Re: [Homebrew_PCBs] Re: Cheap laminator project
2008-04-07 by KeepIt SimpleStupid
www.omega.com is a vendor. Thermocouples should use extension wire designed for the thermocouple. Thermocouple connectors are also designed for each type.
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Re: [Homebrew_PCBs] Homemade flatbed inkjet pcb printer
2008-04-07 by Cristian
... Is to get the speed and precision of the cnc when drilling. Also to get all on a single machine, using available HPGL or Gerber programs. ... You can
Re: Homemade flatbed inkjet pcb printer
2008-04-07 by Steve
I would say yes, on topic. Steve Greenfield
Re: Cheap laminator project
2008-04-07 by josemj1
Mark, Most of the more popular thermocouple pairs have been given letter designations. The T-type is the copper/constantan pair, which has a fairly high
Re: [Homebrew_PCBs] Re: Cheap laminator project
2008-04-07 by Stefan Trethan
Nice setup, the same thing could be used to modify a laser printer or copier laminator, which are usually designed a bit more heavy-duty in regards to heat
RE: [Homebrew_PCBs] Re: Cheap laminator project
2008-04-07 by Mark Mickelsen
Josemj1 I m very interested in you project entitled CheapLaminatorModification.pdf , and I d like to try it myself. Since I m a software engineer, my
Re: Homemade flatbed inkjet pcb printer
2008-04-07 by pork_u_pine2000
... I am fascinated by what you are doing. I would dearly love to know more about your work. It sounds as if you are getting excellent results after putting
Re: Cheap laminator project
2008-04-07 by josemj1
Well, as threatened, I wrote up my inexpensive laminator modification. You can find it in the Files sections as CheapLaminatorModification.pdf I hope this
Re: [Homebrew_PCBs] Whiskering thanks to european retards
2008-04-06 by Stefan Trethan
Well, then let s just wait for history to show whatever it will show, it s just the same old cr** time and time again when some reporter somewhere happens to
Re: [Homebrew_PCBs] Homemade flatbed inkjet pcb printer
2008-04-06 by Volkan Sahin
Hi Cristian, It was an another option but since head load is not too much CNC machine could be a burden and printers are not vector based devices. On x-axis
Re: [Homebrew_PCBs] Homemade flatbed inkjet pcb printer
2008-04-06 by Cristian
... Why not use a CNC Drilling Machine instead of a new XY mechanism? You can attach the printing head to the CNC Machine s tool holder. If you can software
Re: [Homebrew_PCBs] Homemade flatbed inkjet pcb printer
2008-04-06 by agscal -AGSCalabrese
I would love to learn about your design. Gus On Apr 6, 2008, at 11:19 AM, Volkan Sahin wrote: Sorry for typo. As you ll see original image is perfect should
Re: [Homebrew_PCBs] Homemade flatbed inkjet pcb printer
2008-04-06 by Volkan Sahin
Sorry for typo. As you ll see original image is perfect should be As you ll see original image is not perfect. Cheers Volkan v_sahin
Homemade flatbed inkjet pcb printer
2008-04-06 by v_sahin
Hi All, I spent couple of months(~4 months) to design my own flat bed inkjet printer and finally I could get some printouts. It is based on Epson inkjet head
Re: [Homebrew_PCBs] Whiskering thanks to european retards
2008-04-06 by agscal -AGSCalabrese
If the law is stupid, then the people who resisted it are not backwards. If the law is stupid, then it is still open to debate and should be overturned. If the
Re: [Homebrew_PCBs] Whiskering thanks to european retards
2008-04-06 by Stefan Trethan
Yes, but that s not up for debate any more. (And it is a problem, just not in the US or EU, it s a problem in China and India and probably Africa next, but we
Re: [Homebrew_PCBs] Whiskering thanks to european retards
2008-04-06 by Russell Shaw
... The ROHS lot didn t do their homework in determining that lead leaching from solder was actually a problem.
Re: [Homebrew_PCBs] Whiskering thanks to european retards
2008-04-06 by Stefan Trethan
And the right materials. (not pure tin) And i resent the retards comment. The law may be stupid, but the ones a bit backward are those who didn t do their
Re: [Homebrew_PCBs] Whiskering thanks to european retards
2008-04-06 by Leon
... From: Russell Shaw To: Sent: Sunday, April 06, 2008 3:09 AM Subject: [Homebrew_PCBs] Whiskering
Whiskering thanks to european retards
2008-04-06 by Russell Shaw
http://www.guardian.co.uk/technology/2008/apr/03/research.engineering http://nepp.nasa.gov/whisker/
Re: [Homebrew_PCBs] Direct Toner - Some Pictures
2008-04-06 by mlerman@ix.netcom.com
Rob, No gel. I fused it using a laminator, no carrier, and ran it through four times, once in each direction. I m going to use a hot plate with a thermocouple
Re: [Homebrew_PCBs] Direct Toner - Some Pictures
2008-04-05 by listgroups08@ozwebwiz.com
Hello Mark, Did you use the gel for the board with 2mill traces? and How did you fuse the toner? Thanks, Rob. ... From: Mark Lerman
[Homebrew_PCBs] Direct Toner
2008-04-05 by mlerman@ix.netcom.com
Stefan, I think I can cut through some of the confusion re my laser printer: I have taken all the metal out of the path. From the rear we have: 1 - The rear
Re: [Homebrew_PCBs] Re: Direct Toner - First Try Results
2008-04-05 by Chuck Kelsey
I actually tried that. It worked sort of OK. Maybe with more experimentation you could get it better than I did. Chuck WB2EDV ... From: Dave Leddon
Re: [Homebrew_PCBs] Direct Toner - Challenge
2008-04-05 by Mark Lerman
Stefan, Before I got the mechanics straightened out, I did damage the drum in 2 places, but since then there hasn t been any. Granted I ve only run boards
Re: [Homebrew_PCBs] Direct Toner - Challenge
2008-04-05 by Stefan Trethan
Hi Mark, I m perfectly happy to keep this on the list so everyone may benefit. One of my questions is about the mechanics. If one sends a rigid PCB through a
Re: [Homebrew_PCBs] Direct Toner - Challenge
2008-04-05 by Mark Lerman
Or do you want to take this off list? Mark
Re: [Homebrew_PCBs] Direct Toner - Challenge
2008-04-05 by Mark Lerman
Hi Stefan, I m not sure whether I am actually interested in a commercial venture - I have more than enough to do right now - but I am interested in considering
Re: [Homebrew_PCBs] Re: Direct Toner - First Try Results
2008-04-05 by Dave Leddon
Instead of modifying a George Foreman grill how about sandwiching the board between two thick aluminum plates, using enough c-clamps to insure even compression
Re: [Homebrew_PCBs] Direct Toner - Challenge
2008-04-05 by Stefan Trethan
Hi, The main point against commercial application for doublesided boards would be the inability to tent vias. Few commercial boards are doublesided but not
[Homebrew_PCBs] Direct Toner - Challenge
2008-04-05 by mlerman@ix.netcom.com
Now that I can print single sided boards, I think I ve found a way to print double sided boards, with excellent registration, in a single pass. This will need
RE: [Homebrew_PCBs] Re: was Direct Toner, Now SMT Owen
2008-04-05 by Bertho Boman
I have done that too, and that avoids the temperature shock. If the specifications on allowable soldering temperatures and time are going to be met, it is a
Re: [Homebrew_PCBs] Re: Direct Toner - First Try Results
2008-04-05 by DJ Delorie
... What I do is put the board on a cold hotplate, then turn it on. Mine takes about three minutes to heat enough to melt solder, which seems to work well for
RE: [Homebrew_PCBs] Re: Direct Toner - First Try Results
2008-04-05 by Bertho Boman
Actually the idea of the Foreman grill might be promising but for another reason: Temperature profile control. First, add some temperature controller to the
Re: [Homebrew_PCBs] Direct Toner - Some Pictures
2008-04-05 by Mike
Good work, Mark. Thanks for sharing your technique and results. ... 73, Mike, K4GMH [Non-text portions of this message have been removed]
RE: [Homebrew_PCBs] Direct Toner - Some Pictures
2008-04-04 by Bertho Boman
Great work Mark!! Congratulations on a clever system, I never expected that to work so well. Bertho From: Mark Lerman Sent: Friday, April 04, 2008 13:00 I
Re: [Homebrew_PCBs] Direct Toner - Some Pictures
2008-04-04 by Mark Lerman
I just uploaded a high resolution image of that area - let me know if you want higher resolution! I also added some captions. Mark
Re: [Homebrew_PCBs] Direct Toner - Some Pictures
2008-04-04 by Mark Lerman
Yes, I did print both sides at once - I didn t notice it the first time, but did it the second time for comparison. I do have quite high resolution
Re: [Homebrew_PCBs] Direct Toner - Some Pictures
2008-04-04 by Stefan Trethan
Is it possible that you printed out both layers of a double-sided board? ;-) Looks nice though, any chance of getting really high resolution pictures of the
[Homebrew_PCBs] Direct Toner - Some Pictures
2008-04-04 by Mark Lerman
Here are some pictures of the direct laser printer method of pcb production. More to follow, but if anyone wants any specific shot, let me know.
RE: [Homebrew_PCBs] Direct Toner - First Try Results
2008-04-04 by Bertho Boman
Hi Robert, Thanks for pointing out that the unit has the internal Schmitt trigger which some people might have missed. Similar result can be achieved with a
Re: [Homebrew_PCBs] Direct Toner - First Try Results
2008-04-04 by listgroups08@ozwebwiz.com
Hi Bertho and Mark, I had a look at the web page you mentioned. I just though I would mention that the opto couple mentioned is not at all like the common
RE: [Homebrew_PCBs] Direct Toner - First Try Results
2008-04-03 by Mark Lerman
I think maybe a hot plate with a thermocouple on the copper of the board. I ll do some tests this weekend. I m going to take and post some pictures in the next
Re: Direct Toner - First Try Results
2008-04-03 by Brian
I am new to this group, and never thought about making my own PCB s. I have usually ordered them, but I see the benefit and am curious about this. Now on this
RE: [Homebrew_PCBs] Direct Toner - First Try Results
2008-04-03 by Bertho Boman
Hi Mark, If you are using a hotplate, the contact between it and the PCB affects the PCB s temperature. In that case, you also ought to have a cover that
RE: [Homebrew_PCBs] Direct Toner - First Try Results
2008-04-03 by Mark Lerman
Bertho, I wouldn t have thought that opto interruptors would be that repeatable. I m going to run a sheet of paper through a laser printer twice and see how
RE: [Homebrew_PCBs] Direct Toner - First Try Results
2008-04-03 by Bertho Boman
Hi Mark Keep up your excellent work! This is a very interesting application! In addition to Robert s comments on the opto interrupter accuracy here is a link
Re: [Homebrew_PCBs] Direct Toner - First Try Results
2008-04-03 by mlerman@ix.netcom.com
Hi Robert, I m using a precision focused opto reflector - angled beam and receiver. I could use a split board with a slit to precisely detect the edge of the
Re: [Homebrew_PCBs] Direct Toner - First Try Results
2008-04-03 by listgroups08@ozwebwiz.com
Hello Mark, That is great to here! I can t immediately think what is causing the pitting to be in lines or streaks. If would have been great if you took a high
Re: [Homebrew_PCBs] Direct Toner - First Try Results
2008-04-02 by Mark Lerman
Robert, My second try was MUCH better. I noticed that the pitting was actually more like streaks, all going in the same direction. Perhaps caused by the gel??