Pointing
 

Mark wrote:
The Medway Handyman wrote:

Got to do a fair bit of pointing soon,

I've also seen a sort of sealant gun for mortar

http://www.toolstation.com/shop/Hand...0/sd140/p51065
Are these any good? Bit wary after spending money on a Durgun which was
useless (I know its for a different application).



video of someone using a mortar Gun
its ok with Lime, but Christ it would be an unimaginable mess with cement
mortar.
http://www.youtube.com/watch?v=cgjxCcQ020M




That was certainly my experience

Pointing
 

In article ,
dave writes:
On Thu, 27 Aug 2009 10:38:16 GMT, Stuart Noble
wrote:

Mark wrote:
The Medway Handyman wrote:

Got to do a fair bit of pointing soon,

I've also seen a sort of sealant gun for mortar

http://www.toolstation.com/shop/Hand...0/sd140/p51065
Are these any good? Bit wary after spending money on a Durgun which was
useless (I know its for a different application).

video of someone using a mortar Gun
its ok with Lime, but Christ it would be an unimaginable mess with cement
mortar.
http://www.youtube.com/watch?v=cgjxCcQ020M

That was certainly my experience

Would you care to elaborate for folk like myself who don't know why?

Well, I haven't tried one, so I can only guess, but I can't
imagine mortar being sufficiently fluid to flow through the
device. Imagine trying to operate it full of dry sand for
starters -- I wouldn't expect that to work. If you make the
sand damp, it's even less fluid (i.e. you need wet sand to
make a sand-castle). If you add more water (ignoring for
the moment that it will be wrong proportion for a mortar),
then squeezing it will just squeeze out the excess water,
as sand doesn't actually dissolve in water.

So I'm left asking myself how on earth it could work?
Maybe if you mixed your mortar with ultra-fine sandpit sand?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

Pointing
 

Andrew Gabriel wrote:
In article ,
dave writes:
On Thu, 27 Aug 2009 10:38:16 GMT, Stuart Noble
wrote:

Mark wrote:
The Medway Handyman wrote:

Got to do a fair bit of pointing soon,

I've also seen a sort of sealant gun for mortar

http://www.toolstation.com/shop/Hand...0/sd140/p51065
Are these any good? Bit wary after spending money on a Durgun which was
useless (I know its for a different application).
video of someone using a mortar Gun
its ok with Lime, but Christ it would be an unimaginable mess with cement
mortar.
http://www.youtube.com/watch?v=cgjxCcQ020M
That was certainly my experience
Would you care to elaborate for folk like myself who don't know why?

Well, I haven't tried one, so I can only guess, but I can't
imagine mortar being sufficiently fluid to flow through the
device. Imagine trying to operate it full of dry sand for
starters -- I wouldn't expect that to work. If you make the
sand damp, it's even less fluid (i.e. you need wet sand to
make a sand-castle). If you add more water (ignoring for
the moment that it will be wrong proportion for a mortar),
then squeezing it will just squeeze out the excess water,
as sand doesn't actually dissolve in water.

So I'm left asking myself how on earth it could work?
Maybe if you mixed your mortar with ultra-fine sandpit sand?


I have tried one, and it progressively compacted the solids as you would
expect. IMO the only things suitable for such a device would be those
that normally come in a cartridge anyway, and they would be too sticky
to load manually.

Pointing
 

Stuart Noble coughed up some electrons that declared:

I have tried one, and it progressively compacted the solids as you would
expect. IMO the only things suitable for such a device would be those
that normally come in a cartridge anyway, and they would be too sticky
to load manually.

I had a long look at those on the internet - I was wondering the same. Good
to have confirmation.

Gun delivery is certainly a good idea in principle - being able to inject a
fillet sized stripe direct to where it's needed without faffing.

But AFAICS, the only way this is actually going to work with with a pump and
a specially forumalated mix.

Some sort of electric gun (even something with a small battery drill on the
back) and a worm drive pump might work - thought I'd seen something like
that somewhere...

Tim

Pointing
 

So I'm left asking myself how on earth it could work?
Maybe if you mixed your mortar with ultra-fine sandpit sand?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]



See http://www.pointmaster.co.uk/how_to.html

Pointing
 

Michael Shergold wrote:



So I'm left asking myself how on earth it could work?
Maybe if you mixed your mortar with ultra-fine sandpit sand?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]



See http://www.pointmaster.co.uk/how_to.html

yes as i said originally,
the mortar mix is far far too wet, so it comes out like Diarrhea, it will
get all over the face of the bricks and will look like a dogs breakfast done
by an amateur.
and note they don't show it being used to actually do any pointing.

Pointing
 

Mark wrote:
Michael Shergold wrote:

So I'm left asking myself how on earth it could work?
Maybe if you mixed your mortar with ultra-fine sandpit sand?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]


See http://www.pointmaster.co.uk/how_to.html

yes as i said originally,
the mortar mix is far far too wet, so it comes out like Diarrhea, it will
get all over the face of the bricks and will look like a dogs breakfast done
by an amateur.
and note they don't show it being used to actually do any pointing.






The one I used was the cartridge type. This looks slightly more
promising, if only as a way of doing the vertical bits. I've rigged up
various aids for that but still end up using fingers. That bricklayer's
flick whereby the right amount miraculously lands exactly where you want
it is a source of wonder to me.
Maybe the consistency/flow thing is all about the plasticiser, a mousse
type mix that flows easily without needing too much water