Re: [Homebrew_PCBs] Qu about old reflow solder paste
2006-05-27 by Stefan Trethan
On Sat, 27 May 2006 05:16:45 +0200, Trevor Matthews ... I still think your temperature is too low. What board material did you use that decomposed? I don t use
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Re: [Homebrew_PCBs] Qu about old reflow solder paste
2006-05-27 by Russell Shaw
... Should use a higher temperature for a shorter time to reduce oxidation problems. Try 350degC.
Etching circuit board using sandblasting
2006-05-27 by javaguy11111
Just to throw a thought out that I have not seen mentioned on the list. I am wondering if it would be possible to use some kind of sandblasting technique to
Re: [Homebrew_PCBs] Qu about old reflow solder paste
2006-05-27 by Trevor Matthews
On Fri, 26 May 2006 03:06:21 +0200, Trevor Matthews ... I ve tried a couple of things and here are my results: 1) I placed a couple of blobs of paste on my
Re: I got the Epson R220 today...
2006-05-26 by fenrir_co
... I m pretty sure this is exactly what happens. If you lift the lid and watch as it tries to sense the CD, the printhead runs over the white squares (there s
homemade ink
2006-05-26 by Lez
Off the wall idea, but what about home made inks with evaporative solvents, ignoring the fire risk(!) what about cellulose thinners, gasoline etc, with a wax,
Re: [Homebrew_PCBs] Re: direct inkjet printing
2006-05-26 by lists
In article , ... Have you tried Cillit Bang? Advert shows some guy dropping in a tarnished copper coin
Re: [Homebrew_PCBs] Alternate solvent inks Re: Newbie Question III
2006-05-26 by lists
In article , ... And they had a bloody hard time after WWII as well. I wont go into it all here but last year we went to Dresden as
Re: I got the Epson R220 today...
2006-05-26 by lcdpublishing
Will try to cut a PCB to fit the opening where the CD goes into the tray. I need to check the thicknesses of everything to make sure it will go through the
Re: [Homebrew_PCBs] Re: I got the Epson R220 today...
2006-05-26 by Lez
Mine(900) has a painted white square at the front, and next to it a notch cut out, I dont know if its looking for a reflection from white and then no
Re: I got the Epson R220 today...
2006-05-26 by mycroft2152
Hi Chris, A step by step approach may be appropriate here due to all the variables and unknowns. 1.Try printing a pcb pattern on a CD 2.Replace the CD with a
Re: [Homebrew_PCBs] Re: I got the Epson R220 today...
2006-05-26 by Cristian
... I ve heard that a real CD is sensed there, including borders and the center hole. Try to print something like PCB drawing on a genuine CD first, then
Re: I got the Epson R220 today...
2006-05-26 by lcdpublishing
Tried to run a test last night. DIdn t go well. For my first tests, I figured i would swap the CD tray with a PCB board the same width. This would allow me
Re: [Homebrew_PCBs] Qu about old reflow solder paste
2006-05-26 by Stefan Trethan
On Fri, 26 May 2006 03:06:21 +0200, Trevor Matthews ... OK, if the crust does not melt/reflow when heated with an iron directly, at normal soldering
Re: [Homebrew_PCBs] Qu about old reflow solder paste
2006-05-26 by Trevor Matthews
... My next attempt with scrap was going to let the skillet go higher and see what happens, but I ve tried to melt it with my soldering iron - I can move it
Re: [Homebrew_PCBs] Qu about old reflow solder paste
2006-05-25 by Stefan Trethan
On Thu, 25 May 2006 11:30:00 +0200, Trevor Matthews ... Ok, this crust must be different from the one i described when using plumbing paste for tinning. Does
Re: I got the Epson R220 today...
2006-05-25 by lcdpublishing
Yup, that s the one I got - the one with the black leading edge and two molded circular tabs. Figures :-( ... printer ... proper ... edge, ... is ... printing
Qu about old reflow solder paste
2006-05-25 by Trevor Matthews
Hello out there! I ve been experimenting with an old skillet in an effort to develop a safe homebrew reflow profile. To test my reflow profile, I ve been
Re: [Homebrew_PCBs] Re: epson C84
2006-05-25 by Stefan Trethan
On Thu, 25 May 2006 00:39:17 +0200, fenrir_co ... Well, it s good then the provious owner was cheap and has put in non-epson carts.
Re: epson C84
2006-05-24 by fenrir_co
... I think the SSC utility is designed to reset with a build it yourself resetter (the diagram for it is in the help files somewhere). I don t think it can
epson C84
2006-05-24 by Stefan Trethan
Ok so i fetched that printer today. The colored carts were indicated as empty, so i took a few minutes to follow the instructions here:
Re: Selling Kinsten exposure unit . . .
2006-05-24 by Steve
Please don t post your own eBay auctions here. You can post on-topic equipment for sale, under these conditions: The subject line must say FS or For Sale. A
Selling Kinsten exposure unit . . .
2006-05-24 by Brian Chapman
and other items. I m going to eBay several items, but thought I would check interest here first. However, I see nothing about selling rules in the list
Laser removal of etch resist
2006-05-24 by Philip Mac Cabe
Hi all, Do I see another wheel being reinvented here? A UV laser works on photo resist. Someone has already done this with a flatbed plotter and a UV Laser
Re: I got the Epson R220 today...
2006-05-24 by fenrir_co
... Check your CD printing tray. If the end that feeds into the printer has a thin clear mylar strip attatched to it, then you have the proper one. If it has
Re: I got the Epson R220 today...
2006-05-23 by lcdpublishing
Cool, maybe this weekend will be THE weekend to make some progress on this for the both of us. Chris ... quick Look- ... printing. ... cutting ... there ...
Re: I got the Epson R220 today...
2006-05-23 by lcdpublishing
Hi MYC, yes, that is the plan. First I am going to get it working to print CD/DVDs - that s the primary reason I bought it. Then, I will make some small PCBs
Re: [Homebrew_PCBs] I got the Epson R220 today...
2006-05-23 by Stefan Trethan
On Tue, 23 May 2006 17:53:14 +0200, lcdpublishing ... I bought a C84 for 1eur. It has head problems but i hope to clean it up. I ll fetch it tomorrow, but not
Re: [Homebrew_PCBs] I got the Epson R220 today...
2006-05-23 by Mycroft2152
Hi Chris, If you are doing pcb s smaller than a CD, you should be able to mount them on the CD holder. It would be a quick start to prove of the concept
I got the Epson R220 today...
2006-05-23 by lcdpublishing
I finally got the R220 today and un-boxed it. Based on a quick Look- over , it appears as though it is mechanically good for PCB printing. As typical, there
[Homebrew_PCBs] Re: Alternate solvent inks
2006-05-22 by Robert Hedan
... Hmmm, hot glue, I hadn t thought of that. I don t think hot glue adheres well enough to rip a contact pad from the epoxy. One very slight problem using
Laser removal of etch resist
2006-05-22 by Steve
Please change the subject line or just start a new thread. Regarding Miracool- why use something that is clear and therefore will be more difficult to remove
Re: [Homebrew_PCBs] Re: Alternate solvent inks
2006-05-22 by William Carr
... You d need to at least clean off the contact areas. I was envisoning cleaning the board, popping hot glue dots on the contact points, then spraypainting
[Homebrew_PCBs] Re: Alternate solvent inks
2006-05-20 by Robert Hedan
... Any reason why you couldn t let the poly remain and protect the copper? Would it prevent you from soldering components, or would it melt away from the
Re: [Homebrew_PCBs] Re: Alternate solvent inks
2006-05-19 by William Carr
... I like the idea... there s a new transfer paper the HTFDP folks are talking about called MiraCool. You heat-press it and then the backer practically falls
Re: unsuccesful attempts to transfer on board :(
2006-05-19 by chroniclz
k i tried different papers. left the trannys. will probaqbly experiment with achieving the right temprature for trannys later. they do seem to leave very
Re: [Homebrew_PCBs] Re: Alternate solvent inks
2006-05-18 by David Griffith
... Instead of making a mask, how about spraying a board with hairspray and using a laser to vaporise hairspray where you want copper to remain. -- David
Laser removeal of etch resist Re: Alternate solvent inks
2006-05-18 by Steve
... It s been discussed fairly recently. I ll bet you can, because it s been pointed out that the copper is very difficult to cut with the laser, so anything
Re: Alternate solvent inks
2006-05-18 by thomascouey
This actually gave me an idea. It might be hard to implement, but if you could get a thin masking material and laser etch your pattern through it so that it
Re: [Homebrew_PCBs] What's left Behind?-Was-Radio Shack Solder Paste-Re: Plumber's Paste
2006-05-18 by Stefan Trethan
On Thu, 18 May 2006 18:30:18 +0200, kilocycles ... Who knows... I haven t seen those around here yet, ours are not pre-tinned. I don t
What's left Behind?-Was-Radio Shack Solder Paste-Re: Plumber's Paste
2006-05-18 by kilocycles
Stefan, OK, I ll give it a try. I ll be putting it on pretty thin, anyway. I ll do it on a few boards with the Radio shack paste and the Oatey Instant Solder,
Re: [Homebrew_PCBs] What's left Behind?-Was-Radio Shack Solder Paste-Re: Plumber's Paste
2006-05-18 by Stefan Trethan
On Thu, 18 May 2006 01:18:49 +0200, kilocycles ... If you wash the board well it will be fine. These plumbing fluxes are usually all
Re: [Homebrew_PCBs] Re: Alternate solvent inks
2006-05-18 by William Carr
... It s both. It reacts with moisture, binding it and causing clotting. One of these agents is called fibrinogen. It was apparently the August 2005 issue of
Re: RE : unsuccesful attempts to transfer on board :(
2006-05-18 by Andrew
... Yep - some printes do a good job on OHTs. Many laser printers leave nasty pinholes on them and things don t work out as well. I know my laserjet 4xxx does
Re: Circuit Paper
2006-05-17 by kilocycles
Not that far off the mark, since they re already doing rapid protyping by building up layers from an ink jet-like process. Ted
What's left Behind?-Was-Radio Shack Solder Paste-Re: Plumber's Paste
2006-05-17 by kilocycles
Matt et al, I was thinking in terms of using it to plate a circuit board to protect against corrosion, i.e., not having to go the Tinnit route. So far, I
[Homebrew_PCBs] Re: RE : unsuccesful attempts to transfer on board :(
2006-05-17 by Robert Hedan
... Before doing toner-transfer with Pulsar paper, I started by using transparencies with photo-sensitive PCBs with excellent results. I could make 10mil
Re: RE : unsuccesful attempts to transfer on board :(
2006-05-17 by Andrew
... The funny thing about this statement is that transperancies work very well for Toner- Transfer but are quite hopeless for UV-Photo etching with most laser
Re: [Homebrew_PCBs] Re: Alternate solvent inks [ot] water absorbers.
2006-05-17 by Codesuidae
... The commercial names of the products are TraumaDEX (modified potato starch) and QuikClot (zeolite). They work by removing water from the blood at the
Hair Spray and blood was - Re: Alternate solvent inks
2006-05-17 by Andrew
... Well - if the epson standard ink is totaly etchant soluble and hair spray is an excellent resist - how about you print a negative in standard ink THEN