Etching note
2010-06-10 by Mark Lerman
I don t make a lot of boards, and most of them are quite small, so I ve been looking for a simple, fast way to etch. After experimenting with a few suggested
Messages
Browse messages
Page 193 of 707 · 35337 messages matched
Re: [Homebrew_PCBs] Re: Welding pastic tanks for pcb processing. PVC PE or PP?
2010-06-10 by Simao Cardoso
... I was strongly advised towards PVC because the easier welding. I am reconsidering PE because the price only. And since it as superior specs for the
Re: Welding pastic tanks for pcb processing. PVC PE or PP?
2010-06-09 by James
... Yeah, solvent welding, I thought that s what we were referring to.
Re: [Homebrew_PCBs] Re: Welding plastic tanks for pcb processing. PVC PE or PP?
2010-06-09 by Dale J. Chatham
Have a look at http://www.usplastics.com In particular: http://www.usplastic.com/catalog/search.aspx?search=methylene%20dichloride&page=1
Re: Welding pastic tanks for pcb processing. PVC PE or PP?
2010-06-09 by twb8899
I ve made a lot of tanks over the years for my circuit board fabrication company . The materials used were PVC, PE (polyethylene), and PP (polypropylene). The
Re: [Homebrew_PCBs] Re: Welding plastic tanks for pcb processing. PVC PE or PP?
2010-06-09 by Simao Cardoso
... Correct, is something i have consider too. And acrylic is half price of PVC by square meter, i don t need transparency. About the solvent, i am already
Re: [Homebrew_PCBs] Re: Welding pastic tanks for pcb processing. PVC PE or PP?
2010-06-09 by Dale J. Chatham
If using plexiglass/acrylic, I d think that better than welding would be using methylene dichloride as a solvent which disolves the acrylic, then evaporates,
Re: [Homebrew_PCBs] Re: Etching container
2010-06-09 by Dale J. Chatham
Doh! Of course it does. ... -- Our peculiar security is in the possession of a written Constitution. Let us not make it a blank paper by construction.
Re: [Homebrew_PCBs] Re: Via using J-B Weld - anyone tried this?
2010-06-09 by Donald H Locker
Anyone want to try this silver-filled conductive epoxy from Master Bond and report back? Donald. ... [snip]
Re: Via using J-B Weld - anyone tried this?
2010-06-09 by Chris
Confirmed - JB Weld is not conductive. Chris
Re: Welding pastic tanks for pcb processing. PVC PE or PP?
2010-06-09 by James
... I used acrylic for mine, it s commonly known as Plexiglass.
Re: Etching container
2010-06-09 by James
... It causes the dissolved Cu to precipitate out so you can dispose of it as solid waste.
Re: [Homebrew_PCBs] Re: Etching container
2010-06-09 by Dale J. Chatham
Uhh... The question was where do I get NaOH? The answer was Drano. I m not sure how effective it is against Cu, though. ... -- Our peculiar security is in
Welding pastic tanks for pcb processing. PVC PE or PP?
2010-06-09 by Simao Cardoso
Hi all, The welding process was discussed before but i am unsure about plastic to buy. I was to buy PVC sheets and weld, is common and suitable but expensive.
Re: [Homebrew_PCBs] Re: Via-Mag (concept SMD prototype assembly)
2010-06-08 by Dylan Smith
... Indeed, I agree - and perhaps the golden age still hasn t actually arrived :-) I think homebrew electronics has become *far* more accessable since the
Re: [Homebrew_PCBs] Re: Etching container
2010-06-08 by Leon Heller
... I think that Drano is sodium hydroxide (we have something similar called Mr Muscle here in the UK), but it probably has other stuff in it. Leon -- Leon
Re: [Homebrew_PCBs] Re: Etching container
2010-06-08 by Dale J. Chatham
Uhhh... Drano? ... -- Our peculiar security is in the possession of a written Constitution. Let us not make it a blank paper by construction. --Thomas
Re: [Homebrew_PCBs] Re: Etching container
2010-06-08 by Malcolm Parker-Lisberg
The Ferric Chloride waste we used to dispose of WAS loaded with copper AND the advice was that the amount was of no significance when diluted. A tanker load
Re: [Homebrew_PCBs] Re: Etching container
2010-06-08 by DJ Delorie
... Warning: don t store sodium hydroxide (NaOH) in plastic soda bottles. Mine finally gave way last weekend, had a tub full of 1M NaOH (yes, I keep it all in
Re: Etching container
2010-06-08 by pr0pert
I have to put my 2c in on this. Too many years ago when I was in high school I did a lot of PCB etching. I dumped it all down the drain. Many years later after
Re: [Homebrew_PCBs] Re: Etching container
2010-06-08 by Leon Heller
... My local hardware shop sells it. Just pour it down the sink, it s used as a drain cleaner. Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] Re: Etching container
2010-06-08 by Malcolm Parker-Lisberg
Frank I don t use Sodium Hydroxide I just use the recommended method that was advised by the local council waste adviser when we used to dispose of 3 x 5
Re: Etching container
2010-06-08 by Frank P
Malcolm, Where do you get sodium hydroxide? Also, is your disposal method the official, recommended method of disposal? Thanks.
Re: Via-Mag (concept SMD prototype assembly)
2010-06-08 by James
... I m in about the same generation as you, so I missed the golden age but in a sense there is a new one, as you say, some really amazingly sophisticated
Re: new via wire
2010-06-08 by Frank P
This is the kind of copper wire I have been using (see link). http://wedo.hillmangroup.com/viewitems/wire-dispenser-packs/copper-wire?
Re: [Homebrew_PCBs] Re: Via-Mag (concept SMD prototype assembly)
2010-06-08 by Andrew Villeneuve
Though I don t suspect many of the present of future generations are going to be building DIY CRT TV receivers, I do think there s a growing passion for
Re: [Homebrew_PCBs] Re: new via wire
2010-06-08 by kabowers@NorthState.net
... Once upon a time there was a commercial cutting tool that left a flattened end on the wire. It was used to trim component leads and keep them from lifting
Re: [Homebrew_PCBs] Re: new via wire
2010-06-08 by DJ Delorie
... I have one, but apparently there s a fine line between sharp and too dull to actually cut anything :-P
Re: [Homebrew_PCBs] Re: new via wire
2010-06-08 by DJ Delorie
I ve used de-stranded speaker wire up until now. If you can find a 7x28 wire, that would be great, but 7x30 (or 7x31) is loose in a 13.5 mil hole, so it moves
Re: [Homebrew_PCBs] Re: new via wire
2010-06-08 by Donald H Locker
Even better (IMO) is strands from stranded wire. The stuff that is called out as 7x30 (22 AWG) is seven strands of 30AWG. Already tinned, it can be very
Re: [Homebrew_PCBs] Re: new via wire
2010-06-08 by Donald H Locker
A dulled side cutter will do that for you. Make sure the cutting edges are rounded, and they will deform the wire into a tee shaped end that won t fall out.
Re: [Homebrew_PCBs] Re: Via-Mag (concept SMD prototype assembly)
2010-06-07 by lists
In article , ... I find myself inclined to agree with you. I became interested in electronics as a hobby in about 1965/6. It was fun
Re: Etching container
2010-06-07 by James
... You sure don t want to do that if you have any metal pipes or fittings. Not to mention it s illegal (in the US anyway) and the dissolved copper is highly
Re: Via-Mag (concept SMD prototype assembly)
2010-06-07 by James
... His creations are truly a work of art. It definitely looks easier to etch a PCB than to hand wire as he has, but I have to say the end result he gets is
Re: Via-Mag (concept SMD prototype assembly)
2010-06-07 by James
... People have been saying this since the dawn of SMT, but hobbyists have still managed. I avoided SMT for a long time, but recently have found that I can
solder mask
2010-06-07 by James
Has anyone tried using any of the various spray varnish products as a solder mask? More often I m finding the need to mask areas when soldering tiny parts, the
Re: [Homebrew_PCBs] Re: new via wire
2010-06-07 by lists
In article , ... They used to use those for mounting components on PCBs centuries ago. Insert component, clip off ends leaving a
Re: [Homebrew_PCBs] Re: new via wire
2010-06-07 by DJ Delorie
I ve done the stitching thing before but all those little loops tend to get in the way. I suppose 28 gauge bare copper wire would do too, but I worry it would
Re: [Homebrew_PCBs] Re: new via wire
2010-06-07 by Dale J. Chatham
Google [ bare copper wire ] 15 yards 28 gauge delivered to your door for 4.25. ... -- Our peculiar security is in the possession of a written Constitution.
Re: [Homebrew_PCBs] Re: new via wire
2010-06-07 by Stefan Trethan
Just mind that fencing wire might be galvanized steel, not copper. Also note that the plating, even on copper wire, might not solder easily on some types of
Re: new via wire
2010-06-07 by James
... Hey that s a great idea, never even occurred to me to look there. I ve been stripping the insulation off scraps of cat5 from work but wire that s already
Re: new via wire
2010-06-07 by Frank P
I have found that a cheaper source of bare copper wire is in my hardware store s wire fencing department. The bare wire is made so that when a wire fence is
Re: [Homebrew_PCBs] Re: new via wire
2010-06-07 by Leon Heller
... I do that sometimes. I have a reel of tinned copper wire of about the same thickness. Leon -- Leon Heller G1HSM
Re: new via wire
2010-06-07 by Bob_xyz
... If there aren t too many vias, I find that it works well to stitch the vias with 30 gauge wire (stripped wire-wrap wire) by going back and forth from one
[Homebrew_pcbs] DLP printer(s) for Sale
2010-06-07 by Mark Lerman
In the process of making and documenting the modification of the E260 for DLP I ve ended up with 3 of these machines. If anyone is interested in buying a fully
Roland Pen Plotter
2010-06-07 by borgrailuk
Hi, I m new to all this and have been looking through the messages for anything related to the above. Couldn t find anything on using oil based pens as a
Re: new via wire
2010-06-07 by javaguy11111
I do a similar thing, but with 30 gauge wire. To save yourself having to clip on the backside, add a few layers of tape to the corners of the backside of the
Re: Via-Mag (concept SMD prototype assembly)
2010-06-07 by Richard
......and thought how much easier it would be to just do a PCB . - cunningfellow I would have agreed with you several years back, but today, in the realm of
Re: [Homebrew_PCBs] new via wire
2010-06-07 by Vicent Colomar Prats
Have you any photo of the finished via with that methode? 2010/6/7 DJ Delorie ... [Non-text portions of this message have been removed]
new via wire
2010-06-07 by DJ Delorie
In my hunt for easier vias, I picked up some 28 gauge brass wire at the local hardware store. This wire is 13 mil diameter, just a bit smaller than my usual