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Re: HCl / Peroxide Etch

2006-02-08 by mycroft2152

Definitely too strong! :) The Muriatic Acid from the Hardware store was 31% and the Hydrogen Peroxide from a beayt supplies store was listed at 40 volume. I

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XRX1910 and PCB Thickness?

2006-02-08 by Jim Miller

I have sitting here a shiny new Xerox1910 which thanks to someone on the list I managed to get on sale. Now I need to get some copperclad and will no doubt use

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Re: [Homebrew_PCBs] HCl / Peroxide Etch

2006-02-08 by Stefan Trethan

Congratulations, you have just produced some chlorine gas. Your proportions are wrong. There should not be any bubbling if the proportions are right. Your acid

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HCl / Peroxide Etch

2006-02-08 by mycroft2152

I just tried the HCl/Peroxide etchant solution. 1.5 parts 40 volume Hydrogen Peroxide to 1 part HCl (Muriatic Acid) WOW! A very active etch. Took under 1

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Re: Toner transfer experiments

2006-02-08 by wbblair3

... I hadn t though of that and it s a clever idea, but the oven route isn t much of a hassle at all (for me, anyway) and I at least know its temperature of

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Re: [Homebrew_PCBs] Re: Holes for screws

2006-02-08 by Stefan Trethan

... Yes such a hand punch is what i mean. Aren t sold anywhere here, not even mail order, and shipping from the US and taxes is a bit much. Are they common in

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Re: Inexpensive copper clad

2006-02-08 by dl5012

Hi Dave, Yes, I m using PCB layout software to plan boards that I wire by hand. There are several techniques to facilitate layout. The first is to draw a

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Re: [Homebrew_PCBs] Holes for screws

2006-02-08 by Stefan Trethan

On Wed, 08 Feb 2006 18:34:19 +0100, Jose Fuentes ... The PCB house will usually be fine with that. In the gerber files my mounting hole is the same as your

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Re: Inexpensive copper clad

2006-02-08 by dl5012

Hi Dave, It boils down to component placement to minimize wire lengths and crossings. I used to do it on paper; now I use PCB layout software. For simple

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Re: Holes for screws

2006-02-08 by Chris Horne

Stefan, I have a Roper Whitney hand punch that i bought here in the UK if that s what you mean... I wouldn t use it for pcbs though, a drill is much easier.

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Re: [Homebrew_PCBs] Holes for screws

2006-02-08 by Jose Fuentes

Stefan, what I was using were pads without copper, but maybe this is not the best way if I m going to send this design to a PCB manufacturer. Also, I found

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Re: [Homebrew_PCBs] Holes for screws

2006-02-08 by Stefan Trethan

On Wed, 08 Feb 2006 17:42:18 +0100, Jose Fuentes ... I fear that depends on your software. Mine has a feature for placing holes, but it is basically only a pad

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Holes for screws

2006-02-08 by Jose Fuentes

I am designing a board that will have two holes for screws. How can I place those holes in the PCB without using pads? Regards Jose

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Re: Toner transfer experiments

2006-02-08 by Dave

... I remember that KPR photoresist from back in the mid-1970s. It did a reasonably good job, if used with care. I seem to remember that it disappeared from

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Does anyone use the chat room?

2006-02-08 by braincambre500

Hello all, Does anyone use the chat room at a certain time? Or does everyone just post on the messageboard? a newcomer, Patrick

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Re: Inexpensive copper clad

2006-02-08 by soffee83

... I thought I knew that name from somewhere. :) Looks like that s where my double-sided stock came from back in September. 10- 4.5 x9 sheets of FR-4 were

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Re: Toner transfer experiments

2006-02-08 by wbblair3

... On the iron on which I originally measured a temperature of 205F as the maximum now measures at 296F using the black-anodized heat sink. However, with what

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Re: Toner transfer experiments

2006-02-08 by wbblair3

... I originally purchased the Raytek MiniTemp to measure the temperature of RC aircraft and car engines. I have compared it with a thermocouple reading of

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Re: Inexpensive copper clad

2006-02-08 by newaag

Dennis; I put a message to abcfab in the Ebay comments box when requesting payment total that said I was referred to you by Dennis of the Yahoo Homebrew PCB

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Re: Inexpensive copper clad

2006-02-08 by kilocycles

Bob, I second what Dennis said. I just got six 8 x 12 sheets of FR4, .031 from abcfab, and they re pretty good. Like he says in his ads, they may need a bit

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Re: Re: Toner transfer experiments

2006-02-08 by Richard

Bill, I ll be interested to hear the difference you get in readings using the heatsink. I like the optical thermo s, but one has to be careful to -understand-

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