Hilti vacuum concrete hammer drill bits

Archived from the Tools In Action forum (Hilti). This thread is read-only.

BdenningerMember since Apr 2022

My vacuum bits are clogged due to drilling on wet surfaces, anyone know an easier way on unplugging them? I’ve tried 1/8 drill bits to tie wire

AltanMember since Nov 2011

Bdenninger wrote:

54 minutes ago, Bdenninger said:

My vacuum bits are clogged due to drilling on wet surfaces, anyone know an easier way on unplugging them? I’ve tried 1/8 drill bits to tie wire

I think a little piece of quality bike brake wire could help if used with a drill. But you have to use the drill according to the direction that the wire has been twisted. Also I would suggest to do this just after drilling as wet concrete could mean it was a fresh concrete and it can become harder in a day or a few. 

AltanMember since Nov 2011

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