Re: [CAD_CAM_EDM_DRO] Anodizing Engravings

William when you epoxy paint aluminum using an acid etch of any kind you
must anodine first then prime it then put on the color. no prime no sticky .
I have 35+ years as a custom auto painter and sheet metal work steel and
aluminum . 6 months attemting to learn cad/cam i have a shoptask loaded with
all the goodies.
I am getting ready to start a new project shortley (soon as divorce is
finalized) it will be a custom one off hand formed aluminum body with a
removable carbon fiber top-with all machined and polished aluminum
suspension-components and lots more.- Dan (carbuilder) Pascoe-- Original
Message -----
From: "William Scalione" <scalione@...>
To: "Cad_Cam_Edm_Dro" <CAD_CAM_EDM_DRO@egroups.com>
Sent: Friday, October 06, 2000 10:21 PM
Subject: [CAD_CAM_EDM_DRO] Anodizing Engravings

> A while back I asked a question about painting engraved letters in
> anodized aluminum. Got a lot of feedback and performed a little test.
>
> I engraved 2 small aluminum panels, and immediately after engraving
> washed the panels with acetone to remove the cutting fluid. I then
> applied alodine to the engraved area and rinsed with water.
> A few days later I painted the engraved letters with some epoxy
> paint and let it dry. Sanded off the excess on the unengraved part
> and had them anodized. One was painted white, which was black
> anodized, and the other painted black which was clear anodized
>
> The black anodized panel with white lettering did not come out too
> good. The black dye didn't seem to soak into the metal close to the
> white paint, so there was a lot of small aluminum color blotches near
> the lettering. I'm unsure why this is.
>
> The clear anodized panel with the black lettering came out perfect.
> Looks very professional. This is the way to go if you need to do
> something like this. Just be sure to etch or alodine the metal first
> so the paint has something to grab on to. I guess the epoxy paint
> is impervious to whatever they use to etch the metal before anodizing.
>
> I will probably build a control panel for EMC using a keyboard circuit
> board and some switches using the clear anodized finish when I get time.
>
> Is it possible to hook up 2 keyboards to a computer just by wiring them
> in parallel, or does anyone have a circuit to do this? I really don't
> want to
> switch between the two.
>
> Bill
>
>
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>
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