user112
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Salut tuturor(hello to all)
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« on: February 05, 2008, 02:57:01 14:57 » |
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any sugestion?  ?what do you use? |
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ktl
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« Reply #1 on: February 05, 2008, 03:03:21 15:03 » |
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multi-layer, complex lay-out, fake via ...  |
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RsX
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« Reply #2 on: February 05, 2008, 04:47:53 16:47 » |
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what??  anything normal? |
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bbarney
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Uhm? where did pickit put my mute button
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« Reply #3 on: February 05, 2008, 05:18:18 17:18 » |
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Clear laquer spray paint works just fine
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Ever wonder why Kamikaze pilot's wore helmet's ?
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RsX
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« Reply #4 on: February 05, 2008, 06:18:05 18:18 » |
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how do you cover the parts of the board that doesn't have to be painted? like pads...  |
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« Last Edit: February 05, 2008, 06:26:49 18:26 by RsX »
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bbarney
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Uhm? where did pickit put my mute button
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« Reply #5 on: February 05, 2008, 06:56:04 18:56 » |
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you paint it before installing the parts and the paint burns off the tracks when soldering quite easy.
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Ever wonder why Kamikaze pilot's wore helmet's ?
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user112
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Salut tuturor(hello to all)
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« Reply #6 on: February 05, 2008, 07:54:41 19:54 » |
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« Last Edit: February 09, 2008, 08:55:16 20:55 by user112 »
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rtm
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a.k.a. klug
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« Reply #7 on: February 05, 2008, 08:05:17 20:05 » |
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I used lacquer for furniture. Few hundred of devices are working under near open sky for 6 years.
Try few lacquers and find suitable one.
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jzaghal
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« Reply #9 on: February 07, 2008, 06:23:51 06:23 » |
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Hello,
I use thick furniture lacquer. Cheap and good. A small can will last very long.
Usually comes in a metal can. Close it tight.
Bye.
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MAXPAYNE
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It's a little funny......
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« Reply #10 on: February 08, 2008, 12:49:55 00:49 » |
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Hello,
I use thick furniture lacquer. Cheap and good. A small can will last very long.
Usually comes in a metal can. Close it tight.
Bye.
Can you attach some good resolution photo here with lacquer ? |
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Whats the Craziest Project u have done lately...?
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mylogin
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« Reply #11 on: February 08, 2008, 05:45:34 05:45 » |
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the Plastik 70 from Kontakt Chemie is used in company products.
Acrylic lacquers
Lacquers using acrylic resin, a synthetic polymer, were developed in the 1950s. Acrylic resin is colourless, transparent thermoplastic, obtained by the polymerization of derivatives of acrylic acid. Acrylic is also used in enamels, which have the advantage of not needing to be buffed to obtain a shine. Enamels, however, are slow drying. The advantage of acrylic lacquers, which was recognized by General Motors, is an exceptionally fast drying time. The use of lacquers in automobile finishes was discontinued when tougher, more durable, weather and chemical resistant two-component polyurethane coatings were developed. The system usually consists of a primer, colour coat and clear topcoat, commonly known as clear coat finishes. It is extensively used for wooden finishing
you can use the spray lacquers from DIY home finish store, lots of them to choose. all works well. the Acrylic lacquers for furnitures are cheap and good.
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otter
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« Reply #12 on: February 08, 2008, 10:28:21 22:28 » |
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What are you trying o protect it from? From being copied or to protect from moisture/dirt etc?
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hemlig
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« Reply #13 on: February 08, 2008, 11:35:18 23:35 » |
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I think they want to protect the copper layers from oxidation after etching.
(prevent air to reach the copper surface)
To do that a thin coat of paint from a spray can is enough. I've used liquid plastic in high voltage circuits.
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If it work don't fix it!
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maddoc
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« Reply #14 on: February 09, 2008, 12:26:47 00:26 » |
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I have very good results protecting the copper from oxidation by using the special compound used in copper pipe soldering.
It is a grey paste, you have to paint it with the included brush over the whole PCB and then put it with the compound upside so the not painted side sits on a flipped over hot iron and leave it there until the paste gets dry, 3-5 minutes. Wash with water and sponge and dry it out.
The PCB will be nicely covered with solder, looking great and ready to put SMD's on it.
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user112
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Salut tuturor(hello to all)
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« Reply #15 on: February 09, 2008, 08:19:52 08:19 » |
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What are you trying o protect it from? From being copied or to protect from moisture/dirt etc?
from moisture/dirt and I think Plastik 70 is a good idea I find transparent one. It is any posibility to make it green |
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jader
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« Reply #16 on: February 24, 2008, 09:17:30 09:17 » |
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does the laquer make the solder not flow as well?
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mylogin
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« Reply #17 on: February 24, 2008, 04:46:58 16:46 » |
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does the laquer make the solder not flow as well?
You should apply the laquer after you solder all the parts. most of the laquer is not a good solder mask, it will melt if you put the solder on it, also if you put the solder on it to solder the parts. it might have bad contacts, the melting gas is bad for your health too. |
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Mike G
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« Reply #18 on: February 26, 2008, 05:59:19 17:59 » |
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I use plastik spray to cover it
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mcr
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« Reply #19 on: February 27, 2008, 01:38:23 01:38 » |
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What procces name is when the PCB turns green and how can i do it?
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pomidor
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« Reply #20 on: February 27, 2008, 07:10:46 07:10 » |
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2mcr
Do you mean solder mask? If so, I heard that some people used photoresist spray with thermohardening (150 C) for this purpose at home.
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