Re: [Homebrew_PCBs] Dextrin as release from TT paper
2004-09-10 by Leon Heller
... From: Norman Stewart To: Sent: Friday, September 10, 2004 6:45 AM Subject: Re: [Homebrew_PCBs]
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Re: Dextrin as release from TT paper
2004-09-10 by Phil
I tried spray starch, it makes the paper way too wet and you get wrinkling. I also tried it on heavy stock (90#) but same problem. I also tried ironing the
Re: [Homebrew_PCBs] Dextrin as release from TT paper
2004-09-10 by Norman Stewart
Haven t tried this, but would spraying the paper (any paper) with laundry spray starch give a usable surface? Since the iodine test indicates a starch
Re: Dextrin as release from TT paper
2004-09-10 by mikezcnc
Grant, My father is a chemical engineer who spent 40 years in paper industry. When I found out 6 moths ago that Pulsar used dextrin coated paper I knew I would
Re: Toronto source of HCl
2004-09-10 by Tom Keys
You can buy Muriatic acid at any swimming pool supply, and most hardware shops. It is a somewhat diluted HCl. Hopefully that will be acceptable.
Re: Dextrin as release from TT paper
2004-09-10 by Phil
Interesting, I hadn t thought of paper that disolves. good thinking, richard. Now, if we can find some one who would be willing to run rice paper through
Re: Dextrin as release from TT paper
2004-09-09 by rmustakos
Phil, Your comment below lead me to searching for water soluable paper, and two things came up: Dissolvo , an artificial paper (non wood pulp) that disolves
Re: Dextrin as release from TT paper
2004-09-09 by Phil
So, the magazine paper is impossible to improve upon? It is the pinnacle of perfection??? I never said I had a problem with paper - I use ink jet paper and it
Re: Dextrin as release from TT paper
2004-09-09 by crankorgan
... this paper ... Years ago I was the judge of who made the best pizza. All three guys used the same measuring spoon-dough-cheese and oven. The same cooking
Re: [Homebrew_PCBs] Re: Dextrin as release from TT paper
2004-09-09 by Alexandre Souza
... I just cannot understand why people have so much hassle with this paper issue. Just use the ordinary couchê (time magazine, as an example) paper, glued
Re: [Homebrew_PCBs] Re: Dextrin as release from TT paper
2004-09-09 by Leon Heller
... From: Phil To: Sent: Thursday, September 09, 2004 6:48 PM Subject: [Homebrew_PCBs] Re: Dextrin as
Re: Dextrin as release from TT paper
2004-09-09 by Phil
This was discussed a while ago. Several people, including myself, tried coating paper with poor results. I recall some one claiming that we hadn t spent
Re: Removing copper at one side
2004-09-09 by Dave Mucha
... on my ... off very ... the ... not ... need to ... I found that FR-4 has an extreemly tight bond with the copper and some phenolics will allow you to peal
Dextrin as release from TT paper
2004-09-09 by grantfair2001
I use Dyna-Art paper (now Pulsar) for toner transfer and find it is excellent. Briefly (1 minute) soaking in water and it slides right off and away from the
Re: Toronto source of HCl
2004-09-09 by grantfair2001
I am using CuCL as an etchant and this needs no H2O2 at all. I have had about 15 litres sitting in a plastic picnic cooler for over 6 months and it is just
Re: [Homebrew_PCBs] Re: Toronto source of HCl
2004-09-09 by Stefan Trethan
... If there is any gassing you have WAY too much H2O2 and probably also too much HCl concentration. ... Only the H2O2 will outgass oxygen. You should only add
Re: Toronto source of HCl
2004-09-09 by cybermace5
... The stuff you get from a hardware store is muriatic acid, about 31% HCl concentration. It s not the nastiest chemical ever, but it s about the nastiest you
Re: Toronto source of HCl
2004-09-09 by grantfair2001
PS Today a friend gave me a few litres he had left over from stuff he got to adjust the ph of his swimming pool. Grant
Re: Toronto source of HCl
2004-09-09 by grantfair2001
Twenty-five litres? I thought 5 litres would be a life-time supply! I haven t adjusted the cupric choride I have in the big picnic cooler since I made the
Re: [Homebrew_PCBs] Removing copper at one side
2004-09-08 by Leon Heller
... From: Stefan Trethan To: Sent: Wednesday, September 08, 2004 4:17 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] Removing copper at one side
2004-09-08 by Stefan Trethan
... That could just be a little bit too tedious for big areas. I tried heating with the heat gun and wasn t really convinced by the results... I guess i will
Re: [Homebrew_PCBs] Removing copper at one side
2004-09-08 by Leon Heller
... From: Stefan Trethan To: Sent: Wednesday, September 08, 2004 10:32 AM Subject: [Homebrew_PCBs]
[Homebrew_PCBs] Removing copper at one side
2004-09-08 by Stefan Trethan
Hi, I tried to peel off the copper at one side of a glassfiber pcb. I used a knife to separate the first layer of glass (with the copper) from the rest, at the
Re: flexible pcb material
2004-09-08 by wheedal99
Well, I was looking for some kapton type materials, but this is thin enough it might just do the trick if I wire a cable to in instead of coming off with a
Re: [Homebrew_PCBs] Re: Toronto source of HCl
2004-09-07 by Adam Seychell
HCl is cheap you can just buy a 25L drum for few more dollars than 5L from a hardware store. Look up your local business directory under building supplies and
OFFLIST: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-09-07 by James M Newton
Why did I find that so funny? The not so ugly American, err... Canadian. Well done Dwayne! ... James Newton: PICList webmaster/Admin
Yet another possibility for direct inkjet resist printing
2004-09-06 by Steve
This is a clear topcoat that is meant to be printed from piezo (Epson) inkjet print heads. No idea if it will print onto copper.
Re: flexible pcb material
2004-09-06 by grantfair2001
Glad it got there Dal. I thought that 12 thou thick double-sided I sent was thin, but apparently there is stuff as thin as 5 thou available, according to Frank
Re: Toronto source of HCl
2004-09-06 by grantfair2001
In some locales it is used to treat swimming pools, the Home Depot stuff was used to clear drains (I think) and treat new concrete floors. There is one other
Re: Toronto source of HCl
2004-09-06 by Dave Mucha
... cupric ... I would check other smaller hardware stores. Is it used in any industries like floor cleaning or stone/granate places ? then you could go to
Re: flexible pcb material
2004-09-06 by wheedal99
A big public Thank you to grantfair for the pcb s that he shipped me. Thanks! I ll give it a go, it looks like it might just work for what I have in mind.
Toronto source of HCl
2004-09-05 by grantfair2001
I went to Home Depot to get more hydrochloric acid to top up my cupric chloride etchant. They don t sell it anymore because of safety requirements regarding
Re: [Homebrew_PCBs] Re: multi-position switch [eBay]
2004-09-02 by Stefan Trethan
On Thu, 02 Sep 2004 14:17:43 -0000, cybermace5 ... I can stop looking. also, when i know the car takes 4 to 10 days to pass, from the
Re: multi-position switch [eBay]
2004-09-02 by cybermace5
... A big lesson: there is no such thing as I already checked eBay. It s like watching a road for a certain car to go by, you can t look once and then say
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-09-01 by Stefan Trethan
... i see.. thanks. ST
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-09-01 by Dwayne Reid
... I had assumed that you were not from North America from your email address. That s why I included links only to sellers who ship worldwide. In
File - monthly.txt
2004-09-01 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder, please read: Subject lines: Remember to change the subject line if you are straying from the original thread. Please change the subject line
RE: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by Alex Hay
... Electroswitch has 12-position switches that take a stop to reduce the available positions -- you can use a 2x12 as a 2x10 by moving the stop a couple of
Re: homebrew rotary multi-position switch - Fluke
2004-08-31 by Dave Mucha
... The fluke meters were just too feature poor. I don t need much for field work, voltage, continunity and current readings from contorl signals. But they
RE: homebrew rotary multi-position switch
2004-08-31 by Thomas P. Gootee
Stefan, ALPHA makes a 2P12T rotary switch that is $1.57 for quantity 1, at www.mouser.com, with Mouser part number 10WR212. That one is make-before-break
Re: [Homebrew_PCBs] Re: homebrew rotary multi-position switch
2004-08-31 by Dwayne Reid
... Modern digital audio consoles do this - the Yamaha PM-1D uses 32 LEDs per rotary encoder to indicate 64 discrete positions (all off, 1 on, 1+2 on, 2 on,
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by Stefan Trethan
On Tue, 31 Aug 2004 08:40:44 -0600, Dwayne Reid ... Thanks, but ebay was the first i looked. I assume you either don t know i m not in
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by Stefan Trethan
... i found another solution. I will hardwire the chip for one cell, and then use a voltage divider for
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by Dwayne Reid
...
Re: [Homebrew_PCBs] Re: homebrew rotary multi-position switch
2004-08-31 by Roy J. Tellason
... Yeah, but that s a lot of bulk and panel space (and rectangular holes needed which I can t cut just yet :-) for something you d set once and forget about,
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by Roy J. Tellason
... What IC is this? Do you have a link for a data sheet?
Re: homebrew rotary multi-position switch
2004-08-31 by cybermace5
... to use ... Handy for setting a device ID. Good when you have several devices on a bus, or wireless, that you want to identify.
Re: [Homebrew_PCBs] Re: homebrew rotary multi-position switch
2004-08-31 by Roy J. Tellason
... I have some of these, and have yet to come up with something I want to use them in...
Re: [Homebrew_PCBs] Re: homebrew rotary multi-position switch
2004-08-31 by Roy J. Tellason
... Just like a mouse pointer starts in the middle of a screen. ... Radio Shack used to sell a bundle of those for a fairly low price, as I recall. ... I ve
Re: [Homebrew_PCBs] homebrew rotary multi-position switch
2004-08-31 by Roy J. Tellason
... To what, keep track of the switch position ? Store a value in a ram chip somewhere. If it needs to stick around store it in a battery-backed ram. You