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Author Topic: Anodized aluminium German Marin Expert Film Handler Posts: 227 From: Verbania (VB), Italy Registered: Jul 2001 posted 03-16-2003 06:17 PM                     I've heard about this technique and I think it's great for give permanet color to aluminium pieces. It's one of galvanoplasty techniques and I'm interested on it but I don't know where to start. Someone could tell me where can I put my first step? Thanks.  |  IP: Logged John Hawkinson Film God Posts: 2273 From: Cambridge, MA, USA Registered: Feb 2002 posted 03-16-2003 07:57 PM                     German, Ron Newman's Anodizing page is an excellent start; I've followed his directions to good results. I also suspect that Greg Mueller might be a local expert, but that's just a hypothesis . --jhawk  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 03-16-2003 07:59 PM                     Just be sure to seal the anodize well as if you don't it will fade and or become blotchy looking!! Mark @ CLACO  |  IP: Logged German Marin Expert Film Handler Posts: 227 From: Verbania (VB), Italy Registered: Jul 2001 posted 03-17-2003 05:15 AM                     Excellent web, Thank you John! I will Mark, Thanks  |  IP: Logged Greg Mueller Phenomenal Film Handler Posts: 1687 From: Port Gamble, WA Registered: Jun 99 posted 03-17-2003 09:21 AM                        My advice would be to not mess with anodizing. There's some nasty acid and electricity involved. The best advice I can give is to seek out a machine shop that has things anodized on a regular bassis and see if you can add your item to their's. That way you can get professional results and not have to pay the usually high minimum.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 03-17-2003 09:51 AM                     I agree with Greg on that one. It can literally be dangerous to mess with the stuff unless you are ttrained in doing such!! The local anodizing place, Quality Plating, I use here in SLC only has a 30.00 minimum. There are probably others that have even a lower minimum than that if U shop around. Mark  |  IP: Logged Kenneth Wuepper Phenomenal Film Handler Posts: 1026 From: Saginaw, MI, USA Registered: Feb 2002 posted 03-17-2003 01:13 PM                     Where could I look to get the frames and doors ( Aluminum ) anodized GOLD in color? The theatre is undergoing a total restoration and the original wood doors were brass coated over wood. In the 1950s those doors were replaced with the regular silvery aluminum type. The frames and doors are still useful but the color is not acceptable. Thanks KEN  |  IP: Logged John Hawkinson Film God Posts: 2273 From: Cambridge, MA, USA Registered: Feb 2002 posted 03-17-2003 02:11 PM                     I have to say, having done it, it is fun and pretty easy. By all means take care with the acid and electricity, but if you wear proper protection, I don't think there's a large concern. The web page in question has reasonable advice about safety. --jhawk  |  IP: Logged Greg Mueller Phenomenal Film Handler Posts: 1687 From: Port Gamble, WA Registered: Jun 99 posted 03-17-2003 03:23 PM                        Gold is a common color for anodizing. Larger anodizers should not have a problem with it. Probably the aluminum has been clear anodized (maybe not) in which case the old stuff will have to be removed first, adding expense. Big anodizing houses have very large tanks and it shouldn't be a problem getting large pieces like that done.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 03-17-2003 06:48 PM                     Most anodizers clean the metal first in a less concentrated bath of acid before it goes into the actual acid/dye bath for the anodization. The part should not change dimensions if all is done properly. Its possible that the old anodize may simply come off in the acid bath, check with your plater to see how it affects it. Also leaving the parts in longer than normal ads some durability to them but gives more of a matte finish on that particuluar part.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 03-17-2003 08:08 PM                     Somewhere on the film handlers forum there was a discusion on anodizing  |  IP: Logged Daryl C. W. O'Shea Film God Posts: 3977 From: Midland Ontario Canada (where Panavision & IMAX lenses come from) Registered: Jun 2002 posted 03-17-2003 08:18 PM                        That was here but there wasn't much discussed about it. Dave's description is good though.  |  IP: Logged David Stambaugh Film God Posts: 4021 From: Eugene, Oregon Registered: Jan 2002 posted 03-17-2003 08:25 PM                        Looking at John's excellent link on anodizing, one can only conclude that those "gold anodized" TV antennas at Radio Shack are really just dipped in some kind of poor-quality gold coating.  |  IP: Logged Chris Markiewicz Expert Film Handler Posts: 209 From: Glenaviegh, County Tipperary, Ireland Registered: Aug 2002 posted 03-17-2003 08:29 PM                     If I remember right from the old Radio Shack catalogs (when they still had prices on stuff) the antennas were "alodized" which is even better than anodizing  |  IP: Logged German Marin Expert Film Handler Posts: 227 From: Verbania (VB), Italy Registered: Jul 2001 posted 03-18-2003 07:32 PM                     Thanks for the advice about mess with chemicals. Is the Aling-O-Tron anodized? it has a great color coated!  |  IP: Logged

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