[sm_jamieson]

Anyone used these ?
http://www.millepede.co.uk/anchors-a...re-anchor.html
Simon.

[PeterC]

On Thu, 4 Jun 2009 05:44:20 -0700 (PDT), sm_jamieson wrote:

Anyone used these ?
http://www.millepede.co.uk/anchors-a...re-anchor.html
Simon.

Does it need a square hole?
--
Peter.
You don't understand Newton's Third Law of Motion?
It's not rocket science, you know.

[[email protected]]

On 4 June, 15:05, PeterC wrote:
On Thu, 4 Jun 2009 05:44:20 -0700 (PDT), sm_jamieson wrote:
Anyone used these ?
http://www.millepede.co.uk/anchors-a...re-anchor.html
Simon.

Does it need a square hole?
--
Yep, you have to be quick with the drill keep it square ;-)

I'm not convinced about using it in hard blocks as they say,
but sounds like a good technology for aircrete (speaking as an
engineer !)
I can see how it would work.
If you use a long screw, you've got practically 2 methods in parallel.
I'll have to get some a try them.
Simon.

[Andy Dingley]

On 4 June, 13:44, sm_jamieson wrote:
Anyone used these ?http://www.millepede.co.uk/anchors-a...re-anchor.html

Best possible fixing for aerated blocks.

OTOH, if you're even trying to attach things to aerated blocks, you're
probably doomed.

Aerated blocks are crumbly and have low tensile strength over very
small areas (only something like 1/3rd of the average over a large
area, AFAIR). So other fixings, including resin, that try to attach to
a small hole are likely to fail by this local overloading. These long
split "clothespeg" fasteners aren't great over a small surfae either,
but they're big enough to be adequate and they distribute themselves
over the largest possible volume, so as to avoid local overloading.

[[email protected]]

On 4 June, 15:57, Andy Dingley wrote:
On 4 June, 13:44, sm_jamieson wrote:

Anyone used these ?http://www.millepede.co.uk/anchors-a...re-anchor.html

Best possible fixing for aerated blocks.

OTOH, if you're even trying to attach things to aerated blocks, you're
probably doomed.

Aerated blocks are crumbly and have low tensile strength over very
small areas (only something like 1/3rd of the average over a large
area, AFAIR). So other fixings, including resin, that try to attach to
a small hole are likely to fail by this local overloading. These long
split "clothespeg" fasteners aren't great over a small surfae either,
but they're big enough to be adequate and they distribute themselves
over the largest possible volume, so as to avoid local overloading.

I've built kitchen out of them (internal leaf only ;-) WIthout them,
wall would have been thicker and lost more internal space.
I will have to fix kitchen cupboards and a boiler to them.
I may fix ply to the wall with something like lots of these aircrete
fixings, then
screw what I like to the ply.
Simon.

[Tony Bryer]

On Thu, 4 Jun 2009 07:57:42 -0700 (PDT) Andy Dingley wrote :
OTOH, if you're even trying to attach things to aerated blocks,
you're probably doomed.

I never had any problems. Secret IMO is to use long screws and
make sure that the top of the plug is well below the surface of
the block so that when the plug expands it creates a 'plug' in the
middle of the block.

--
Tony Bryer, 'Software to build on' from Greentram
www.superbeam.co.uk www.superbeam.com www.greentram.com