Anyone tried this? I feel foolish for not thinking of it.

Steve Greenfield AE7HD http://www.linkedin.com/in/stevenjgreenfield

--
Steven Greenfield AE7HD

There are a number of similar YouTube videos of this. I'm currently experimenting with doing the same thing, but in a different way. I bought a 9.7 inch 2K lcd with an HDMI board that I can use as a second monitor. I going to remove the backlight and replace it with a UV source. Print Eagle to a file then display the file on the lcd and use it to expose the board. This should allow a lot more flexibility from a software point of view. Also, the lcd on a resin printer has a (relatively) thick piece of glass on the front to protect the screen that could cause some refraction problems. Hopefully I'll get to try this in the next week or so.

Mark

At 10:44 PM 12/27/2021, you wrote:

Anyone tried this? I feel foolish for not thinking of it.

The fastest way to make crisp PCBs at home!

Steve Greenfield AE7HD

--
Steven Greenfield AE7HD

Virus-free.

#36866

I don't see the point of that. 
UV lamps are cheap adn so are printer transparencies.
My cheap inkjet can do 4800x2400DPI and good photoresist is cheap.

Compared to that, 3D printer is very crappy option.
I was thinking more along the lines of reworking something like Epson's
cheap A3+ Workforce WF-77xx printer or multifunction into printing
directly on PCB panel. 

For me, that would be a meaningful change.
Pritner is GREAT in general, cheap and above all, great for exactly this
purpose.

On Tue, 28 Dec 2021 08:56:15 -0500
"Mark Lerman" <mlerman@...> wrote:

There are a number of similar YouTube videos of this. I'm currently
experimenting with doing the same thing, but in a different way. I
bought a 9.7 inch 2K lcd with an HDMI board that I can use as a
second monitor. I going to remove the backlight and replace it with a
UV source. Print Eagle to a file then display the file on the lcd and
use it to expose the board. This should allow a lot more flexibility
from a software point of view. Also, the lcd on a resin printer has a
(relatively) thick piece of glass on the front to protect the screen
that could cause some refraction problems. Hopefully I'll get to try
this in the next week or so.

Mark

At 10:44 PM 12/27/2021, you wrote:
Anyone tried this? I feel foolish for not thinking of it.

The fastest way to make crisp PCBs at home!

The fastest way to make crisp PCBs at home!

Steve Greenfield AE7HD 

--
Steven Greenfield AE7HDVirus-free. www.avg.com

#36867

UV lamps and a good artwork are essential if more than one PCB is needed for a mini production run.
It is a decade or two since I played with it, but there is a big difference between printer resolution, artwork resolution, degree of opacity, and finished etched lines.  What line width and spacing can you reliably achieve?

Here is a link to test patterns in both Gerber and AutoCAD formats plus the US Airforce 1951 Resolution Chart.

The direct imaging avoids the issues opacity and a clever idea for people having a 3D printer available.

A long time there was a member that modified an inkjet printer using a laser instead of the inkjet head, to directly expose the PCB.

Bertho

Show quoted text

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of brane212
Sent: Wednesday, December 29, 2021 1:45 AM
To: [email protected]
Subject: Re: [homebrewpcbs] Exposing PCBs with a resin 3D printer

I don't see the point of that. 
UV lamps are cheap adn so are printer transparencies.
My cheap inkjet can do 4800x2400DPI and good photoresist is cheap.

Compared to that, 3D printer is very crappy option.
I was thinking more along the lines of reworking something like Epson's cheap A3+ Workforce WF-77xx printer or multifunction into printing directly on PCB panel. 

For me, that would be a meaningful change.
Pritner is GREAT in general, cheap and above all, great for exactly this purpose.

On Tue, 28 Dec 2021 08:56:15 -0500
"Mark Lerman" <mlerman@...> wrote:

There are a number of similar YouTube videos of this. I'm currently 
experimenting with doing the same thing, but in a different way. I 
bought a 9.7 inch 2K lcd with an HDMI board that I can use as a second 
monitor. I going to remove the backlight and replace it with a UV 
source. Print Eagle to a file then display the file on the lcd and use 
it to expose the board. This should allow a lot more flexibility from 
a software point of view. Also, the lcd on a resin printer has a
(relatively) thick piece of glass on the front to protect the screen 
that could cause some refraction problems. Hopefully I'll get to try 
this in the next week or so.

Mark

At 10:44 PM 12/27/2021, you wrote:
Anyone tried this? I feel foolish for not thinking of it.

The fastest way to make crisp PCBs at home!

The fastest way to make crisp PCBs at home!

Steve Greenfield AE7HD 

--
Steven Greenfield AE7HDVirus-free. www.avg.com

#36868

I modified several laser printers to deposit toner directly on copperclad. It worked well but was a bit cumbersome at times and I had to drag out this big printer every time I wanted to use it. For me, using either pre sensitized boards or keeping a supply of boards I have previously laminated photosensitive film on seems like it would be very quick without the intermediate step of making transparencies.

Each to his own, but it's fun experimenting. Yesterday I was able to successfully remove the backlight from an Ipad screen I bought used. Will post when I have some results.

Mark

At 01:44 AM 12/29/2021, you wrote:

I don't see the point of that.
UV lamps are cheap adn so are printer transparencies.
My cheap inkjet can do 4800x2400DPI and good photoresist is cheap.

Compared to that, 3D printer is very crappy option.
I was thinking more along the lines of reworking something like Epson's
cheap A3+ Workforce WF-77xx printer or multifunction into printing
directly on PCB panel.

For me, that would be a meaningful change.
Pritner is GREAT in general, cheap and above all, great for exactly this
purpose.

On Tue, 28 Dec 2021 08:56:15 -0500
"Mark Lerman" <mlerman@...> wrote:

> There are a number of similar YouTube videos of this. I'm currently
> experimenting with doing the same thing, but in a different way. I
> bought a 9.7 inch 2K lcd with an HDMI board that I can use as a
> second monitor. I going to remove the backlight and replace it with a
> UV source. Print Eagle to a file then display the file on the lcd and
> use it to expose the board. This should allow a lot more flexibility
> from a software point of view. Also, the lcd on a resin printer has a
> (relatively) thick piece of glass on the front to protect the screen
> that could cause some refraction problems. Hopefully I'll get to try
> this in the next week or so.
>
> Mark
>
>
>
>
>
> At 10:44 PM 12/27/2021, you wrote:
> Anyone tried this? I feel foolish for not thinking of it.
> >
> > The fastest way to make crisp PCBs at home!
> >
> >
> >
> > The fastest way to make crisp PCBs at home!
> >
> >
> >
> >
> >
> >
> > Steve Greenfield AE7HD
> >
> > --
> > Steven Greenfield AE7HD
>
> Virus-free.
>
>
>

Virus-free.

#36869

开云体育

It will be interesting to see the achievable result.

I think there will be limitation on resolution since there is a layer between the LCD and the PCB.? For high resolution normally the artwork emulsion is against the PCB in a vacuum frame or otherwise clamped tightly.

There are many applications where high resolution is not needed but with SMT it is getting smaller and smaller.

Bertho

?

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Mark Lerman
Sent: Wednesday, December 29, 2021 8:49 AM
To: [email protected]
Subject: Re: [homebrewpcbs] Exposing PCBs with a resin 3D printer

?

I modified several laser printers to deposit toner directly on copperclad. It worked well but was a bit cumbersome at times and I had to drag out this big printer every time I wanted to use it. For me, using either pre sensitized boards or keeping a supply of boards I have previously laminated photosensitive film on seems like it would be very quick without the intermediate step of making transparencies.

Each to his own, but it's fun experimenting. Yesterday I was able to successfully remove the backlight from an Ipad screen I bought used. Will post when I have some results.

Mark

At 01:44 AM 12/29/2021, you wrote:

I don't see the point of that.
UV lamps are cheap adn so are printer transparencies.
My cheap inkjet can do 4800x2400DPI and good photoresist is cheap.

Compared to that, 3D printer is very crappy option.
I was thinking more along the lines of reworking something like Epson's
cheap A3+ Workforce WF-77xx printer or multifunction into printing
directly on PCB panel.

For me, that would be a meaningful change.
Pritner is GREAT in general, cheap and above all, great for exactly this
purpose.

On Tue, 28 Dec 2021 08:56:15 -0500
"Mark Lerman" <mlerman@...> wrote:

> There are a number of similar YouTube videos of this. I'm currently
> experimenting with doing the same thing, but in a different way. I
> bought a 9.7 inch 2K lcd with an HDMI board that I can use as a
> second monitor. I going to remove the backlight and replace it with a
> UV source. Print Eagle to a file then display the file on the lcd and
> use it to expose the board. This should allow a lot more flexibility
> from a software point of view. Also, the lcd on a resin printer has a
> (relatively) thick piece of glass on the front to protect the screen
> that could cause some refraction problems. Hopefully I'll get to try
> this in the next week or so.
>
> Mark
>
>
>
>
>
> At 10:44 PM 12/27/2021, you wrote:
> Anyone tried this? I feel foolish for not thinking of it.
> >
> > The fastest way to make crisp PCBs at home!
> >
> >
> >
> > The fastest way to make crisp PCBs at home!
> >
> >
> >
> >
> >
> >
> > Steve Greenfield AE7HD
> >
> > --
> > Steven Greenfield AE7HD
>
> Virus-free.
>
>
>

?

Virus-free.

#36872

It's pretty simple, quick, and gives a decent result.  What's not to like?

The hard part is having a 3D resin printer, but anyway.

As usual, show us how much better yours is.

Tony

Show quoted text

-----Original Message-----
From: [email protected] <[email protected]> On Behalf
Of brane212
Sent: Wednesday, 29 December 2021 5:45 PM
To: [email protected]
Subject: Re: [homebrewpcbs] Exposing PCBs with a resin 3D printer

I don't see the point of that.
UV lamps are cheap adn so are printer transparencies.
My cheap inkjet can do 4800x2400DPI and good photoresist is cheap.

Compared to that, 3D printer is very crappy option.
I was thinking more along the lines of reworking something like Epson's
cheap A3+ Workforce WF-77xx printer or multifunction into printing directly
on PCB panel.

For me, that would be a meaningful change.
Pritner is GREAT in general, cheap and above all, great for exactly this
purpose.

On Tue, 28 Dec 2021 08:56:15 -0500
"Mark Lerman" <mlerman@...> wrote:

There are a number of similar YouTube videos of this. I'm currently
experimenting with doing the same thing, but in a different way. I
bought a 9.7 inch 2K lcd with an HDMI board that I can use as a second
monitor. I going to remove the backlight and replace it with a UV
source. Print Eagle to a file then display the file on the lcd and use
it to expose the board. This should allow a lot more flexibility from
a software point of view. Also, the lcd on a resin printer has a
(relatively) thick piece of glass on the front to protect the screen
that could cause some refraction problems. Hopefully I'll get to try
this in the next week or so.

Mark

At 10:44 PM 12/27/2021, you wrote:
Anyone tried this? I feel foolish for not thinking of it.

The fastest way to make crisp PCBs at home!

The fastest way to make crisp PCBs at home!

Steve Greenfield AE7HD 

--
Steven Greenfield AE7HDVirus-free. www.avg.com

#36873

I hadn't checked dry film photoresist prices for a long time. I see loads of it in small rolls, now. I wonder about the quality, though. Even Amazon has rolls, although they are not Dupont.

I wonder how well the 405nm LEDs in an MSLA printer works on this film.

As far as the printers go, the cellphone sized screen printers are going for relatively low prices. Also watch for people who got them for Christmas and have given up, or upgraded and are selling their older model. Keeping in mind that 1080p/6 inches = 180dpi, which is why newer MSLA printers are using 2k and 4k screens.

--
Steven Greenfield AE7HD

#36874

Anycubic must be moving to larger, higher res, because the Photon is only $99 now, only in the USA. 47um XY resolution, a 2k screen so it is 2560x1440 pixels. I own two.

--
Steven Greenfield AE7HD