apple Lisa2. Keypads

steve shumaker shumaker at att.net
Fri Dec 24 14:14:59 CST 2010


does anyone have an actual measured diameter of the pad available?

steve

On 12/24/2010 7:58 AM, Ray Arachelian wrote:
> On 12/23/2010 10:21 PM, Terry Stewart wrote:
>    
>>> But, just out of curiosity, where exactly would you order keypads from?
>>>
>>>        
>> Erik's marketplace right here
>>
>> http://marketplace.vintage-computer.com/auction_details.php?name=Replacement-Sol20-and-others-Keyboard-Foam-Pads&auction_id=108819
>>
>>
>> They would need shipping to New Zealand which would add to the cost.
>> Also I have THREE keyboards I'd like to repair not just one.
>>      
> Oh, I see, these are pulls from another old keyboard.  Too bad.
>
>    
>> Hmmm...ok, your letter has convinced me.  It SEEMS easy enough, and
>> it's not like this has to be done immediately.  I can snatch a few
>> hours here and there as time allows.  However I'm sure it will take me
>> more than an afternoon or two so I'm not convinced it's "less trouble"
>> (-: .  More satisfying and permenant in the end though maybe.  I'd
>> certainly replace the foam as most of it is degraded really badly.
>>      
> I suppose if you could build some sort of circular cutting device that
> has the right diameter, it would go a lot easier, but that seems
> difficult.  You'd need to find a metal tube of the right size and
> sharpen it to a blade, then rotate it against foam glued to a
> mylar/taped aluminum foil layer.  (Or against foam/taped aluminum
> separately and then glue.)
>
> I suppose mylar balloons might work if flattened and glued to a thin
> stiff piece of plastic also?
>
>    
>> At work we have some largish corkborers for punching out agar plugs.
>> One of these MIGHT just be a suitable size, which should make the
>> process a lot easier.
>>      
> That would work.  Perhaps there's some dremel bit sets that would
> include this kind of cutting tool?  I did find a round cutting bit in my
> collection, but it's specially made to cut round holes in doors for
> locks.  Way too big.  But if you can find the right sized tool, or make
> the right sized tool it would work.   I did mine all by hand with an
> Xacto blade, which is a bit boring and makes for rough work.  In some
> cases the geometry of the aluminum rounds failed to work, etc.  But if
> there was a tool to get them all to be the same shape/size, it would
> work much better.
>
> http://www.amazon.com/Fiskars-93807097-Circle-Cutter-Replacement/dp/B0006HUJ0S/
>
> Something like the above might work, but I'm not sure about the diameter
> - the 1" minimum this thing does is too big.
>
> Hmmm, perhaps cutting a tin soup can, then sharpening the edges with a
> file and curling it on itself until it's the right diameter on the sharp
> end, but makes a funnel on the other end, then attaching the funnel end
> into a wooden handle could make the right tool.  Problem is the edge
> would need to be sharp and that kind of metal is a bit too soft.
>
>    
>> I'll let you know how it goes.  I'l probably get onto it in
>> Mid-January after the holiday season.  I've a few family commitments
>> before then.
>>
>> Much obliged for the advice.
>>      
> Sure, anytime.  If you do find a tool, or are able to make one, let me
> know the details of what worked so I can add it to the FAQ.
>
>    
>> Terry
>>
>>      
>
>    



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