Archived posting to the Leica Users Group, 2006/01/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Philippe,
Wrinkle finish = Well, wrinkled.
Crackle finish = Like drying mud puddle, cracked into islands.
Hammered finish = Looks like hammered metal.
In short, three different finishes and visual effects. The ALPA finish
is a smooth wrinkle, ie a large proportion of the surface is flat, with
small, low wrinkles. Not the kind of effect I usually get with;
Krylon Wrinkle Finish, #3370 Jet Black 12 Oz Aerosol can
but possibly achievable with the right combination of the variables.
I can find no wrinkle finishes in the reference you cite.
Cheers,
"Keep pushing that paint can button and it'll come unstuck"
Jack C. Herron
8118 E. 20th St.
Tucson, AZ 85710
520 885-6933
----- Original Message -----
From: "Philippe Orlent" <philippe.orlent@pandora.be>
To: "Leica Users Group" <lug@leica-users.org>
Sent: Tuesday, January 24, 2006 12:10 PM
Subject: Re: [Leica] Painting cameras, the ALPA black crackle finish
> http://www.hammerite.com/uk/products/
> ps_dtr_metal_paint_colours.html#hammered
>
> is this what you mean?
>
>
> Op 24-jan-06, om 20:03 heeft Jack C. Herron het volgende geschreven:
>
>> Vick,
>> Wrinkle finishes, as opposed to crackle, which are something
>> different, are created by spraying a special paint, waiting a specified
>> time, say three minutes, then laying down another coat. The wrinkling
>> effect is caused by the solvents in the second coat softening and
>> expanding the partially dried first coat. This is really just a rigidly
>> controlled example of the failure one experiences when you do not allow
>> adequated drying time between coats of normal paint and get a
>> catastrophic wrinkle.
>> On the plus side, the paint, or I should say, a paint can be obtained
>> in aerosol cans from most full service paint stores or art stores,
>> usually in grey or black. For the effect the process is reasonably
>> uncritical. Making a reasonable attempt to follow the manfactorers
>> directions will result in a wrinkle of some sort, acceptable for normal
>> uses, ie, cases on electronic instruments.
>> On the negative side, obtaining a specific pattern of wrinkling is
>> critically dependant on many variables, all of which must be held to
>> close tolerances which are difficult in the home shop. The effect is
>> dependant, among other things, on the thickness of the first coat, the
>> drying time between coats, the temperature and relative humidity, the
>> thickness of the second coat, the temperature of the final drying (the
>> wrinkling can be hastened by heating in an oven) and the skill with
>> which an absolutely uniform series of coats is applied to a 3
>> dimensional object. Also it is likely that the paint that ALPA uses is
>> not the same as that commercially available.
>> I have to admit that I think it unlikely that one would succeed in
>> matching the ALPA coating, but--
>> Having said that, I would, and would encourage you, to go buy a
>> couple of cans, practice with some flat surfaces, cut some wood blocks
>> to approximate camera bodies, practice some more and see what you get.
>> You might get what you want, in which case, your problem will be to do
>> exactly the same thing again. You might also find a custom variation
>> which you like better, your own unique finish.
>> In any event, it is only a couple of bucks and should be a lot of
>> fun.
>>
>> Keep pressing the paint can button, it'll come unstuck!
>>
>> Cheers,
>> Jack
>> Jack C. Herron
>> 8118 E. 20th St.
>> Tucson, AZ 85710
>> 520 885-6933
>> ----- Original Message ----- From: "Javier Perez" <summarex@hotmail.com>
>> To: <lug@leica-users.org>
>> Sent: Tuesday, January 24, 2006 10:52 AM
>> Subject: RE: [Leica] Painting cameras, the ALPA black crackle finish
>>
>>
>>> I think it has something to do with painting in a hot surface or
>>> painting over a coat that reacts slightly. Voigtlander is now doing a
>>> crackle finish on the new bessas I think.
>>> Javier
>>>
>>>> From: <vick.ko@sympatico.ca>
>>>> Reply-To: Leica Users Group <lug@leica-users.org>
>>>> To: <idcc@kjsl.com>, <lug@leica-users.org>
>>>> Subject: [Leica] Painting cameras, the ALPA black crackle finish
>>>> Date: Tue, 24 Jan 2006 10:33:04 -0500
>>>>
>>>> To those who paint cameras, does anyone know how to create the ALPA
>>>> black crackle finish?
>>>>
>>>> I would love to have an M3 with that finish.
>>>>
>>>> Can this be done "at home"?
>>>>
>>>> regards
>>>> Vick
>>>>
>>>>
>>>> _______________________________________________
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>>>
>>>
>>>
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>>
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