I am digging some fence post holes using an auger and have hit a couple
of stones 18 inches down just cant shift them so looking to get a longer
SDS chisel off ebay to deal with it.
They advertise as 400mm length with a 14mm shank the part that goes into
the `chuck` in my sds is is 10 mm.
Am I measuring the wrong part, what part is classed as the shank?
the main body length or the part that goes into the `chuck?
SDS chisel bits have a wider body than the end which goes into
It may be that your drill is SDS plus, and the bits are SDS max
(larger chuck, for larger bits on more powerful drills).
These are not compatible, although you can get an adaptor.
Check with the seller it is SDS plus, and not SDS max.
[email address is not usable -- followup in the newsgroup]
I have to say, I rather agree. But OED says specifically the bit by
which is is held in the drill. (I would have avoided the word 'bit' in
discussing a 'bit' otherwise it can gt a bit confusing.)
Given they also say "cylindrical" I guess they are not up on hex bits,
the various flavours of SDS, Hilti, etc.
Definition of shank
1 (often shanks) a person’s leg, especially the part from the knee
to the ankle:the old man’s thin, bony shanks showed through his trousers
the lower part of an animal’s foreleg: many fast animals have long
shanks or calves
the shank of an animal’s leg as a cut of meat: meals like ham hocks
and lamb shanks are cooked with reasonably priced cuts of meat
2the shaft or stem of a tool or implement, in particular:
a long, narrow part of a tool connecting the handle to the
operational end: gouges vary in the amount of curve or sweep on the
cutting edge and the form of the shank
the cylindrical part of a bit by which it is held in a drill.
the long stem of a key, spoon, anchor, etc.: all Roman lever keys
have a tubular shank
the straight part of a fish hook.
3a part or appendage by which something is attached to something
else, especially a wire loop attached to the back of a button.
the band of a ring rather than the setting or gemstone.
4the narrow middle of the sole of a shoe: a rigid leather boot with
a full shank
One alternative is a large crow bar - generally good for hole digging and
shifting stones and stuff.
I don't know how effective an SDS chisel will be against a stone where you
describe it - the stone would have to be so well set that the chisel would
break it and not just hammer it further into the ground.
If your ground is full of stones then an augur may not be the best tool
for digging fence post holes.
I gave up on an augur (a cheap one though) and changed to a long iron bar
and a 'two spoons' post hole digging contraption.
Worked much better for me.
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