Re: AW: tried hard anodizing?

Hi Hannes,The pre-anodised aluminium sheets that I have used go by the trade name of Gedakop in the UK. The manufacturers anodise aluminium sheets (of various thicknesses) by the normal methods but don't seal the pores. They apply a photoresist layer and then put on a black protective plastic

Re: tried hard anodizing?

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

Re: tried hard anodizing?

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

Re: tried hard anodizing?

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

AW: tried hard anodizing?

(german) wikipedia states that the process of hard anodizing uses cooled electrolytes, so much higher current can be used. usually the protective layer is 25-50µ, half of which adds to the thickness of the piece. with very pure alloy layers of 200µ can be produced. I wonder if the thicker

Re: tried hard anodizing?

-Original Message- From: hannes [EMAIL PROTECTED] To: Sundial Mail List sundial@uni-koeln.de Sent: Thu, 18 May 2006 19:25:59 + Subject: AW: tried hard anodizing? (german) wikipedia states that the process of hard anodizing uses cooled electrolytes, so much higher current can be used. usually

tried hard anodizing?

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. Fine weather

Re: tried hard anodizing?

Regards,John D ---[EMAIL PROTECTED] wrote: 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 t

Re: tried hard anodizing?

the grains but, if you don't mind the resulting roughness, lasts many years. Sun is a tough environmental factor; ask the Martians Larry NASS [EMAIL PROTECTED] wrote: Has anyone tried hard anodizing? I used to use tefloned hard anodizing on 6061 for mechanical parts subject to sliding

Re: tried hard anodizing?

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

AW: tried hard anodizing?

John (D), you talk about pre-anodised sheets with photoresist applied. is this anodising applied or removed by a photographic process? how does it work? how do you make the color change? sounds like a very intresting material for our purposes! hannes -- hannes kühtreiber [EMAIL

RE: tried hard anodizing?

PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Wednesday, May 17, 2006 6:54 AM To: sundial@uni-koeln.de Subject: tried hard anodizing? Has anyone tried hard anodizing? I used to use tefloned hard anodizing on 6061 for mechanical parts subject to sliding. It has a duller