Aldi Ultrasonic cleaner

On offer again next Thursday for GBP17:
http://www.aldi.co.uk/uk/html/offers/offers_week02Thursday10.htm

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IMO save your money - mines shite

 

SteveH rates his AIUI

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Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3
Tyger, Tyger Burning Bright (Remove rust to reply)
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Triumph Sprint ST 1050: It's blue, see.
www.cuore-sportivo.co.uk

 

Cleans watch straps / cases, jewellery, windscreen washer jets, CDs and
my glasses.

I think it's a great bit of kit, but YMMV.

(My usual solution is warm water with a little drop of washing up
liquid)

 

You have to be extra careful not to get water on the switches. Mine failed,
but was revived after having a rest in the airing cupboard.

 

Mine is pretty good - so good it eventually dislodged the coating from
my spec lenses.

 

Does it remove the whole coating, cos mine have patches where it's worn
through and I want to get the fucking lot off so I can see properly
again.

 

Mine came off in patches as well, so I continued with the ultrasound
treatment intensively until it was all loose enough for me to scrape
gently with a fingernail to get the whole lot off.
This was pretty successful but the plastic underneath was so soft it
left faint scratches that made the specs not really up to what I need.
As the lenses were already several years old it was not as if I had
damaged a shiny new toy so it did not hurt too much to get them
replaced.

 

Opticians strip the coatings using hydrofluoric acid

http://optochemicals.com/products/info_ar_stripper.htm

 

Ouch.

 

Brilliant, thanks, so I can have them recoated or simply stripped
professionally.

That's good news

 

<quote>
polycarbonates or their coatings may get damaged
</quote>

--
Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3
Tyger, Tyger Burning Bright (Remove rust to reply)
116 Giulietta 3.0l Sprint 1.7 GTV TS GT 3.2 V6
Triumph Sprint ST 1050: It's blue, see.
www.cuore-sportivo.co.uk

 

Yes, my optician does the de-coating in-house, if you want them
re-coating you'll need a spare pare of bins 'cos they have to send them
off to be done in a lab.

 

Would it be normal to give the lenses a little polish before they
re-coat them, or would minor scratches doom them to the bin?

 

I'll tell you next week ...

 

OK - thanks.

 

That's what I use and it is very efficient.

When doing the maintenance on our SCUBA regs I put hot clear pickling
vinegar in the cleaner and put the stripped bits in to it. Works a
treat.

 

Hi Gid, and the same to you and Suzie

 

Ah, when I jbexrq at Murex we hfrq that stuff in 30%, 60%, 90% solutions
and, anhydrous. Used mostly for dissolving tantalum and niobium out of
the crushed ore.

You really, really didn't want to get splashed with it, you xabj.

A splosh from a mixer hit my visor, ran down it and soaked into my overall.

The stinging prompted a look, and a rapid irrigation on the irritation,
down to Nursie, who undemined it with several hypodermic jabs, and
raised the skin on a bubble of sodium glutamo glutamate. (Or potassium -
can't unforget now, forty years on.)

Don't go there innit.

 

I expect they an reform them - but I dunno if it's cost-effective.