Dry flim photoresist
hi viki if you plan on doing a group buy for photoresist count me in
hi viki if you plan on doing a group buy for photoresist count me in
Make sure all the lead on the IC are intact if you buy IC suck on card board with cello tape usually ATmega smd ic are sold this way other ic come in tubes or small plastic covers
The details of how to make PCB in the toner transfer method is in post number 29. Attached please find the
address and phone number of the dealer in Mumbai.
You can order them on the phone. If you need few sheets
give me your address I will send you. I remember I
offered you before also, but you did not take.
Roushon.
Attachments
Nail polish is the easiest to get and store. NC paint is also good but you need to buy larger quantities which can also dry up pretty fast. You can thin nail polish with it's thinner ( expensive) or buy yourself a 450 ml bottle of Amyl Acetate ( bp 149 deg C ) from the chemical market and it will last you a very long time. Also useful to clean the board after etching. Acetone is also good but evaporates too fast ( bp 56 deg C ) .
I found that one has to go over the Laser printer ink as it contains pin holes. Maybe with some printers the ink is thick enough.It's a good idea to check for gaps and pin holes before etching and touch it up. If I make a board I go over all tracks with slightly thinned nail polish just to be on the safe side!
I found that one has to go over the Laser printer ink as it contains pin holes. Maybe with some printers the ink is thick enough.It's a good idea to check for gaps and pin holes before etching and touch it up. If I make a board I go over all tracks with slightly thinned nail polish just to be on the safe side!
Yes it does.
Honestly I must say one of the most incredible electronic gadget I have ever bought.
My useage is so far only upto 1 channel and I tracked oscillations upto 50 mhz in my amplifiers.
Sadly Iam not yet skilled enough to use it like a pro, I have to keep a calculator handy.
There are lot of features which are still alien to me.
Just try using any paper you can find (eg. magzines,Leaflets,catlogs, photopaper) use the one which give you best results. The is no definative guide to the tonner method its trial and error. If you want professional manufactured PCBs try seeedstudio.com, $5 for 5x5cm pcb 10pcs and 25 for 10x10cm 10pcs
Dear Roushon, Can you post some pictures of PCB's you have made that have very fine track. Regards,
I said, every details of making is described (by me) in post no 29 in this very thread. Use hydrogen peroxide+hydrocloric acid as etchant, very nice. First dip the board in hydrocloric acid and then drip hyprogen peroxide into it and stir the solution.
I am not selling paper. You may contact the seller in Mumbai as I posted above. Few sheets I can send free, but not to too many people. Send me your address.
Roushon.
Check post no 23. I have made around 50 different types
of double sided pcbs (with SMD parts) by toner transfer
method using chromo paper. The paper is thin and one
side glossy. I have tried many different types of
papers and found this is the best. Take the laser print on
the glossy side. Take the darkest possible print. After the
toner transfered dip the board in water for at least 10 minutes, then
the paper releases the board easily.
Roushon.
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dear sir,
plz send me .i w'll pay you money as u required.thanks my address:-
Masood Ahmad Alvi
353/7,N.L.C.(new labour colony)
kidwai nagar,kanpur 208011
e-mail_ khan.shahid251@gmail.com
The problem is,'Any' kind of papers tend to bloat the ink which makes the track smudged and loose sharpness.I had once used some kind of paper,gosh the the toner wont transfer to copper no matter how much I heat.Hence the search continues.
I havent tried the Kapton yet .
Guys I wanted to change my electronics into SMDs.can you suggest place or websites in India whom deals with retail smd components ?
It would allow me to avoid lot of through hole drilling too lolz.
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No money required! I will send you few sheets. Further, do not post your personal address online. Send PM instead.
Best wishes
Roushon.