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human39

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painting after etching?
« on: January 04, 2012, 07:28:47 PM »
I've been going through some youtube videos and noticed that some people paint their design after etching the glass.

Does anybody do this?  I'm curious what kind of paint you use?  I'd guess that it has to be non-toxic for obvious reasons.

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stickermonster

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Re: painting after etching?
« Reply #1 on: January 05, 2012, 12:35:58 AM »
enamel

bb
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Mr Peabody

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Re: painting after etching?
« Reply #2 on: January 05, 2012, 08:19:51 PM »
Here's a tip I read somewhere. I haven't tried it yet but...

When painting using enamel, whether it's sprayed or applied with a brush. With the mask still on obviously. Wait for the paint to dry and then take a rag with paint thinner or mineral spirits and wipe it over the mask. This, supposedly, breaks the seal between the paint and the edge of the mask. This way you can peal the mask off with out pulling the paint out of the etch. I don't think that you soak the rag, just make it kind of damp. Sorry I don't remember where I read it.

I plan on doing some tests at some point, when I get the time and it warms up some. Getting to cold to hang in the garage.

 :cheers:
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knucklehead

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Re: painting after etching?
« Reply #3 on: January 07, 2012, 08:18:00 AM »
Have to disagree with Peabody. Pull the mask as soon as possible. If your using enamel, like One Shot, etc, give it a few minutes to tack up, then remove. If it runs after you remove the paint, you're putting too much paint down.
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stickermonster

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Re: painting after etching?
« Reply #4 on: January 07, 2012, 01:16:49 PM »
i was just reading on ikonics website yesterday and came across this tidbit of information. the following is copied from their website...

"COLOR FILLING
Color filling is a popular way to add a unique touch to sandblasted
projects. Once the piece has been sandblasted, use pressurized air
to remove any loose abrasive from the etched area. The photo resist
will protect the area you do not want to color. A thin paint coating is
preferable since excess paint will dry over the top of the photo resist,
causing the paint to pull away from the etched surface during resist
removal."

i also agree with knucklehead on getting the mask of sooner than later.

bb
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Mr Peabody

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Re: painting after etching?
« Reply #5 on: January 07, 2012, 08:54:41 PM »
Well, when I get some time I'm gonna give both processes a shot. Don't recall where I read the tip but hey nothin to lose.  :cheers:
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knucklehead

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Re: painting after etching?
« Reply #6 on: January 08, 2012, 08:53:54 AM »
Now painting over the photo resist, seems like that would open a whole different set of circumstances. If I'm not mistaken, some of the resist have to be washed off. If so, this would dictate the type of paint one can use.

Peabody, you get a Letrilite unit, washout film, or self adhesive? I had one, went through ten sheets of washout film, finally gave up, and sold it.

Cutting Edge Sandblasting has a ton of info about using resist films.
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Mr Peabody

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Re: painting after etching?
« Reply #7 on: January 08, 2012, 11:15:15 AM »
Agree with you, photo resist is a different animal. I did get a a Letrilite unit and bought a roll of resist. Not the wash out film but the high tack kind.  I've played a very little bit with it. So my experience with it is 0. What little I have done, I washed the film off in warm water after I did the etch. It came off relatively easy. I've done some reading on the materials and subject. I'm still trying to dial in the exposure time and find a good printer to print the negative. What I have now just isn't cutting it. Can't get the black to be uniform with the current printer, so this part of the program is on hold. I'm just not going to waste material and time until I can get another printer.

I'm looking for recommendations on a good printer. If anyone has a good idea on a printer, give a shout out.

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stickermonster

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Re: painting after etching?
« Reply #8 on: January 08, 2012, 11:47:27 AM »
i am currently experimenting with all black ink in one of my wf1100's. in this manner you setup your artwork with 100%c 100%m 100%y 100%k for your black color. that way your printer fires all nozzles to make black.

bb
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knucklehead

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Re: painting after etching?
« Reply #9 on: January 08, 2012, 07:39:58 PM »
When I was messing with my Letralite, I got better results with my dye based printer, than my 1100. The screen printers say the same thing too. Why? Don't have a clue.

When I get my big printer set back up, I'll run ya'll some and see if they do any better.
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Mr Peabody

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Re: painting after etching?
« Reply #10 on: January 08, 2012, 08:33:12 PM »
Quote
setup your artwork with 100%c 100%m 100%y 100%k for your black color

Yep, tried that, I remember that you gave me that tip a while ago. It's the printer, HP 7580. I tried using transparencies, those didn't even come close to filling in. So I went with some Vellum, better results but still not black enough IMO. I can still see light coming through.

@knucklehead - Thanks  :cheers:
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human39

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Re: painting after etching?
« Reply #11 on: March 08, 2012, 07:36:41 AM »
I'm going to pick up some enamel paint this weekend and give this a try!

From what I gathered, you should paint when the stencil is still applied to the glass and even though there are some differences in opinions, remove the stencil material when the paint is still wet, maybe just a little tack.

Any other tips on what kind of paint to use or on process?
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rlvied

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Re: painting after etching?
« Reply #12 on: March 08, 2012, 08:36:48 AM »
For printing my transparencies I use a HP8600 set at photo paper glossy at my beat settings, I also use a Letralite unit and sr3000 washout film exposed for about 20 seconds. When I do paint I like to use One Shot with an air brush. I let my paint just get tacky then peel the film. That is just what works for me. Hope it helps.
                                                                        Bob
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human39

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Re: painting after etching?
« Reply #13 on: March 12, 2012, 09:23:35 PM »
is there any youtube videos that show this process?  My initial test was semi successful, but i smeared paint when I was removing the vinyl mask.

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Mr Peabody

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Re: painting after etching?
« Reply #14 on: March 13, 2012, 07:42:02 PM »
I had the same experience, plus I don't think I etched it deep enough. I think I kinda tried to rush the paint drying time by using a hair dryer. I'm sure that didn't help any. Still going to give it antother shot. Just not going to rush it this time.

I haven't really looked for a utube.

Btw the tip I posted earlier in the thread did not work for me, just made a mess and pulled the paint out of the etched part.
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