Re: C88 direct inkjet printing
2007-02-06 by jam5411
... Stefan mine says Unable to retrieve photo I have had a devil of a time trying to upload photos. Got to be me somehow, but not quite sure what... Give it
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Re: [Homebrew_PCBs] Re: C88 direct inkjet printing
2007-02-06 by Stefan Trethan
... it says: This album is currently empty.
Re: C88 direct inkjet printing
2007-02-06 by jam5411
Yesterday I spent a good amount of time trying several different inks and board temps. Using the C84 and Epson Magenta TO443 (Probably is not the correct ink)
Re: [Homebrew_PCBs] Re: C88 direct inkjet printing
2007-02-06 by William Nelson
FeCL is the only etch I ve used. Yes I did try yellow but the magenta did the best with the original Epson inks. Those first tests were with only one cart of
Re: C88 direct inkjet printing
2007-02-06 by scc_11067
... sure, but I m ... arrangement, heat gun, ... all at once. I ... What type of etchant are you using with magenta? persulfates?, ferric chloride?, muriatic
Re: [Homebrew_PCBs] Re: Photo exposure
2007-02-05 by Leon
... From: derekhawkins To: Sent: Monday, February 05, 2007 7:55 PM Subject: [Homebrew_PCBs] Re: Photo
Re: Photo exposure
2007-02-05 by derekhawkins
... Fiddledeedee, fiddledeedum, waste of time unless a laser printer is all you have or you re confined to TT. Photo exposure gives you a choice and Inkjet is
Rehashing top vs bottom vs interspersed posting
2007-02-05 by Steve
ENOUGH!!! This has been hashed to DEATH before, several times. Top or bottom post, I don t care what. Quote enough to make your reply clear, stay on topic,
Re: [Homebrew_PCBs] Re: Photo exposure
2007-02-05 by Stefan Trethan
... Yes, but some things can be calibrated (skew and stuff). It won t get perfect, but combined with adjusted x/y scaling in software you should get a printout
Re: Photo exposure
2007-02-05 by derekhawkins
... Another issue with laser artwork is dimensional accuracy. Boards made from laser artwork (whether TT or photo) can have the pads so badly misplaced that
Re: Photo exposure
2007-02-05 by derekhawkins
... Inkjet works much better on transparencies. ... Nope! As opaque as it gets, so much so that one can overexpose inkjet artwork by several minutes and not
Re: [Homebrew_PCBs] Re: Photo exposure
2007-02-05 by laxt57@aol.com
Hi Thanks for the info!!!! Jeri ... From: bertd.geo@yahoo.com To: Homebrew_PCBs@yahoogroups.com Sent: Mon, 5 Feb 2007 9:20 AM Subject: [Homebrew_PCBs] Re:
Re: Photo exposure
2007-02-05 by Bert
... I use a CAD program and a Laser Printer. Makes it easy to make a positive. Most CAD programs can also generate a negative but good luck getting that much
Re: [Homebrew_PCBs] Re: Photo exposure
2007-02-05 by Mike Bauers
Actually........ there are long established rules for quoting, pre- dating the BBS and Internet days. It s like those rules about not driving through flashing
Re: [Homebrew_PCBs] Re: C42 Printer
2007-02-05 by Lez
Ok just to tidy this off, do not waste time with a c42, the resolution of the head is too low, and you can see the tracks made by individual heads like
Re: C88 direct inkjet printing
2007-02-05 by dpersuhn
I ll keep the group abreast of my progress. I m just amazed that you were able to get 1 mil traces that came out that nice. I think that I read about 5 mil
Re: [Homebrew_PCBs] Re: C88 direct inkjet printing
2007-02-05 by William Nelson
Sure, copy away. I do have pics of the printer I just haven t done anything with them yet. I will I promise. Super Bowl got in the way.
Re: C88 direct inkjet printing
2007-02-04 by James Newton
... that feed the PCB holder. No ... lifted the top pressure rollers ... the full length also. I dont ... put the paper sensor in the same ... May I copy one
Re: [Homebrew_PCBs] Re: Doing something wrong tinning PCB
2007-02-04 by Ross McKenzie
Another alternative might be the tin plating method discussed at the bottom of this url page. http://www.computronics.com.au/kinsten/ No heat required.
Re: [Homebrew_PCBs] Re: Photo exposure
2007-02-04 by AnaLog Services, Inc.
Re: [Homebrew_PCBs] Re: Electrical properties of cured MIS PRO Inks.
2007-02-04 by Stefan Trethan
... If you want i can measure it. Currently i can only measure resistances with up to 500V (which i hope to change once i get hold of some TV flybacks). But i
Re: [Homebrew_PCBs] Re: Solder mask for inkjet
2007-02-04 by William Nelson
Yep I did that but I think that I figured it out using Eagle alone. Thanks
Re: [Homebrew_PCBs] Re: C88 direct inkjet printing
2007-02-04 by William Nelson
No testing, but they all looked very solid to me. I will go out and check to be sure, but I m pretty darn sure they are OK. I too considered some sort of
Re: Electrical properties of cured MIS PRO Inks.
2007-02-04 by dpersuhn
As a pigment ink, my concern would be the addition of titanium dioxide to the colors in order to add an opaque white, much like what is used in paints. From
Re: Doing something wrong tinning PCB
2007-02-04 by derekhawkins
... This may be the best thing to use provided care is exercised. Furthermore, a torch is what plumbers use. Even though they state the melting point in the
Re: Doing something wrong tinning PCB
2007-02-04 by derekhawkins
... Copper mass is such that there is insufficient heat to raise copper/paste temperature to proper range in a reasonable timeframe. Instead, the flux dries
Re: Solder mask for inkjet
2007-02-04 by derekhawkins
... You need to create Gerber .stc/.sts files then use a Gerber viewer to print. st(c)=solder stop mask (c)omponent side st(s)=solder stop mask (s)older side
Re: C42 Printer
2007-02-04 by lez_briddon
... did you ever post any pictures of this, I just found a c42 free at a yard sale/carboot, needed cartridges, but I got a set of those cheap clones for $8
Electrical properties of cured MIS PRO Inks.
2007-02-04 by Len Warner
... It s purely a guess but if I had to bet on it I would expect the colour inks to be a finely divided organic ink with a binder which might be an acrylic -
Re: OT p.c.b. etching
2007-02-04 by Vasile Surducan
... blackpool thing ... mention ... ones ... system.... ... it, ... resist pen ... resist. I got ... Leon, you wasn t alone...nor the only one. ... greetings,
Re: [Homebrew_PCBs] Electrical properties of cured MIS PRO Inks.
2007-02-04 by Stefan Trethan
... much like acrylic i would expect. Maybe the black pigment is conductive, i doubt it though. ST
Re: [Homebrew_PCBs] Electrical properties of cured MIS PRO Inks.
2007-02-04 by Volkan Sahin
I have used it as a solder mask and faced no problem but it was a low voltage application. I didn t do any high voltage test.
Electrical properties of cured MIS PRO Inks.
2007-02-04 by dpersuhn
Does anyone know what these inks are like (electrically speaking) after drying? I m just wondering if it s reasonable to print a component mask without
Re: Mis-Pro direct inkjet info.
2007-02-04 by dpersuhn
The HCl is the only ingredient that I can forsee causing me grief. I m using a CuCl2 + HCl (1.3 molar). Typically, I m etching at about 125F with a rotary
Re: C88 direct inkjet printing
2007-02-04 by dpersuhn
The photos are phenomenal. Did you do any continuity testing on the small traces (under 5 mil)? I m doing a conversion of a C88 printer with Mis Pro inks, so
Re: [Homebrew_PCBs] Solder mask for inkjet
2007-02-04 by William Nelson
I beleive I may have stumbled onto a way to use Eagle for the mask. I finally found out how to do copper pours for the ground plane (this will save a lot of
Re: [Homebrew_PCBs] C88 direct inkjet printing
2007-02-04 by William Nelson
I lifted the rollers up along with the print head. I cut the frame a little differently from you so my rollers went up 1/8 along with the head. I did have to
Re: [Homebrew_PCBs] Solder mask for inkjet
2007-02-04 by Volkan Sahin
First of all congratulations, your results are really excellent and thanks for sharing. I have faced a similar negative image generation problem. What I do
Re: [Homebrew_PCBs] Doing something wrong tinning PCB
2007-02-03 by pebo festus
I just use a small propane torch, just don t get to close with the flame and you can see the solder change when it melts. mebo ...
Re: [Homebrew_PCBs] C88 direct inkjet printing
2007-02-03 by Stefan Trethan
On Sat, 03 Feb 2007 22:30:59 +0100, William Nelson ... How did you treat the pressure rollers? I have not yet found an ideal solution. I just cut them apart so
Re: [Homebrew_PCBs] C88 direct inkjet printing
2007-02-03 by William Nelson
Yes almost the same. I made a flat feeder path with outside rails that feed the PCB holder. No cutting of the feeder bar required. I lifted mine up .125 in and
Re: [Homebrew_PCBs] Doing something wrong tinning PCB
2007-02-03 by Stefan Trethan
On Sat, 03 Feb 2007 20:57:46 +0100, Mark Merclean ... If you wipe off the grey paste, is the underlying surface tinned? I noticed i do
Doing something wrong tinning PCB
2007-02-03 by Mark Merclean
Hello all, OK, I take up electronics as a hobby. Hit roadblocks, find this yahoo group. Read like crazy and figure out how to make PCB s using the laser toner
Re: [Homebrew_PCBs] C88 direct inkjet printing
2007-02-03 by Ken Ames
hi, is this epson printer you use modified like the instructions say for the C84 model? thanks Ken ...
Re: [Homebrew_PCBs] C88 direct inkjet printing
2007-02-03 by Stefan Trethan
On Sat, 03 Feb 2007 17:46:48 +0100, William Nelson ... Ok, thanks. I will definitely try the preheating of the board, it sounds most promising. ST
Re: [Homebrew_PCBs] Solder mask for inkjet
2007-02-03 by DJ Delorie
... With PCB, just check the ps-invert option, if you re printing to paper . It s designed to support positive- and negative-sensitive photomasks, but
Re: [Homebrew_PCBs] C88 direct inkjet printing
2007-02-03 by William Nelson
Check in the photos section of the forum under C88 Test PCB.
Re: [Homebrew_PCBs] C88 direct inkjet printing
2007-02-03 by William Nelson
I cured the board the same way you did by heating a aluminum block. I tried the home oven but that took too much time but was very good for keeping a constant
Re: [Homebrew_PCBs] Solder mask for inkjet
2007-02-03 by William Nelson
OK I kinda figured that, but I don t know how to do that in Eagle. I have tried but I can t see the way through the transistors. In the Eagle forum it was
Re: [Homebrew_PCBs] Re: C88 direct inkjet printing
2007-02-03 by William Nelson
Yes this board was made using the standard Epson ink. This would not be cheap to do all the time but for experimenting its what I had.