Re: ATM Finishing a Hastings Tube???

["Ron Newman" <ronaldn@ptd.net>]

Hi Pat,

I have done that many of times as a pre step before anodizing. It gives the
aluminum a very nice uniform matt look to the surface. Mix up 1/2 a
container of red devel drain cleaner in a 5 gallon bucket of water. Should
take only 5 to 10 min to etch a nice surface due to you having  already
sanded the part. If you use warm water it is even faster.

Ron

Anodizing how to page--
http://www.focuser.com/atm/anodize/anodize99.html



----- Original Message -----
From: "pbunn" <pbunn@patbunn.com>
To: "atmlist" <atm@shore.net>
Sent: Thursday, January 15, 2004 10:27 AM
Subject: ATM Finishing a Hastings Tube???


>
> I am building a small 5" scope using a Hastings 7" aluminum tube.  I am
> contemplating sanding it with 320 grit inside and out and etching it in a
> Lye solutionj. Has anyone tried this. I have done it with aluminum
> electronic chassis and panels and it worked OK.
>
> Any other ideas?
>
> Pat Bunn
>
>
>
>