RE: [Homebrew_PCBs] No HASL
2013-01-13 by Rick Sparber
I just put up a YouTube video of what you guys have taught me. http://www.youtube.com/watch?v=NS62rik7eWA&feature=youtu.be Rick ... From:
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Re: [Homebrew_PCBs] Re: No HASL
2013-01-13 by Donald H Locker
Flux pen (e.g. ) or just paint some on from one of the gallons should
RE: [Homebrew_PCBs] No HASL
2013-01-13 by Rick Sparber
I took a video of painting the board and will have it on YouTube soon. Rick ... From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On
Re: [Homebrew_PCBs] No HASL
2013-01-13 by Stefan Trethan
I think anything will eventually crumble in a ball mill. The people who use lead balls complain about media contamination and wearing of the lead balls, so it
Re: What size drill bits?
2013-01-13 by chris
Rick, there is a rope (or string really.. I use light switch pull cord) the string goes from the counterweight (which is an old pill container with nuts and
Re: No HASL
2013-01-13 by chris
Rick, FWIW I gave up tinning the boards after I started using this http://www.rapidonline.com/Tools-Equipment/PCB-flux-spray-30093 so my process is now print
RE: [Homebrew_PCBs] Re: What size drill bits?
2013-01-13 by Rick Sparber
Chris, Elegantly simple! You get a very clear view of the place to be drilled and quick action. I sounds like it doesn t take long to develop the skill to make
Re: What size drill bits?
2013-01-13 by chris
... I use 0.8mm carbide bits in a hand held proxxon I can usually manage a few thousand holes before the drill breaks.. My wife usually breaks the drill
RE: [Homebrew_PCBs] No HASL
2013-01-13 by Rick Sparber
Stuart, Almost agreed. But it is good to take a tour of other options before settling on one. Dragging a molten solder saturated piece of copper braid across
RE: [Homebrew_PCBs] No HASL
2013-01-13 by Rick Sparber
ST, It is not about me being cheap, it is about helping my readers get things done without constantly running off to the store. Who would read an article that
Re: [Homebrew_PCBs] No HASL
2013-01-13 by lists
In article , ... Well it seems to me that solder would be far too soft and malleable to grind it, though you could
Re: [Homebrew_PCBs] No HASL
2013-01-13 by Donald H Locker
I suspect solder is too malleable for a ball mill to crumble. Hot inert-gas spray? I d probably start with carbide paper/Wet-orDry abrasive sheets. Maybe just
Re: What size drill bits?
2013-01-13 by jackinnj
preset drill sizes from PCBExpress: .008, .014, .020, .025, .029, .033, .036, .040, .043, .046, .053, .061, .067, .080, .087, .093, .100, .110, .125, .141,
RE: [Homebrew_PCBs] Re: No HASL
2013-01-13 by Rick Sparber
I m sure this would work. My goal is to be able to coat a board using minimal equipment. I have flux in a can and a big roll of 1/8 diameter solder. I want a
Re: [Homebrew_PCBs] No HASL
2013-01-13 by Stefan Trethan
Come on now Rick, you can t possibly be this cheap? Do you really want to have lead dust everywhere? I suppose a ball mill might do the job. ST
RE: [Homebrew_PCBs] No HASL
2013-01-13 by Rick Sparber
But how do I take the solder I have on hand and grind it up to make this kind of flux+solder paste? Rick ... From: Homebrew_PCBs@yahoogroups.com
RE: [Homebrew_PCBs] No HASL
2013-01-13 by Rick Sparber
ST, I like the idea of a solder paintbrush since it uses materials I have on hand. Thanks, Rick ... From: Homebrew_PCBs@yahoogroups.com
Re: [Homebrew_PCBs] What size drill bits?
2013-01-13 by Mitch Davis
... Carbide bits stay sharp for a long time, but they are amazingly brittle. The slightest sideways movement and *ping*, they re gone. It s not realistic to
RE: [Homebrew_PCBs] What size drill bits?
2013-01-13 by Rick Sparber
John, I just went through this myself. It sounds like you have figured out what you need. I ended up spending $60 on a nice selection based on what my current
What size drill bits?
2013-01-13 by thb201
I was looking to get some drill bits but I only want to get just a few sizes, especially if I spring for the more expensive carbide types. Just out of
Re: [Homebrew_PCBs] No HASL
2013-01-12 by Missouri Guy
Heh...heh....that would be quite a sight with the SMDs popping off! Charlie On Sat, 12 Jan 2013 18:59:31 +0100 Stefan Trethan writes: I
Re: [Homebrew_PCBs] No HASL
2013-01-12 by Donald H Locker
... INGREDIENT: Zinc Chloride PERCENTAGE BY WEIGHT:
Re: No HASL
2013-01-12 by tda7000
Will have to try that idea with the Scotch Brite, my last boards I hand-tinned were annoyingly shiny! I used just the largest chisel tip I had and it worked
Re: [Homebrew_PCBs] No HASL
2013-01-12 by Todd F. Carney
Rick, There are a number of excellent video tutorials and demos of various homebrew methods to reflow solder. In them you will find many examples of using
Re: No HASL
2013-01-12 by psykhon@...
Thinking inside the box what would requiere to build a small and simple HASL machine? -A small tank of stainless steel, one from a kitchen supply store will
Re: [Homebrew_PCBs] No HASL
2013-01-12 by Stefan Trethan
I doubt you would be able to clean the flux well enough from under the parts. Also there may be some problems with parts flipping off the board like popcorn,
Re: [Homebrew_PCBs] No HASL
2013-01-12 by Missouri Guy
FYI...there is some flux that already has solder particles in it. The brand I have in my plumbing supplies is called C-Flux , made in the USA by Rectorseal
Re: [Homebrew_PCBs] No HASL
2013-01-12 by Stefan Trethan
Have you tried solder bearing plumbing paste? They make a paste that contains small particles of solder similar to SMD paste, not just flux.
Re: No HASL
2013-01-12 by designer_craig
Back in the late 70 s I worked for a company that had a captive PCB plant. Boards were plated with SnPb as the resist for etching. The plating was fairly heavy
RE: [Homebrew_PCBs] No HASL
2013-01-12 by Rick Sparber
ST, I failed to mention that I am using plumber s solder paste and paint the board using an old tooth brush. I tried reflowing the paste with my hot air gun
RE: [Homebrew_PCBs] No HASL
2013-01-12 by Rick Sparber
Eldon, I really like the idea of using Solder Wick as the paint brush . In fact, it would not be hard to make a tool that would clamp a piece of Solder Wick
RE: [Homebrew_PCBs] No HASL
2013-01-12 by Rick Sparber
KISS, The idea of soaking my board in cooking oil does not thrill me. But I can see how it would do a great job of conducting the heat. I am surprised it
Re: [Homebrew_PCBs] No HASL
2013-01-12 by Stefan Trethan
You can use plumbing solder paste (with flux) and paint the board with it., then you heat the board with hot air or a hotplate.. The paste can be thinned with
Re: [Homebrew_PCBs] No HASL
2013-01-12 by Eldon Brown
On Fri, Jan 11, 2013 at 8:03 PM, KeepIt SimpleStupid
RE: [Homebrew_PCBs] No HASL
2013-01-12 by KeepIt SimpleStupid
It definitely was pretty quick. I basically used the same sort of technique for tinning copper pipe except for the heating method. With pipe, you clean,
Re: [Homebrew_PCBs] No HASL
2013-01-11 by Todd F. Carney
Another way to protect the copper and to enhance solderability is to use an electroless tin-plating solution. I used to use this all the time when I made
RE: [Homebrew_PCBs] No HASL
2013-01-11 by Rick Sparber
Does sound rather messy but maybe fast. I know you can get a fine mix of flux and solder that is used for surface mount. I wonder if you could spread some of
Re: [Homebrew_PCBs] No HASL
2013-01-11 by KeepIt SimpleStupid
I did it this way: I used a frying pan, peanut oil and something to keep the board off the bottom of the pan. Solder dip and wet rag. The oil residue was
No HASL
2013-01-11 by Rick Sparber
I was playing around with some scrap pieces of circuit board I etched and drilled in order to find a way to simulate the HASL (Hot Air Solder Leveling)
Re: UV nail lamps
2013-01-11 by fetbrat
I bought one of those on ebay once. I made a couple of modifications to mine though. the one i got had 4 bulbs, the two in the middle were level and the ones
Re: [Homebrew_PCBs] Vacuum-seal bags, DIY PVC bag vacuum "frames" & 500W halogen light sources
2013-01-09 by Harvey White
... I used Vinyl from a craft store (jo-ann fabrics) which has heavier fabrics for upholstery. Very inexpensive. Similar stores ought to have it, so yes,
Re: [Homebrew_PCBs] Vacuum-seal bags, DIY PVC bag vacuum "frames" & 500W halogen light sources
2013-01-09 by Harvey White
On Wed, 09 Jan 2013 15:47:35 +1100, you wrote: ... Actually, I took some scrap MDF and made a vacuum frame. It s just a sealed box with an array of 1/4
Re: [Homebrew_PCBs] Re: photo resist. Slightly different material.
2013-01-09 by Bob AD5VJ
Really good information Sent from my iPhone ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Vacuum-seal bags, DIY PVC bag vacuum "frames" & 500W halogen light sources
2013-01-09 by Boots Hughston
It is sold at tap plastics Sent from my iPhone ... [Non-text portions of this message have been removed]
RE: [Homebrew_PCBs] Vacuum-seal bags, DIY PVC bag vacuum "frames" & 500W halogen light sources
2013-01-09 by Jeff Heiss
Is PVC sheet sold at Lowes, Walmart or similar type of store? Jeff _____ From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf
Vacuum-seal bags, DIY PVC bag vacuum "frames" & 500W halogen light sources
2013-01-09 by Robin Whittle
A video http://www.youtube.com/watch?v=8WJn5YFANxU demonstrates exposing the Riston-like Puretch negative photoresist film:
RE: [Homebrew_PCBs] Re: photo resist. Slightly different material.
2013-01-09 by Jeff Heiss
I have a Pan American Tool cobalt drill set. Like yours, real cobalt steel, not Chinese stuff, but not TiN coated. What brand of drills do you have?
Re: [Homebrew_PCBs] photo resist. Slightly different material. Puretch
2013-01-09 by Robin Whittle
The Puretch pricing is here: http://www.capefearpress.com/order.html and with shipping the results are, in USD$: Square feet US Canada Elsewhere 2
RE: [Homebrew_PCBs] photo resist. Slightly different material.
2013-01-09 by Rick Sparber
This material might work for etching numbers on the outside diameter of a disk. Hmmm. Anybody tried that? Rick ... From: Homebrew_PCBs@yahoogroups.com
RE: [Homebrew_PCBs] photo resist. Slightly different material.
2013-01-09 by Jeff Heiss
The resist is interesting indeed. It develops in 5 seconds with a 1000w light. It does use the same 1% solution of sodium carbonate for developing as other