or smaller)

[nes999]

Does anyone know where I could buy masonry drill bits that are 1/16" or smaller?

Our RC club is wanting to sink some bits metal (1/32" rod) into some scale concrete barriers. The best way I can think of is to drill and back fill with epoxy. The barriers are made of vinyl concrete patch.

 

[The Cobbler]

smallest I've seen/used is 1/8
can you drill 1/8 then put silicone on the end of the rod and sink them?

 

[CGT80]

You shouldn't need masonry bits, as it sounds like the patch is made from a form of vinyl. Drill bits under 1/16" will be less common, but out there. x2 on drilling with a 1/16" and using glue, epoxy, silicone or other adhesive.


Have you tried a run of the mill 1/16" bit in that material yet?

 

[nes999]

You shouldn't need masonry bits, as it sounds like the patch is made from a form of vinyl. Drill bits under 1/16" will be less common, but out there. x2 on drilling with a 1/16" and using glue, epoxy, silicone or other adhesive.


Have you tried a run of the mill 1/16" bit in that material yet?

I haven't tried a normal bit yet. I wont be over that way until next weekend.

I believe this is what the we will be drilling.


https://www.quikrete.com/productlines/vinylconcretepatcher.asp

 

[Dagny]

try a small nail.

 

[6PTsocket]

That stuff has sand in it. You are not going in with a nail or a regular twist drill. Masonary bits have a piece of carbide brazed to the tip of a steel bit. In the smaller sizes you can get a solid carbide bit. A brazed carbide tip is not workable in the tiny sizes.They are actually easy to find. Just google" solid carbide bit". Amazon has a bunch of them. They are used for things like drilling the better printed circuit boards that are glass filled and would dull a regular bit very fast. 1/16,1/32 and much smaller are available.

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[nes999]

That stuff has sand in it. You are not going in with a nail or a regular twist drill. Masonary bits have a piece of carbide brazed to the tip of a steel bit. In the smaller sizes you can get a solid carbide bit. A brazed carbide tip is not workable in the tiny sizes.They are actually easy to find. Just google" solid carbide bit". Amazon has a bunch of them. They are used for things like drilling the better printed circuit boards that are glass filled and would dull a regular bit very fast. 1/16,1/32 and much smaller are available.

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Thanks, I ordered some. Didn't even cross my mind.

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[rlitman]

That stuff has sand in it. You are not going in with a nail or a regular twist drill. Masonary bits have a piece of carbide brazed to the tip of a steel bit. In the smaller sizes you can get a solid carbide bit. A brazed carbide tip is not workable in the tiny sizes.They are actually easy to find. Just google" solid carbide bit". Amazon has a bunch of them. They are used for things like drilling the better printed circuit boards that are glass filled and would dull a regular bit very fast. 1/16,1/32 and much smaller are available.

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They're readily available, and also incredibly fragile. Like trying to drill with a glass fiber fragile. And they need to be run at REALLY high speeds. But once you're past all that...

I'd suggest a different angle. Use a dental drill.

 

[driftpin]

They're readily available, and also incredibly fragile. Like trying to drill with a glass fiber fragile. And they need to be run at REALLY high speeds. But once you're past all that...

I'd suggest a different angle. Use a dental drill.

Dremel has a drill press adapter available at the Big Orange Box store

 

[rlitman]

Dremel has a drill press adapter available at the Big Orange Box store

That's an option. A Dremel spins fast enough, and the drill press adapter will greatly reduce your chances of snapping bits vs hand holding.

 

[6PTsocket]

They're readily available, and also incredibly fragile. Like trying to drill with a glass fiber fragile. And they need to be run at REALLY high speeds. But once you're past all that...



I'd suggest a different angle. Use a dental drill.

A dental bit is actually more like a burr, for grinding out a pocket. It is not really made to drill a straight hole. Also the shank tapers to a larger diameter right behind the tiny burr.

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[rlitman]

A dental bit is actually more like a burr, for grinding out a pocket. It is not really made to drill a straight hole. Also the shank tapers to a larger diameter right behind the tiny burr.

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True, but if you use a tapping motion with it, you can successively get it to go deeper and drill a straight-ish hole with one. The taper behind the burr will prevent it from snapping if you accidentally go a little off angle when hand drilling.

 

[NC Rick]

If I was buying a drill for that, I would first try an expendable standard dill and if that didn’t work, I would buy a carbide drill made for hard metal. The hard metal bits are a type of spade drill with no flutes and support the tip better. Those drills are also shorter so less likely to break. I’d use what ever drill press device I happened to have and retract often during the drilling operation to blow out the crud. I’d be amazed if that didn’t work fine. You don’t want a lot of side force of those drills.

 

[nes999]

So I had some extra time today and drove over there. I definitely think in the long run a dremel drill press would be handy. I did however drill quite a few fairly quickly free handing the dremel with the carbide bit.

 

[egdede]

Thanks 6PTsocket. I'm going to order some of those bits. Just because...