Re: PCB Sensitivity to UV exposure?
The etch *mask* is UV sensitive. After etching, the remaining mask is
cleaned off, leaving just copper. Copper is not UV sensitive.
.
Relevant Pages
- Re: Home made PCBs.
... This makes copper etching faster and wastes less etchant as you only are removing the copper required to create traces. ... For very fine pitch traces/pads you want to make sure your transparency is printed so that the printed side is against the copper. ... The boards I have say for about 8m but I've done tests between 8m and 30m and the all produce about the same results but closer to 8 and you risk not removing all the mask which creates problems and generally requires more resist removal time or stronger solution. ... Agitation is necessary because it helps create a more uniform etch. ...
(sci.electronics.basics) - Re: Quick Sunstone query
... an hour(excluding etching time which varies) with equipment for under 100$. ... Most of the time the boards turn out good enough for prototyping if your not ... Apply mask to pcb. ... better than any etching machine I've seen before. ...
(sci.electronics.design) - Re: Etching artwork onto 3/16" copper plate
... I know nothing about etching, and even less about electronics, and I ... I have a 3" diameter disk of solid copper that is 3/16" thick. ... They're high-contrast black and white images without ...
(sci.electronics.design) - Re: Etching artwork onto 3/16" copper plate
... I know nothing about etching, and even less about electronics, and I ... help understanding resists and mordants and how best to use them to ... I have a 3" diameter disk of solid copper that is 3/16" thick. ...
(sci.electronics.design) - Re: copper etching
... H2O2 + HCl ... copper print with this, then it simply turns into. ... I have some practical experience with etching PCB's and my experience ...
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