Author Topic: Laserable Paints  (Read 2312 times)

Agastar

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Laserable Paints
« on: December 07, 2016, 10:02:34 AM »
This has been a side project for some time now and recently I started messing around with it again. The process involves a ball mill for mixing the paints so it doesn't progress very fast but it does allow for doing several projects at once.

The goal for this project has been to make paints that can be set or cured with the laser. Some of the recipes are meant to be conductive paints while others are meant for making PCBs. The paint I've been working with lately has been the etch resist paint and since I got some decent results, I thought I'd share some pictures with you all. The others I would like to do are the solder mask and hopefully the paint for text and graphics over the solder mask paint.

This recipe was attempt number 2 and while the consistency was spot on for what I was trying to achieve, it had poor adhesion. The batch I have in the ball mill now, I'm hoping will adhere better.

nottingham82

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Re: Laserable Paints
« Reply #1 on: December 07, 2016, 07:29:36 PM »
seems pretty ridiculously awesome.
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beikeland

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Re: Laserable Paints
« Reply #2 on: December 07, 2016, 11:28:00 PM »
Interesting! Is the drying and hardening independent processes?

Agastar

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Re: Laserable Paints
« Reply #3 on: December 08, 2016, 09:51:28 AM »
Thanks! It's coming along fairly well. A few more tweaks to the recipe and I should be there.

Agastar

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Re: Laserable Paints
« Reply #4 on: December 08, 2016, 10:03:03 AM »
Yes, the drying and hardening are independent. Just let it dry after you apply it and it sticks to the board until you wash it off with water. The heat generated from the laser hardens it and should bond it to the copper. Of course the bonding part is the problem that I'm adjusting the recipe for.

Basically I'm taking powder coat and turning it into a liquid paint but the additives I'm adding to make it into a fluid paint is keeping it from bonding. Once I find the right ratio it should bond good enough to withstand the etching process and then be able to be wiped off with a solvent. I'm hoping to use alcohol for removing it but worst case would be acetone.

Koskee

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Re: Laserable Paints
« Reply #5 on: August 19, 2017, 06:11:49 PM »
Very interested  to hear how this is going. I've found similar products but they are $120+ and only sold by one retailer based in Australia, last time i checked..

ThothLoki

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Re: Laserable Paints
« Reply #6 on: July 29, 2019, 02:12:46 PM »
Yes, the drying and hardening are independent. Just let it dry after you apply it and it sticks to the board until you wash it off with water. The heat generated from the laser hardens it and should bond it to the copper. Of course the bonding part is the problem that I'm adjusting the recipe for.

Basically I'm taking powder coat and turning it into a liquid paint but the additives I'm adding to make it into a fluid paint is keeping it from bonding. Once I find the right ratio it should bond good enough to withstand the etching process and then be able to be wiped off with a solvent. I'm hoping to use alcohol for removing it but worst case would be acetone.

any update on this?
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Stonemull

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Re: Laserable Paints
« Reply #7 on: August 07, 2019, 12:18:34 AM »
The film based resists work ok if you have a laminator.
The etching laser is not ideal wavelength/size so I ended up with a 50mW 404nm laser for etch resist exposure but it will do the job.
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ThothLoki

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Re: Laserable Paints
« Reply #8 on: August 07, 2019, 08:25:21 PM »
The film based resists work ok if you have a laminator.
The etching laser is not ideal wavelength/size so I ended up with a 50mW 404nm laser for etch resist exposure but it will do the job.

Have a link?
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Stonemull

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Re: Laserable Paints
« Reply #9 on: August 13, 2019, 01:51:54 AM »
for which part my man, I did a fairly comprehensive write up in I think the projects section, will have a look later, I think i got the film from aliexpress but cant see it on my orders, a search there for "photoresist" comes up with heaps.

eg https://www.aliexpress.com/item/32807962511.html

the laser I used was a 50mW 405nm line laser with the line lens removed. I also hacked it to add TTL capability which was quite simple, details of that are also here somewhere..

i think it is this one https://www.aliexpress.com/item/32666139199.html


ok here is one of threads, the last messages on http://benboxlaser.us/index.php/topic,1902.msg31281.html#msg31281 including links to where i got the bits.

and another area of that thread with a link to an imgur page showing some of the TTL mods.

http://benboxlaser.us/index.php/topic,1902.msg23757.html#msg23757




« Last Edit: August 13, 2019, 02:02:04 AM by Stonemull »
A3 Eleksmaker 2500mW
Solidoodle V2 Pro
Wanhao I3+ touch
Hacked Roland DXY-880
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CNC Plasma (work in progress)

ThothLoki

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Re: Laserable Paints
« Reply #10 on: August 13, 2019, 07:40:54 PM »
Sorry
I want something I can laser and make it harden. A paint preferably.

I am looking to have some paint harden onto metal.
Laser: A5 2000mw with L7 Board / A3 2500mw PWM with Mana SE -- All using T2Laser
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ggallant571

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Re: Laserable Paints
« Reply #11 on: August 13, 2019, 08:49:39 PM »
When etching glass I have had some success with paints made for wood stove or automotive exhaust duct work. They appear to have a metallic ingredient that melts and fuses to the glass. Getting a repeatable recipe has been elusive and I can't tell if it is on the surface or in a fissure. Are you looking to paint the entire surface and remove the unwanted or deposit an image?
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ThothLoki

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Re: Laserable Paints
« Reply #12 on: August 14, 2019, 12:27:31 PM »
Yes. I would like to throw some paint on, say a steel cub, laser the paint and wash off the unlasered paint.
Laser: A5 2000mw with L7 Board / A3 2500mw PWM with Mana SE -- All using T2Laser
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ggallant571

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Re: Laserable Paints
« Reply #13 on: August 14, 2019, 03:30:12 PM »
I would also like to do that. I await your posting show the great results.
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ThothLoki

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Re: Laserable Paints
« Reply #14 on: August 15, 2019, 08:38:31 AM »
Hahaha. You and me both. I would love to find some of that paint that is not $50 for 5ml
Laser: A5 2000mw with L7 Board / A3 2500mw PWM with Mana SE -- All using T2Laser
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