wanted 45mm drill bit

I am after a large size drill bit :


https://www.hilti.co.uk/holuk/page/m...ProdOid=419151

pls let me know !

got sick of using a core bit for drilling waist pipe work

E bay have some sds max 45mm, looks like a beast of a drill bit!

Beats coring like you say... can feel like slow progress some times!

is just waist of a time me think drilling 1.5 inch core ! takes about 45m-1h ! is not so much the time that it takes but also looking after the hands

think my be quicker with the right drill bit

biggest bit i got is 32 sds, but then iv only got a little sds drill, not a Hilti beast!

Be careful as they can make an awful mess of brickwork on the outside of houses when they go through, unlike a core drill.

Originally Posted by WHPES

Be careful as they can make an awful mess of brickwork on the outside of houses when they go through, unlike a core drill.

i was thinking of pilot bit 18mm then 25mm then 30mm then 45mm
this way safe the drill and the drill bit of over working

Get one of these (or a couple of different sizes)
http://www.*************/p/erbauer-tct-core-drill-bit-50mm/26927;jsessionid=tTRLPC8GFqL5xH4lH2Vj1jzrT2vRxc3JL T5tXHZmGd9kZQHpHglg!1635862304
and one of these
http://www.*************/p/erbauer-sds-plus-arbor-300mm/64544;jsessionid=tTRLPC8GFqL5xH4lH2Vj1jzrT2vRxc3JL T5tXHZmGd9kZQHpHglg!1635862304
(scre w fix)

Std sds fitting but only do up to just over 300mm. It will do a hole through a cavity wall in under a minute, go through wood and rebar. You don't need the pilot drill as they are easy to start. They last about 6 months or so until you loose the teeth of them or the extension bar snaps. Very little breakthrough.

If you are going for an sds max bit, breakthrough bits are cheaper to buy.
Bosch 1618596455 (1 618 596 455) Breakthrough Drill Bits SDS-max 45 X 450 X 600 mm: Amazon.co.uk: DIY & Tools

diamond cores for me,down to 32, with water if hard, too much damage for me using tct or sds
imo

Originally Posted by dancinplumba

diamond cores for me,down to 32, with water if hard, too much damage for me using tct or sds
imo

this is for a work for housing association , not my lovely privet customers

It is easy to judge when you are nearly through with the small tct's. Take the hammer off for the last 10mm and there is little breakthrough or drill from outside in and at most you will need a small handful of plaster. SDS max bits and you will need a couple of brick to patch it sometimes.

im suprised they take you that long to core most brickwork 50 mm core tops 20 mins do you pilot drill first ?

No we don't , will that speed it up ?

My makita core drill (not sure what model, but has the variable speed on trigger) can put a 4 1/2" flue hole through an average cavity wall (concrete or brick, not thermalite!) in about 4-5 mins.... seriously I put it on hammer though, but its a very light hammer on this drill. You go through cores a little quicker, but not by much, but whats a core? £45? it's paid for itself if it saves you standing there with your head squashed against the ceiling kneeling on the kitchen worktop for half an hour!

Give it a go, you'll be surprised at the pace