TCT Core Drills
 

The Medway Handyman wrote:

Do I use the hammer action on my SDS?

I believe with the TCT ones you may be able to. With a diamond one
definitely not.

I assume the best way is to drill straight through with an 8mm extra long
drill, then drill from each side?

Yup, if it is a cavity wall. For solid walls it depends on how deep the
core is. Typical diamond ones are a bit longer than the depth of a
course of bricks or blocks so it is easy enough to do a course and break
out the core if you want to drill from one side only. Usually for non
cavity walls I drill from one side only.

The 8mm taper drill guide looks pretty much like an 8mm masonry drill and
appears to be a taper fit. I assume the drift keys are to remove it, but
why 2?

For when you lose the first!

I have a 620w Wickes SDS with clutch, powerful enough? Failing that I have

It will do the smaller ones. My 780W Makita will just about cope with
the 110, but you have to take it carefully and make sure you drill a
nice straight core so you don't add to much resistance.

a Wickes High Torque mains drill, around 85Nm torque - but no clutch, just a
large side handle. Don't fancy using that much :-)

Well 85Nm is going to be the same as about a 20kg weight on the handle
- might be ok if you are expecting it and positioned safely!

(think I would rather have a smooth shank arbour though to allow for
some slip!)

I've e-mailed Toolstation asking for instructions, but obviously no reply
yet.

Have you tried the screwfix site - they often have downloadable
instruction books.

--
Cheers,

John.

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