Buy a corded one at Harbor Freight, drill your holes, return it.

There isn't a safe way to do this.

You CAN replace the head with an after market but it will cost you more than the cheap drill.

You could buy a 3000 dollar metal lathe and pare the drill shaft down a bit.

Seems like the most sensible option.

I watch YouTube. Pretty sure rockler/kreg/sawstop/squarespace or nord vpn can supply them.

Can you rent a bigger drill for an afternoon?

All fair suggestions, thanks guys!

I think I'm just going to bite the bullet and buy another 16mm masonry drill bit that DOES fit a 10mm chuck.

I'm aware using a cordless hammer drill is gonna take a while, but for just two holes a new bit seems better than buying a new rotary drill!

Get a different bit. Like this.... https://www.acehardware.com/departments/tools/power-tool-accessories/drill-bits/2401644

Reduced shank drill bit is what you want. Mcmaster Carr has them and everything else.

You can also chuck it backwards in a drill it does fit, and then spin it and grind the shank down, if you're careful to keep true it will work ok- a poor man's lathe.

SDS and SDS plus shank diameter is 10mm, I've never tried it but maybe you could chuck one up in a regular chuck?

> You could buy a 3000 dollar metal lathe and pair the drill shaft down a bit.

a normal drill bit is tool steel and very difficult to cut. i spoze a percussion bit might be easier.

cheapest real option is to get the correct size drill.

if you were a real hack you could change the shank from round to triangular using a bench grinder to fit in the smaller drill machine.

One of those is not like the others. Nord VPN?

Most drill shanks are slightly softer thane the flutes portion. I used to “pair” the down all the time!

Edit: in a pinch you could probably chuck in drill backwards and grind it against belt sander. I’ve done that as well at home with no pairing machine.

How many chucks could a drill bit chuck if a drill bit could chuck a drill?

that's a big hole for a hammer drill. you might have less trouble if you go rent a rotary hammer for an hour to pop your holes.

or you can use a smaller bit and add the connections after sending it through the hole. the cable is only around 6mm without the connector.

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You don't watch YouTube a lot do you?

Hahahha love it.

I replaced a 10mm keyed chuck with a 13mm keyless one. It will cost more than buying the right bit, but will increase the chuck capacity for future projects.

If you’ve not done it before, be very careful drilling into brick. If the bit gets stuck it can really mess up your hand/wrist/elbow/shoulder.

Most North American big box hardware stores will let you rent tools like a hammer drill of the correct size.

‘Pare’

Just buy or rent another drill with a 12mm chuck. And while you are at it, get a proper hammer drill with sds socket.

if you're going this route, go slow with it. once you get the bit overheated, it's done. and it will overheat very quickly.

I have ground down large bits to a triangular shape to get them to fit.

> I have ground down large bits to a triangular shape to get them to fit.

> if you were a real hack you could change the shank from round to triangular using a bench grinder

as have i, which is why i mentioned it lol. but we are hacks. in the truest sense of the word :)