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Posted: 2/3/2004 7:22:45 AM EDT
| I have a Colt lower that I would like to get re-anodized from it's original gray color to the newer black so that it matches my upper better. Which companies out there such as Colt, Bushmaster, Oly, etc do re-anodizing? Thanks for the help. |
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I'm wondering the same thing. Who does the nicest Anodizing?-Inquiring minds want to know. edited to add: I just spoke with Bushmaster and they referred me to Precision Coating of Titusville in Florida. No one awnsered so I was unable to get a quote, but the number is (321)267-1161. |
| I called DPMS and he said two to three months. My problem I'm having is that it's a Colt pre-ban with the sear block removed. I had Kurt remove the block and then plug the hole with an aluminum plug. It has been filed flush and looks good but Colt said it's not original so they probably won't touch it. The other problem is that the original finish has been stripped and bead blasted in preperation for anodizing. Maybe in the end I will have to do this one myself. I need to do more research and experimenting on Type III anodizing before I attempt it. As of now I'm only set up to do Type II. |
| Colt charges an arm and a leg. Also you will be lucky if you get back your lower in six months. Precision Coatings charges by the batch. You will pay the same for one or five receivers. Your best bet is to send it to DPMS to have it reanodized AND teflon coated. It is worth the two to three month wait for the price you will pay. |
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Quoted: Correct me if I'm wrong, but anodizing is the hardening process. The black color is the surface coating. Technically anodizing is the growing of aluminum oxide to the exterior of the raw aluminum surface. Type III (hardcoat) actually consumes half of the aluminum when grown properly. In other words if you grow a layer to .002" (2 mils) thick and it is a true hardcoat it will consume .001" of the aluminum and add .001" of aluminum oxide. When the layer has been fully grown it is removed from the acid bath and placed into a dye bath where the pores of the aluminum oxide absorb the dye. When this is complete the pores are sealed. Sealing can be done a few different ways but it all accomplishes the same thing...........sealing in the dye. So yes anodizing is the hardening of the aluminum but the color is integral with the coating. In other words you cannot remove the color without removing the anodized layer. |
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