John Bercovitz asked:
Has anyone tried hard anodizing? I used to use tefloned hard anodizing
on 6061 for mechanical parts subject to sliding. It has a duller,
grayer finish. I wonder how it does in the weather. I have regular
anodizing, water sealed, on my 12 (30 cm) bowstring equatorial.
Tony Moss wrote:
I must admit that this is the first time I have encountered the term
'hard' anodising and the webpage referred to gave only general
information of the process.
Hard anodizing is still Al2O3, it's just extra thick. Can't get that
thickness by ordinary methods. I think by
tony moss wrote:
I must admit that this is the first time I have encountered the term
'hard' anodising and the webpage referred to gave only general
information of the process...
Tony, both anodize and hard anodize coatings are routinely used
here; they are quite different!
Almost
If your weather includes years of wind with dirt in it, or godferbid a
desert sandstorm, I speculate the extra thickness of Al2O3 buffered by
compliant PTFE should hold up better than many things against the
kinetic SiO2, which I think is probably lower on the Moh's scale.
John B
Hi John,I tried some home-made anodising a few years ago, and I also used some pre-formed anodised sheets (with photoresist already applied). One item I made was an Equation of Time plaque which has been on the south wall of my house for about 4 years and still looks exactly as it did when I
I have a 1-inch thick 6061 machined aluminum tooling plate mounted in a
polar plane in a local desert at 4500 feet elevation where the UV
exposure is extreme. This plate was hard black anodized and Teflon
impregnated when fabricated 23 years ago. Today, it is still shiny and a
slightly lighter
Larry McDavid wrote:
I have a 1-inch thick 6061 machined aluminum tooling plate
mounted in a polar plane in a local desert at 4500 feet elevation
where the UV exposure is extreme. This plate was hard black
anodized and Teflon impregnated when fabricated 23 years ago.
Today, it is still shiny
Hi all,
I tried the hard anodize with Teflon seal on my Elementary Dial
back in 1998. The dull finish is still like new except that it
has faded from the nice reddish gold toward gray now. It has
always had very nice reflective qualities and the shadow is very
distinct. My metal finishing shop
