Re: [Homebrew_PCBs] Just my luck
2007-01-30 by Martin Klingensmith
I normally reply on the bottom side of messages, but the HTML that yahoo adds makes it difficult. Anyway, What I did was use the back side of the blade on a
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Re: [Homebrew_PCBs] Just my luck
2007-01-30 by Lez
... Well I just come back from Asda, part of the walmart family, and paid £11.68 or $20 and it takes my board + 1 sheet of paper when cold, but when hot it
Re: grinding drills
2007-01-30 by lcdpublishing
Stefan, to forgot to explain the heat issue. Carbide, with and without various coatings is used extensively in metal machining. Carbide can take a
Re: grinding drills
2007-01-30 by lcdpublishing
Stefan, Carbide can take a LOT of heat, but glowing red or white hot isn t such a good idea. As mentioned, don t quench it if you don t have to but it
Re: [Homebrew_PCBs] grinding drills
2007-01-30 by DJ Delorie
... Sometimes. Check the code on the wheel, it will have some letters (material), numbers (grit), and letters (hardness).
Re: [Homebrew_PCBs] grinding drills
2007-01-30 by Stefan Trethan
On Tue, 30 Jan 2007 18:55:30 +0100, Leslie Newell ... Ok, i think i even have green wheels somehere. I hope the colors are the same
Re: [Homebrew_PCBs] Re: Excellon Drill Files
2007-01-30 by Zoran A. Scepanovic
Hello Phil, ... OK, let me put it this way: Most common format for number format in drill files is 2.3 but different programs generate different headers
Re: [Homebrew_PCBs] grinding drills
2007-01-30 by Leslie Newell
Hi Stefan, You need a green wheel (silicon carbide) or diamond to grind tungsten carbide. Diamond is great but rather expensive. Use a good quality wheel as
grinding drills
2007-01-30 by Stefan Trethan
I just tried to grind a simple cutter out of a broken carbide drill. The 1/8th inch shank is just the right diameter for M3 mounting holes. I ve seen pictures
Re: [Homebrew_PCBs] Just my luck
2007-01-30 by Martin Klingensmith
I ll throw in my bit of luck: I bought a laminator on eBay for $15. At first I thought I got screwed over but all I had to do was scrape the opening a little
RE: [Homebrew_PCBs] brass etching [was Re: New paper to test: Xerox Waterproof]
2007-01-30 by Russ Blakeman
If you use lacquer based paint it will cure in 24 hrs or less and you can take it or enamels off with lacquer thinner, will not affect the brass. ... From:
Just my luck
2007-01-30 by Lez
Was at a carboot sale at the weekend, go each weekend (Mass organised yardsale, usually on farm land), 2 weekends a go I see a kyocea laser printer, old bulky
Re: [Homebrew_PCBs] brass etching
2007-01-30 by DJ Delorie
Thanks for the info. How accurate can you etch? The board I m working on has 0.5mm (20 mil) pitch parts, so I d need something like 10 mil holes with 10 mil
brass etching [was Re: New paper to test: Xerox Waterproof]
2007-01-30 by fenrir_co
... I etch through brass sheet (hobby stores carry 4 x 10 sheets) in .005 and .010 thickness. I ve done .016 and .032 but it takes WAY too long and
Re: Excellon Drill Files
2007-01-29 by Phil Mattison
I looked, but didn t see any option to scale the units in FreePCB for the drill files. But I suppose if you multiply the X/Y step sizes (and jog distances) by
Re: Excellon Drill Files
2007-01-29 by Dave Mucha
... places on ... manually ... When you export the file, you should be able to set up the digits before and after the decimal point. Also, you can have an INI
Re: Excellon Drill Files
2007-01-29 by Phil Mattison
Well, not quite. You have to move the decimal to the left three places on every X/Y coordinate. Word doesn t know how to do that. You could manually edit the
Re: [Homebrew_PCBs] Re: direct inkjet PCBs
2007-01-29 by Stefan Trethan
On Mon, 29 Jan 2007 22:43:03 +0100, Volkan Sahin ... Oh i can apply less ink with the C84 too, but if i use a lower setting it will not
Re: [Homebrew_PCBs] Re: direct inkjet PCBs
2007-01-29 by Volkan Sahin
Hi Stefan, It is most probably because of the printer that I am using. It does not apply so much ink. Volkan ...
Re: [Homebrew_PCBs] Re: direct inkjet PCBs
2007-01-29 by Stefan Trethan
... yes, and i do not understand why. ST
Re: Excellon Drill Files
2007-01-29 by Dave Mucha
... the drill ... code ... anyone know ... format? ... Mils are inches. so that part is easy. You should be able to open it in WORD, then just search and
Re: [Homebrew_PCBs] Re: Excellon Drill Files
2007-01-29 by Robert Blumer
Yes, I would be Phil, Robert
Re: direct inkjet PCBs
2007-01-29 by jam5411
... Using the Matte Finish, Best Photo and Transparency settings. Unless I am wrong this will fire all colors as a replacement for black instead of using the
Re: Excellon Drill Files
2007-01-29 by Phil Mattison
Thanks, but I already understand the file format. I m just looking to save a little time if there is an easy way to convert them already available. The
Re: [Homebrew_PCBs] Re: someone with dry film processing experience?
2007-01-29 by Paul Atkinson
Tom, Thanks for the info. Do you know if it is possible to do the liguid photo imaged soldermask on a hobbiest scale? Could it be developed without using a
Re: [Homebrew_PCBs] Excellon Drill Files
2007-01-29 by Volkan Sahin
Hi Phil, You can use gbtiler (http://gbtiler.sourceforge.net/). It is an open source program and written in Perl language. You can modify the sw and customize
Re: [Homebrew_PCBs] Excellon Drill Files
2007-01-29 by Zoran A. Scepanovic
Hello Phil, ... Send me some short file on PM and I ll explain you the format of Excellon drill file. Maybe can send you a converter Excellon- GCode --
Re: [Homebrew_PCBs] Excellon Drill Files
2007-01-29 by Leslie Newell
Hi Phil, SheetCam will do that. The demo version is limited to about 150 lines of code but if you go to the register page you can request a
Excellon Drill Files
2007-01-29 by Phil Mattison
I ve been evaluating FreePCB for prototype PCBs and it looks like the drill files are created in mils instead of inches. Also the files use a G6 code for the
Re: Why roll your own ?
2007-01-29 by Phil Mattison
My reasons are similar. For quite a while I used the ExpressPCB prototype service to get three 2.8 x3.5 double sided plated through boards (no solder mask or
Re: someone with dry film processing experience?
2007-01-29 by twb8899
... one of their hobbyist kits, but I expect it s exceeded it s shelf life. I wouldn t mind having some more of their presensitized PCB stock if it s available
Re: someone with dry film processing experience?
2007-01-29 by twb8899
... I bought some of the bigger plant equipment Kepro used to make the products they sold. Also bought lots of large PVC plastic sheets they used to make the
Re: [Homebrew_PCBs] Re: ABACOM - Spint Layout, any new opinions?
2007-01-29 by Cristian
... The Sprint s milling output files are HPGL. I m interested in your work. Cristian
Re: [Homebrew_PCBs] Re: UK'ers, anyone in uk _not_ using fecl ?
2007-01-28 by Lez
... Yes I shop in that very supermarket, and I live around the road from the (now tv famous) local store who refused to serve the mother of a 2yr old as the
Re: ABACOM - Spint Layout, any new opinions?
2007-01-28 by lcdpublishing
Cristin, Thanks much! That will help a lot and the few minutes it took to look over the files, it appears as though writing an import filter should be pretty
Re: [Homebrew_PCBs] Re: UK'ers, anyone in uk _not_ using fecl ?
2007-01-28 by Stefan Trethan
... Unless the cleaner in question is found and the ingredient list evaluated you will just have to live with my refusing to believe in any sulphuric acid in
Re: [Homebrew_PCBs] ABACOM - Spint Layout, any new opinions?
2007-01-28 by Cristian
... I ll email you, privately, a set of CNC files/ Sprint Layout attracts me because it is able to import, transparently, a magazine pcb as bmp. Cristian
Re: UK'ers, anyone in uk _not_ using fecl ?
2007-01-28 by Len Warner
... Some groups of chemicals are easily identified by smell, for example, ketones or esters. Most common plastics can be identified by cautiously sniffing
Re: Why roll your own ?
2007-01-28 by scratch_6057
... market ... ok, NOW I understand the question, (thanks Stefan, guess I m just not firing on all cylinders today) To answer the question, I `Roll My Own
Re: UK'ers, anyone in uk _not_ using fecl ?
2007-01-28 by Len Warner
... Safety requirements make it pretty likely that either the small print on the label, or an MSDS, will disclose the major constituents. OTOH it s unlikely
Re: [Homebrew_PCBs] Re: Why roll your own ?
2007-01-28 by Stefan Trethan
On Sun, 28 Jan 2007 18:25:33 +0100, scratch_6057 ... n is near b. ST
Re: [Homebrew_PCBs] Why roll your own ?
2007-01-28 by Martin Klingensmith
I make my own for a few reasons: 1. it s inexpensive 2. it s quick I don t really understand the question about what is the size of the roll your own market. I
Re: Why roll your own ?
2007-01-28 by scratch_6057
... Excuse my ignorance, `abd ??? (What ?) Already Been Done?
Re: UK'ers, anyone in uk _not_ using fecl ?
2007-01-28 by Len Warner
... In producing analytical reagent H2S one would choose H2SO4 over HCl because HCl is so volatile and would contaminate the product. AFAIK, any serious
Re: UK'ers, anyone in uk _not_ using fecl ?
2007-01-28 by Len Warner
... Rotten eggs = hydrogen sulphide, common as a laboratory reagent and dangerous because it s toxic and it anaesthetizes the sense of smell - so those most at
Re: UK'ers, anyone in uk _not_ using fecl ?
2007-01-28 by Len Warner
... We ve just been through the five million names for hydrochloric acid and some alternative suppliers: were you away for that lesson? :-( Regards, LenW
HCl in UK
2007-01-28 by Leon
The HCl (Spirits of Salts) I use is packaged by Blanchards in red plastic bottles. I also use their NaOH, sold as caustic soda. There are two shops not far
Re: ABACOM - Spint Layout, any new opinions?
2007-01-28 by lcdpublishing
LOL! In all the excitement of messing around with the new software I must have kept forgetting it s name :-0 ... Sprint ... isolation ... additional ... to do
Re: [Homebrew_PCBs] ABACOM - Spint Layout, any new opinions?
2007-01-28 by Stefan Trethan
On Sun, 28 Jan 2007 13:57:10 +0100, lcdpublishing ... Well, which is it, Spint Layout, Sprint Layout, or Spring Layout? ;-) ST
ABACOM - Spint Layout, any new opinions?
2007-01-28 by lcdpublishing
Hi guys, Checking back in the archives, I noticed several folks using Sprint Layout. I downloaded the demo this morning for the new version I liked what I saw