On 4/13/2014 3:49 PM,
cl...@snyder.on.ca wrote:
> On Sun, 13 Apr 2014 10:35:51 -0700, RobertMacy
> <
robert...@gmail.com> wrote:
>
>> On Sun, 13 Apr 2014 10:02:11 -0700, nestork
>> <
nestork...@diybanter.com> wrote:
>>
>>>
>>> Moistening the suction cups will help them keep the suction by filling
>>> the microscopically small roughness in the rubber cup. However, water
>>> evaporates and once it does, you're back to square one. I would use a
>>> very light oil like WD40 on the rubber cups and/or glass before applying
>>> the suction cups. The oil will fill the roughness just like moisture,
>>> but it won't evaporate.
>>>
>>
>> Won't the WD40 deteriorate the plastic cup, at least whether it will or
>> not is unknown.
>>
>> Will mineral oil, olive oil, or such work?
> WD40 is a crap-shoot at best. It evaporates like water, and depending
> what the cup is made of, can seriously degrade it in short order.
>
> Glass shops use glycerin on their rubber installers cups
25 years and I never saw a glazier use it. I never worked for a company
that even stocked it. Woods Power Grips last a LONG time w/o any
"conditioning" needed. The vacuum pump fails way before the rubber