Photolithography Process 

"As you can see, its exactly one hundred and fiftee-" *Changes to 116*

Thank you for showing how its done in real life - with some stuff not working at their best and how to cope with it in order to do our work!

what is this thing that you have made? what will it be used for?

the guy that laughed in the background at 00:48 made me giggle, thanks for the video though

"It's just soapy water, haha!"

We removed the photo-resist so the part of the copper that wasn't exposed to UV can be etched away.

Amazing work man! Want to see so much more!

how does the material of mask effects the lithography?for example using plastic or glass

Can this be done for multi-layer pcb?

Hi Robin, I usualy warm up the UV-bulbs a few minutes, to become the bulbs warm.

Is there a reason why the light is yellow?

Hi, Robin, thank you for making this video, it is really useful, I just have a question, why you need to use the rope to inclose the mask?

So what exactly did you make? Was this a “chip” or something?

What exactly is Via Dep 4471 anyways? Doesn't sound very friendly.

Where did you guys get your transparency? Did you make it yourself?

Thank you, very useful and interesting video

you get the consumables for free? otherwise it will be a very expensive board :)

This video is very informative , Thank you . I just want to ask one question ,why did u removed photo-resist after it was exposed to UV ? can u please explain it.

Thank you , its very useful

Thank you!

Very nice video

"NOW, WE EXPOSE"

I just use a modified $20 laminator, far less photo resist film, no vaccuum bed just an exposure frame, cheap UV LED box and an etching tank with an aquarium heater and air pump for agitation o.0 No wonder Universities have to charge so much lol

Thank you. So many process steps and chemicals. Acetone is unpleasant stuff..all those solvsnts are toxic.

Nice

White balance! Please.

Just a lab work

lol @ 2:32

thats a lot of waste lamanent

did you know there are starving kids in china that cant afford photo resist? nor could they eat all of that photo resist you wasted!!! Idk where im going with this anymore. Also TIL: university of Oklahoma doesnt believe in collimation. The hotter it is, the quicker it goes... which is important because? oh yeah...undercut... can i have a degree? lol

everything is you buy Mask, cit, and all the process done by Machines Lithography.. What you did exactly only washing the plates by chemical...and that's your Research...