Archived posting to the Leica Users Group, 2006/01/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]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 >>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >