karesz said:Hi Rob,
I dont no how you worked & I didnt make self a photochemically prcessed PCB, but friends told me, that the resolution is better (you will have finer lines) if the emulsions layer of your film will direct contact the copper surface_I think for that you have before mirrored to print...
K.
Yes, I believe it too.Rob B said:[...I think the limiting factor for this level of PCB production is the quality of the artwork print. Even with high-end copiers/printers toner ends up where I don't want it....
karesz said:Hi,
Can you tell pls. more over your source, link datasheet?
K.
karesz said:Hi,
What seems me to be a problem with an UV-LED LightBox;
1,
its needed deepness to stray the light for enough "monotonicity...
2,
I dint no, but if its possible to stray with a milk plexy i.e., it will be similar low profile as an incandescent lamp box...
3,
In my opinion is very important that thefilm is thightest on the glass, especially by so fine lines as fin pitch PCB has!
It need than a vakuum adapter as by "professional" solutions_ not very easy & cheap. :-(
4,
If you know some older (HP & others) X-Y Plotter, their have had an electrostatically charged "table" with _I think so 1..200V_it worked (instead of more complexer vakuum table) good for normal paper- maybe for films too?
5,
Dont forget pls a good controllable timer is to build in...
K.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?