4" core bit

[Ponty Massive]

I've got a job coming up which I need to install 7 extract fans. Is it worth investing in a core bit?

Any of you use them or just do it the old fashion way?.

 

[Specialist]

If I ever need 1, I hire it from a tool hire shop. No point buying 1 if your not going to use it a lot.

 

[i=p/u]

pilot holes and 10kg hammer drill and just add water to bag to make cement

 

[JD6400]

I would imagine that it will pay for its self with in the first three or four with the time saved on that job alone ?
Just make sure the apprentice does not stick it on hammer "cause it will speed it up" , WRONG answer !!!!!!!!!:nonod:

 

[RWJ]

Any of you use them or just do it the old fashion way?.

Drill, Hammer and cold chisel?....... NO THANKS!!!!

 

[Ponty Massive]

I've seen them advertised in screwfix for about £60, just wanted to know if they work well?

 

[JD6400]

Yes , we have several complete sets and it is not unusual to go back to the stores to find them all out on jobs when they are needed else where !
I would say go for the more expensive set with four or five different sizes in as we find it is not just the 4" that is useful .
I think CEF do a set for around £120 + vat

 

[mackers]

i have a set which is ok and have had alot of use out of it, i use my 2kg bosch sds drill ,but you really need a bigger drill .wouldn't do 7 on the trot it would burn out,
if your drilling from inside out and the property is lived in hire one with the hover attachment saves alot of tidying up

 

[PC Electrics]

I've seen them advertised in screwfix for about £60, just wanted to know if they work well?

I've got the blue ones from Screwfix. I've done about 20 holes with my 105mm now and it is getting a bit slow in hard brick. It's still okay in softer materials, so I'm going to get a new one and use that on the harder stuff. Might as well wear out the old one completely and get best value from it.

I charge my customers an extra £10 per hole to cover use of the core bit and wear and tear on the drill (Bosch DRE 26-2). Cheaper than hiring (per hole) and cover my costs, so everyone happy.

 

[MNR]

I've done a couple by stitch drilling and knocking out. But I've done a hell of a lot more with core drill and diamond cutter there is really no contest. Not used them before but tct core bit worth having a look at?

 

[JD6400]

I've done a couple by stitch drilling and knocking out. But I've done a hell of a lot more with core drill and diamond cutter there is really no contest. Not used them before but tct core bit worth having a look at?

Only if you want to knacker a good drill !
When we first started out as DPE money was obviously tight and diamond bits were rare to the common man , we lost three good main brand drills to tct core drills !

 

[netblindpaul]

I don't "do" that much domestic, but I still have found it worth while getting a "proper" set of core drills (Rothenberger) and a core drilling machine, (Bosch), well worth the investment.

 

[Ponty Massive]

Cheers guys, think I'll go and invest in one!!!

 

[MNR]

Only if you want to knacker a good drill !
When we first started out as DPE money was obviously tight and diamond bits were rare to the common man , we lost three good main brand drills to tct core drills !

Take that as a not worth looking at then. My Bosch core drill I also use for drilling out my new build joists, glides through with a nice auger bit. It now has two uses so you have an excuse to buy one.

 

[JD6400]

Just reread the thread , i took tct core drills to mean the type before diamonds became popular and are the one's with what could almost be described as big teeth at the cutting edge welded in about every 10mm and were used with the hammer on .
Sorry if that is not what you meant by tct and i have confused the matter ?:35: