Homebrew PCBs

I will be modding a new E260 tomorrow afternoon and should have 
something up by Thursday. I have made a "breakthrough" of sorts that 
may allow us to use the internal hv power supply, but I'm still 
experimenting. The problem may end up being that we have to lower the 
transfer voltage rather than raise it

Mark

I'd like to upload the service manual for the E260, but it's slightly 
too large (5439 KB) to upload to the group, and It's a pdf that I 
don't think I can prune. Is there an alternative site or can the size 
limit be raised a bit? Alternatively, anyone who would like a copy is 
free to email me directly for a copy. I don't believe it is 
copyrighted, and seems available from many sources for a nominal amount.

Mark






At 08:36 AM 5/4/2010, you wrote:

>I will be modding a new E260 tomorrow afternoon and should have
>something up by Thursday. I have made a "breakthrough" of sorts that
>may allow us to use the internal hv power supply, but I'm still
>experimenting. The problem may end up being that we have to lower the
>transfer voltage rather than raise it
>
>Mark
>
>
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>

Mark,

http://drop.io will let you upload the file and share the URL with the
group.

-Andrew

On Tue, May 4, 2010 at 5:38 PM, Mark Lerman <mlerman@ix.netcom.com> wrote:

>
>
> I'd like to upload the service manual for the E260, but it's slightly
> too large (5439 KB) to upload to the group, and It's a pdf that I
> don't think I can prune. Is there an alternative site or can the size
> limit be raised a bit? Alternatively, anyone who would like a copy is
> free to email me directly for a copy. I don't believe it is
> copyrighted, and seems available from many sources for a nominal amount.
>
> Mark
>
>
> At 08:36 AM 5/4/2010, you wrote:
> >I will be modding a new E260 tomorrow afternoon and should have
> >something up by Thursday. I have made a "breakthrough" of sorts that
> >may allow us to use the internal hv power supply, but I'm still
> >experimenting. The problem may end up being that we have to lower the
> >transfer voltage rather than raise it
> >
> >Mark
> >
> >
> >
> >
> >------------------------------------
>
> >
> >Be sure to visit the group home and check for new Links, Files, and
> Photos:
> >http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
>
>  
>


[Non-text portions of this message have been removed]

Mark, what sort of "pruning" did you have in mind? There is a program available on Linux -- maybe on Windows also? -- called pdftk that will let you manipulate pdf files all sorts of ways, including culling out pages. If only a few pages are relevant, this might be worth exploring.

--- In Homebrew_PCBs@yahoogroups.com, Mark Lerman <mlerman@...> wrote:

>
> I'd like to upload the service manual for the E260, but it's slightly 
> too large (5439 KB) to upload to the group, and It's a pdf that I 
> don't think I can prune. Is there an alternative site or can the size 
> limit be raised a bit? Alternatively, anyone who would like a copy is 
> free to email me directly for a copy. I don't believe it is 
> copyrighted, and seems available from many sources for a nominal amount.
> 
> Mark
> 
> 
> 
> 
> 
> 
> At 08:36 AM 5/4/2010, you wrote:
> >I will be modding a new E260 tomorrow afternoon and should have
> >something up by Thursday. I have made a "breakthrough" of sorts that
> >may allow us to use the internal hv power supply, but I'm still
> >experimenting. The problem may end up being that we have to lower the
> >transfer voltage rather than raise it
> >
> >Mark
> >
> >
> >
> >
> >------------------------------------
> >
> >Be sure to visit the group home and check for new Links, Files, and Photos:
> >http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
>

Mark,

You might try zipping it. PDF's are pretty tight but you can sometimes 
get 10% to 15% compression
with a zip utility.

Bruce


Mark Lerman wrote:

> I'd like to upload the service manual for the E260, but it's slightly 
> too large (5439 KB) to upload to the group, and It's a pdf that I 
> don't think I can prune. Is there an alternative site or can the size 
> limit be raised a bit? Alternatively, anyone who would like a copy is 
> free to email me directly for a copy. I don't believe it is 
> copyrighted, and seems available from many sources for a nominal amount.
>
> Mark
>
>
>
>
>
>
> At 08:36 AM 5/4/2010, you wrote:
>   
>> I will be modding a new E260 tomorrow afternoon and should have
>> something up by Thursday. I have made a "breakthrough" of sorts that
>> may allow us to use the internal hv power supply, but I'm still
>> experimenting. The problem may end up being that we have to lower the
>> transfer voltage rather than raise it
>>
>> Mark
>>
>>
>>
>>
>> ------------------------------------
>>
>> Be sure to visit the group home and check for new Links, Files, and Photos:
>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>>
>>
>>

On Tue, 04 May 2010 22:32:13 -0000, you wrote:

>Mark, what sort of "pruning" did you have in mind? There is a program available on Linux -- maybe on Windows also? -- called pdftk that will let you manipulate pdf files all sorts of ways, including culling out pages. If only a few pages are relevant, this might be worth exploring.
>
>

This might help.

href="http://www.pdfill.com/pdf_tools_free.html"

Keith Bowers WB4LSJ- Thomasville, NC

As you see, I've uploaded the E260 service manual - it just squeaked 
through sizewise after zipping it. I've been madly experimenting with 
this thing (to the detriment of my day job) and have simplified 
things quite a bit:

1 - No external high voltage power supply is necessary, so no hv 
relay is necessary.
2 - No need to modify the transfer roller, so boards up to 8 inches 
(maybe only 7) across should work. I haven't tried this yet.

I should have the basic mod up by tomorrow. Aside from the 
controller, the basic hack is pretty easy and straightforward. I 
think I will put the mod on my pbase site first - it is easier to 
integrate text and pictures there. <http://www.pbase/mark10970> . 
I'll put files on the Yahoo site.

Mark

I've uploaded directions for the E260 hack in the files section of 
the group. The first part is the mechanical modification of the 
printer itself. In the next few days I hope to write up and upload 
data on the controller and the software.

Mark

Wow Mark!
Amazing job of documenting the process with pictures.
You are a good person for sharing your insights and discovery.

Hi Rick,

I must admit that I have put DLP on the side for now because I have 
been unable to get consistent results. I bought a LJ2200 as someone 
else mentioned a while ago and had no problem modifying it to pass 
quite thick boards through, but the printing was not dependably 
uniform. Perhaps I'll get back to it another day.

When I have some time, I think I want to try using a laser to strip 
paint (resist) off the pcb. The technology is clear cut and certainly 
works. I found someone who can sell me a laser that will focus down 
to 3 mils (IIRC), and I have a pcb cnc mill to carry it. Someone in 
Instructibles described a using two flatbed scanner carcasses to make 
a paper cutting cnc laser for <$50 that looks like it would work well 
for this application, too.

Mark

>
>
>When I have some time, I think I want to try using a laser to strip
>paint (resist) off the pcb. The technology is clear cut and certainly
>works. I found someone who can sell me a laser that will focus down
>to 3 mils (IIRC), and I have a pcb cnc mill to carry it. Someone in
>Instructibles described a using two flatbed scanner carcasses to make
>a paper cutting cnc laser for <$50 that looks like it would work well
>for this application, too.

I have time and a cnc machine to try that, but no such sharp laser.
Could you give me the supplier's contact details, please?
Cristian 

[Non-text portions of this message have been removed]

At 02:26 AM 2/3/2011, you wrote:

> >
> >
> >When I have some time, I think I want to try using a laser to strip
> >paint (resist) off the pcb. The technology is clear cut and certainly
> >works. I found someone who can sell me a laser that will focus down
> >to 3 mils (IIRC), and I have a pcb cnc mill to carry it. Someone in
> >Instructibles described a using two flatbed scanner carcasses to make
> >a paper cutting cnc laser for <$50 that looks like it would work well
> >for this application, too.
>
>I have time and a cnc machine to try that, but no such sharp laser.
>Could you give me the supplier's contact details, please?
>Cristian


This guy has a small diode lasre that will focus down to .04mm x 
.06mm, (1.6 mil x 2.4 mil). He is in Turkey and sells several models 
on ebay. I exchanged several emails with him and he seems to know 
what he is doing. it appears that he uses the aluminum heat sink from 
a power resistor as the case for the laser and a constant current 
LM317 to drive it. Please let me know if you buy one.

Mark

Name and Email:
Kerim KALELI
engkerim@...