Photoresist Anti-etching Blue Paint

[elektryk]

Hi, anybody try it for make PCB?
There is a few seller on ebay, who sell this, for example 100g Photoresist Anti-etching Blue Paint for DIY PCB dry film replacement | eBay

http://www.ebay.pl/itm/100g-Photoresist-Anti-etching-Blue-Paint-for-DIY-PCB-dry-film-replacement-/190741561459?pt=LH_DefaultDomain_0&hash=item2c69154073

What is better, this or photoresist film?

EDIT:

Please use link in the code window.

 

[elektryk]

I have ordered it, we will see whether it works.

 

[elektryk]

It works fine with Nitro diluent, I'm using Seno 4007 developer after exposing.

 

[richie00boy]

This kind of stuff used to be used years ago in the old etch resist pens. I used one to do my first PCB about 24 years ago.

Soon moved onto transfers then printing transparancies and UV exposure.

 

[JMFahey]

It´s not the same.
The one you mention was used to directly draw the tracks and pads by hand.
This one is applied to all of the copper surface, then the image is transfered photographically, using a negative.

 

[richie00boy]

Ah ok, couldn't get the link to work.

Now used the link in the code window. Spray on resist is bad enough, but this looks even worse. Fair enough the poster got a result, but I wonder how intricate his PCB was.

 

[gmphadte]

Off topic post

Ah ok, couldn't get the link to work.

Now used the link in the code window. Spray on resist is bad enough, but this looks even worse. Fair enough the poster got a result, but I wonder how intricate his PCB was.

On your website, RELAY IS MISSING in the soft-start schematic

Gajanan Phadte

 

[richie00boy]

Thanks Gajanan, but R5 depicts the relay coil.

Sorry for the off topic.

 

[elektryk]

Ah ok, couldn't get the link to work.

Now used the link in the code window. Spray on resist is bad enough, but this looks even worse. Fair enough the poster got a result, but I wonder how intricate his PCB was.

This resist isn't as bad as looks, here is PCB with SSOP28 package (it was made with one layer printed on transparent foil on inkjet).

Using airbrush gives better results, this PCB isn't the best which I have etched, because this one wasn't painted precisely, scratches degrades PCB quality.

 

[Hazukiwolf]

Nitro

Can you tell me what the nitro diluent is that you used? sorry but I'm new at this and have no clue.

Thanks

 

[cebrax]

Thank you for the results you've shared, elektryk.

I have bought this thing from eBay, too. I will try it when I buy a brush from the store.

Did you make any other trials with this paint? For example, did you try painting it precisely? Or did you try using laser printer for printing to the transparent foil?

 

[elektryk]

Yes, I have been testing laser printer and transparent foil but result was much worse.

With precisely painting is possible to achieve 0.3mm routes then the perfect print and a good developer (sodium metasilicate) is required.
You can try laser printer but not every printer and foil will give good results.

Nitro diluent is diluent for nitrocellulose paint.