[clug] Any spare HDD magnets?

[Brenton Ross]

Tony,

Your idea might be OK in calm conditions but even a slight breeze can
produce a flapping effect which will induce quite large forces at the
edges of the shade cloth. 

Having just done a small experiment I noticed that while the magnets
provide a quite large force of attraction it is still quite easy to
slide them when there is something between the magnet and the steel
surface. 

Hope you find a solution.
Brenton

On Tue, 2020-12-01 at 12:38 +1100, Tony Lewis via linux wrote:
> Hi Rod,
> 
> No, not tested, but I have a plan B.  Magnets would be the most 
> convenient and neatest, and any weakness in the magnet idea might be 
> overcome by simple quantity.  It's for a pergola. so it doesn't have
> to 
> hold much weight, rather just hold it in place.  Plan B is clips and
> cord.
> 
> Tony
> 
> On 1/12/20 12:00 pm, Rodney Peters wrote:
> > Tony,
> > 
> > Have you tested your concept ?  I don't have any magnets to spare,
> > but 
> > when I put some shade cloth between one and a painted steel
> > surface, 
> > the cloth is so slippery that it moves and wind would probably 
> > dislodge it.  The DIY advice seems to be to use cable ties or a
> > spiral 
> > of cord, for what you are planning.
> > 
> > I do have several HDD that have been wiped, awaiting ewaste.  You
> > are 
> > welcome to extract your own magnets from those.
> > 
> > Rod
> > 
> > On 1/12/20 10:07 am, Tony Lewis via linux wrote:
> > > Hi all,
> > > 
> > > I have an urgent-ish need for some strong magnets; I'm hoping
> > > enough 
> > > of them can hold up strips of shadecloth onto our metal pergola
> > > for 
> > > temporary sun shelter.  If you have a stash of old hard drive
> > > magnets 
> > > like I used to, I'd be keen to see if we can do a deal.  I'm
> > > looking 
> > > for at least a dozen, but would take more for extra surety.
> > > 
> > > Many thanks in advance,
> > > 
> > > Tony
> > >