80% Lower Anodizing ? ?

[Seesm]

For extended fire of a m-16 I get the hard ano but for what we all use these for no ano is fine... Most of the lowers I have looked at do not look like they are even anodized with type 3 (hard) just saying.

[ElectronWrangler]

On the subject of anodizing your own lowers, does anyone know offhand the surface area of a stripped lower?

[craneman]

Hey ElectronWrangler, I can't give you an exact area for anodizing calculations, but my anode was a strip if .125" thick, 3in. wide, 6061 aluminum bar stock that was long enough to reach the top of the 5gal. bucket on both sides when bent in a "U" shape. The anodizing was with a 12v battery charger (non-automatic) set at 35 amps (start low and ramp up the amperage to 35) and it took about 50 min to anodize. This was with 4 gallons of the 15% acid and distilled water mixture, and temp was regulated by ice water in a tub that the bucket sat in and a few floating water bottles with ice in them. The temp never exceeded 70deg.F. Worked liked a charm. Beautiful anodizing.

[ElectronWrangler]

thanks craneman
EW

[VaderSpade]

On the subject of anodizing your own lowers, does anyone know offhand the surface area of a stripped lower?

I've seen .58 somewhere but I can't find it or confirm it.

[ucb]

The mount of force and lack of rotation from the fire control pins and selector won't ever be a real issue when it comes to fatigue wear on those parts, anodized or not