Re: [Homebrew_PCBs] Re: Overcoating/soldermask
2006-07-13 by Stefan Trethan
... Well, i guess the disputed point is that solder joints with any sort of flux residue do not look good, which i don t agree with. ST
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Re: Overcoating/soldermask
2006-07-13 by derekhawkins
... The point I m trying to make is that cleanup with a solvent after soldering is best avoided, even if desirable, with anything less than real soldermask or
Re: [Homebrew_PCBs] Re: Overcoating/soldermask
2006-07-13 by Stefan Trethan
... It really depends on the quality used. It is the same as with rosin core solder. Some leave a residue that is almost clear as glass (or at least lighter
Re: Overcoating/soldermask
2006-07-13 by derekhawkins
... It can withstand 500F without breakdown? What do the joints look like after soldering and without cleanup?
Re: [Homebrew_PCBs] Re: Overcoating/soldermask
2006-07-13 by Stefan Trethan
... Colophony can be just left as it is. You can put SMD paste straight on it and reflow, it won t do any harm. The SMD paste should use a flux you can keep on
Re: Newbie having trouble
2006-07-13 by derekhawkins
... Pinholes in the toner traces on the copper can be due to faulty print or improper transfer. You need to see a closeup of an etched TT board in order to
Re: Overcoating/soldermask
2006-07-13 by derekhawkins
... I m assuming that after you solder you re going to have flux residue and burnt polish residue around joints....What cleanup solvent do you use that doesn t
Re: Newbie having trouble
2006-07-13 by sethkoster
... stays on the ... lines on the ... Sorry, I guess that was kind of cryptic. I meant after the transfer adding an etch resistant paint over the traces (on
Re: [Homebrew_PCBs] Re: Overcoating/soldermask
2006-07-13 by Myc Holmes
Overcoating suggestion: I ve started using Future acrylic floor wax to prevent the copper traces from oxidizng. Just wipe a thin film on and let it dry.
Re: [Homebrew_PCBs] PRP 200 price
2006-07-13 by Leon Heller
... From: Venkata Suman Kumar M To: Sent: Wednesday, July 12, 2006 12:49 PM Subject:
Re: [Homebrew_PCBs] Re: Overcoating/soldermask
2006-07-13 by Stefan Trethan
On Thu, 13 Jul 2006 03:13:43 +0200, warrenbrayshaw ... I use colophony resin. Basically tree resin with the turpentine removed. It s the same flux as used in
Re: Overcoating/soldermask
2006-07-13 by warrenbrayshaw
... a ... (Liquid ... I have always used Shellac to protect the newly etched PCB. Shellac is made by dissolving commercial Shellac flakes in methylated
Re: RE : [Homebrew_PCBs] Super bubbler - got it working now!
2006-07-13 by derekhawkins
... Well it certainly cuts it here provided you re only etching one to two boards at a time and the good part is that the tank, heater and aquarium pump only
Re: Overcoating/soldermask
2006-07-13 by derekhawkins
... Clear sprays (Krylon Clear etc.) were once popular during the thru hole days when there were well defined component and solder sides to a board. These
Re: [Homebrew_PCBs] Re: Newbie having trouble
2006-07-12 by Herbert E. Plett
... paint what? paper? board? makes no sense to me. pinholes can only be originated with a faulty print! first use white paper, so you can easily spot if any
RE : [Homebrew_PCBs] Super bubbler - got it working now!
2006-07-12 by Robert Hedan
... ... So, like all real men do, I opted for more power! MUCH MORE POWER! ... You ve come to the same conclusion I did several months ago, the fishtank pump
Re: Overcoating/soldermask
2006-07-12 by sethkoster
... Probably approximately the same as yours. I was thinking more of a post soldering protectant (overcoat), but I d be interested in what people use as a
Re: Super bubbler - got it working now!
2006-07-12 by fenrir_co
... My solution to this was to use two of the larger fish tank pumps that have two air outputs, glue all four pairs of tubing into a brass or plastic part that
Re: [Homebrew_PCBs] Re: CNC
2006-07-12 by Hugh Prescott
There is a program called Kellycam (I think that s right) that will read HPGL or G code and drive motion control systems. For G code only look at TurboCNC or
Super bubbler - got it working now!
2006-07-12 by lcdpublishing
The other day I posted about a baffle I was trying to make. My goal was to get good agitation with good dispersion of bubbles. Someone said I had too big of
Re: Overcoating/soldermask
2006-07-12 by derekhawkins
... What temperature does **your** solder melt at?
Re: Overcoating/soldermask
2006-07-12 by alan00463
... It sounds like a good idea. I haven t tried it yet. No reason why you couldn t try clear nail polish, rubber cement, and clear spray lacquer all on the
Overcoating/soldermask
2006-07-12 by sethkoster
Anyone tried using rubber cement as an overcoat or soldermask? Less flexible but probably more durable would be clear nail polish?
PRP 200 price
2006-07-12 by Venkata Suman Kumar M
Can any body tell me the price of Electrolube PRP200. Thanks in advance Suman
Re: [Homebrew_PCBs] My new toner transfer method
2006-07-12 by Myc Holmes
I ve also had better results wiht with the glossy advertising (Sunday newspaper inserts) than with the Staples inkjet paper. My favorite is the SEARS insert.
My new toner transfer method
2006-07-12 by loco_labs
Hi guys, just thought i would tell you about my new way of pcb making. Step 1, Printing the artwork: using glossy advertising junk mail like bigW or K-mart
Re: Boardmaker 2
2006-07-12 by elsokwak
... Boardmaker. I ... more widely ... with ... ______________________________________________________________________ Hi Leon, Yes EasyPC can read and import
Plastics numbers (codes)
2006-07-12 by warrenbrayshaw
For all those plastics codes and other materials information check out this site http://www.export911.com/envi/plasCode.htm
Re: Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by fenrir_co
... I believe a similar glue is E6000, yes, it s solvent based. Pretty strong, I ve glued glass to chromed metal with it. ... #2 is High Density Poly-Ethylene,
Re: RE : [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by fenrir_co
... I ve asked several people both in real life and online with better chemistry skills than I have, and most of them think that it s probably a little of
Re: [Homebrew_PCBs] Re: CNC
2006-07-11 by Volkan Sahin
Why don t you use g-codes? You can use EMC (http://www.linuxcnc.org) to control step motors of CNC . Volkan ... From: Cristian To:
Re: RE : [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by Stefan Trethan
On Tue, 11 Jul 2006 21:42:02 +0200, fenrir_co ... I still think you are actually adding CuCl to your FeCl instead of regenerating it?
Re: [Homebrew_PCBs] Re: Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by Stefan Trethan
On Tue, 11 Jul 2006 21:34:15 +0200, fenrir_co ... Don t sell that here. silicone is pretty good stuff on glass. I m still unsure what
Re: [Homebrew_PCBs] Re: CNC
2006-07-11 by Leon Heller
Leon Heller, G1HSM leon.heller@bulldoghome.com http://www.geocities.com/leon_heller ... From: Cristian To:
Re: RE : [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by fenrir_co
... Same here. I use a 13 qt sweater box filled half full. A sheet of acrylic with plastic tabs to hold the pcb or brass sheet face down in the etchant, with
Re: Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by fenrir_co
... I used Plumber s Goop or Household Goop when I built vertical etching tanks, rather than silicone. I never had a problem with leaks, but I used a rather
Re: [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by Leon Heller
... From: Robert Hedan To: Sent: Tuesday, July 11, 2006 7:58 PM Subject: RE : [Homebrew_PCBs]
Re: [Homebrew_PCBs] Re: CNC
2006-07-11 by Cristian
... True Jim, but I need a software to drive a CNC with HPGL, and the related electronics. See below. Cristian ... [Non-text portions of this message have been
Re: CNC
2006-07-11 by Victor Fraenckel
Why don t you check out: http://www.machsupport.com/artsoft/index/index.htm There is also a very active group here on yahoogroups:
RE : [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by Robert Hedan
I gave up on the fancy etching machine and opted for plastic containers and rubber gloves. I don t make a lot of PCBs and my time is not of much value right
Re: [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by Les Newell
Hi Chris, Your holes are way too big. All of your air is going out a few of the holes because the air is taking the path of least resistance. You need smaller
Re: [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by JanRwl@AOL.COM
In a message dated 7/11/2006 1:20:52 P.M. Central Daylight Time, stefan_trethan@gmx.at writes: but i did wonder if the lead wouldn t make the fish sick. LOL!
Re: [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by Stefan Trethan
... maybe it s tin, if i find it again i will check for you. I bought it before the rohs scare, but i did wonder if the lead wouldn t make the fish sick. ST
Re: [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by JanRwl@AOL.COM
In a message dated 7/11/2006 12:30:58 P.M. Central Daylight Time, stefan_trethan@gmx.at writes: There s a lead wire inside to weigh it down What?!?!? A
Re: [Homebrew_PCBs] Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by Stefan Trethan
A flexible bubbler hose works OK for me. The bubbles are not entirely uniform in density, but at least they are small. It is a black foam hose, with two rows
Re: CNC
2006-07-11 by jzmuda2000
Cristian, Try Eagel CAD from Cadsoft. See: http://www.cadsoft.de/ It has a CAM processor that outputs HPGL (among MANY other formats.) Jim
Re: Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by javaguy11111
I have not built something like this myself, but I suspect on a first pass I would do what you did. Since that did not work I would start thinking about it
I just joined ..... is anyone working on applying conductive traces ?
2006-07-11 by wftelectron
is anyone looking at techniques for placing conductive material on a substrate and then using some fixing process ? regards Gus
CNC
2006-07-11 by Cristian
Hi Group Please let me know where to find an electrical schematics plus HPGL driving software for a mill/drill CNC Machine? Is that $500 electronics ready?
Baffled by a bubbler baffle - what are you guys using?
2006-07-11 by lcdpublishing
Hi Guys, I am working on a new etching tank for Ferric Chloride. I was using two bubble stones for aquariums, one clogged pretty quickly and the second one