Faceplates (etching aluminum?)

[Martin Czech]

> No, but I have a restroom :) No, but seriously ... I wish I had, but
> instead I have made a box (1m x 1m x 1m) with one of the sides missing.
> After preparing the alu for coating I place some old newspapers at the
> bottom of the box and sprays water in the box (using a 'device' with a
> pump. I think it used to be a hair spray of some sort). The fine water
> particles clings to whatever dust particles there may be in the box.
> Finally I place the alu at the newspapers and apply a thin layer of

Good idea!
I suppose the open side is to left or right, not to the top ?
This way , nothing from above can fall on your resist.
The water makes dust particles stick to the walls of the box ?
So, the walls are wet after the water procedure ?
Or does it also get particles out of the air ?


By the way, how do you protect the backside of the panel against etching?
I suppose that there is no resist on that side, and also not on the 
other small 4 sides of the panels. 

> > p.s.: I know a company that uses blue photoresist to coat alu panels.
> > Looks cool (blue & "white" alu), also not very sensitive to scratches.
> 
> You mean very sensive to scrathes, right ?

NO, NOT SENSITIVE to sratches, also to my surprise.
 

m.c.