TCT vs Diamond COors

[VinceW]

I am considering the purchase of a core drill set does anyone have any experience to pass on, Re. the benefits or pitfalls regarding TCT or Diamond

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Moderator

moved as posted in WRONG FORUM

 

[ChrisR]

For occasional use, hire diamond kit, but not from HSS they're ridiculously expensive. Watch the wear charge.
What size holes? Small ones are OK with an SDS drill, don't hammer but the clutch is useful.

 

[VinceW]

Cheers....Do you use a normal SDS drill or specialist core drill (Makita 8406) for example?

 

[ChrisR]

8406 - which is barely adequate, but better than sds.

 

[oilman]

I use a Fermi SDS from screwfix. It has a clutch of sorts, and it's too fast for 100mm+ unless you flick the trigger on and off. But who cares, it only cost £50.

 

[croydoncorgi]

You still haven't said what hole diameters you need. If you're drilling larger than 50mm you'll kill a small drill very quickly. Also, for larger holes you REALLY need a drill with a 'breakaway' clutch. Otherwise, when the coredrill jams (they frequently do!) you'll hurt your arm(s), wrist(s) from the recoil of the drill. It ain't worth risking injury. And DON'T use the drill off a ladder without the right safety kit!

 

[Thermo]

ill second that. Even with a 50mm when it cathces boy does it catch, Had to use one without a clutch. First time i nearly broke my arm when it went, second time i was leaning into the arc of the drill. did the same again and being clever was not holding the side handle tightly, to avoid injury, let go as it bit and it swung round and smacked me in the face!

 

[ChrisR]

You were lucky! I'm sure I've writ before of the mate's mate who was using a TC core drill under a sink for the waste hole. It grabbed, and broke his jaw. Still makes me larf .

 

[Newboy]

Managed a morning in casualty last year having fractured my jaw and needing stiches in chin

memo to self for future - ALWAYS USE A DRILL WITH A CLUTCH WHEN CORE CUTTING

 

[ChrisR]

Don't know a plumber caller Mark N do you?!

 

[Thermo]

yeah i think i was lucky, knocked me for six though and god did i have a lump on the side of my face!

 

[ChrisR]

SPoke today with a neighbour who had a nice £160 AEG sds drill. I thought it would be good for diamond cores but be managed to burn it out on one. I have a failry early diy Black and Decker, 500W sds which drilled a lot of diamond core drill holes. A bit slow, but not bad. I also have a £300 Bosch sds Multi-drill which is OK, but too slow.
The "break" action of the sds clutch drives you mad on a difficult wall, whereas the proper diamond drills' clutches all(?) just slip, which is much less wearing on the arms!

 

[fronnie_5]

If doing big holes ie 4 inch plus its a damn site easier to "stitch" drill the hole then change drill for chisel and get the hole out that way. Only takes minutes instead of hours.

 

[bripl]

elu db1 excellent drill for dry diamond coring has a 3/4 chuck been using it for 6-7 years no competion against a sds,bosch gbh 5 for holes up to 42mm after that elu only suggestion would be to purchase a drill with the dust extraction facility

 

[ChrisR]

Elu are obsolete now aren't they, sadly?
Fronnie next time you need an accurate hole through a 13" solid wall ....... I wish you luck!
With average bricks it would be about 10 mins with a diamond core.