... isolation ... Yeah, from what I have read, it looks like two or three boards. The primary is just a long string of reistosrs. each about 3.5" long. ...
I made a couple PCB's awhile ago using the decal method and never want to go through that again!. Well anyway, I have access at work to a film printer (work at...
... I use NaOH solution for developing (very cheap) and a UV exposure unit I built myself, with pre-coated boards (positive-working resist). Negative-working...
If you are buying board from Mega then I would recommend their Microtrak board rather than the Fotoboard. It is the same price but it seems to be more tolerant...
From: Bob Weiss [mailto:BWeiss@...] ... Those negatives should work great. ... If you are in a reasonable sized city, you can get presensitized PCB ...
... products? ... I think the Decal method is really slow if you are taling about the self stick traces and pads. Toner transfer is the best cheap way to make...
Monthly Reminder, please read: Subject lines: Remember to change the subject line if you are straying from the original thread. Please change the subject line...
Homebrew_PCBs@yahoogr...
Oct 1, 2004 10:17 pm
7149
Just a thought here .... has anyone tried to use OHP Film for an Inkjet run through a Laser Printer ? This CompuColor OHP Film has a Special Coating that turns...
I am going to be mixing a batch of CuCl etchant today using the recipe found on the group site. Basically 2:1 3% peroxide:Muriatic Acid. I have read that I...
... It will probably speed it up. You aren't really using CuCl etchant, it's HCL and HO2, and can only be used once. If you treat it properly and get the ...
... recipe ... I have ... necessary? ... it's HCL ... get the ... As I ... HCL I've ... I store my HCL container inside of a 5 gallon plastic container with ...
I did this recently using the same recipe. It worked very well for the first etching session but a few days later, the etchant was "flat" (for lack of a...
... I was considering doing it outside, I have heard that it releases Chlorine... ... Where can I get 30% H2O2 from? Will they have it a home depot? I am ...
... In Seattle, I found it at a Lab Supply place in the phone book but it wasn't as cheap as others have reported ($15/4 oz or $40/gal). ... As others have...
... for bringing this up !! but during a few search's I come across some info that uses a UV Laser Diode in a DVD-R Burner & goes on about Photoresist being...
... The wavelength needs checking, to make sure it is correct. The power also needs to be checked, I don't think that UV LEDs will have enough power. Leon...
Agreed, glass is far better but... 31% HCl is sold in the US (probably elsewhere) in plastic gallon bottles. I've had one sitting in my basement from when I...
... Nylon is a commonly used plastic that doesn't survive in acid. Identifying plastics can be done with the burn test. To check if nylon burn some of it and...
... Same here. But after years (2 or 3) salt forms on the ouside of the bottle. also the plastic gets dimples. i put it in a cutoff "outer" bottle so i ...
... Inkjet run through a Laser Printer ? ... disolves easily when washed in water, ... method with an Iron or a Laminator.... comments ? ... I tried. The...
Hi, list I'd just purchased a small ultrasonic cleaner in EBay. I wonder as is the best liquid solution to do the job. I don't want to pay lots of money for...
On Mon, 4 Oct 2004 18:54:17 +0100, Joaquim Boavida ... Hi, could you please try if toner is cleaned off by ultrasonic? I try for ages to find someone with a...
I've started fiddeling around with photoresist spray and developing it using caustic soda, and have a few questions as the board is still not coming out 100% ...
... All the resist should have disappeared where it was exposed to the UV. ... Warm ferric chloride etches in less than 10 minutes for me with continuous ...
1.Clean board 2.Shake can before each use.(What I did not do the first few times) (in the dark with safe light) 3.Tilt board upright on 45 degree angle 4.Spray...
I did some thinking about this as well. I found on this list that some pre-sensitised PCB are sensitive in the range of 340 to 400 nm, and peak at about...
i'm planning to set up a pcb manufacturing company..... will anybody suggest me which process is better for the pattern transfer for pth boards screen...
