Re: [Homebrew_PCBs] Soldering non-plate-through
2005-11-12 by Stefan Trethan
On Sat, 12 Nov 2005 11:20:03 +0100, Mike Young ... I think the lead would heat through and reflow the paste on top, but i would not do
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Soldering non-plate-through
2005-11-12 by Mike Young
Many of the traces for through hole parts end up on the top layer. Without hole plating, there doesn t seem enough capillary action to draw solder from the
Re: [Homebrew_PCBs] Minimalist drill press
2005-11-12 by Mike Young
Yup. Coming soon along with CAD package, both as built and done right . I ll wait till Monday to snap some pics. (My manicurist ran away, along with the maid
Re: [Homebrew_PCBs] Minimalist drill press
2005-11-12 by Alan King
... While not of the same grade, a pair of the KV drawer rails from Lowes will come out closer to this than you might think. And slightly torqued against each
Re: [Homebrew_PCBs] Minimalist drill press
2005-11-11 by Kenneth Long
can you post photos? maybe on a web site? ... === message truncated === __________________________________ Start your day with Yahoo! - Make it your home page!
RE: [Homebrew_PCBs] Minimalist drill press
2005-11-11 by Randy Ledyard
pics, man, pics
Minimalist drill press
2005-11-11 by Mike Young
Well, the tiny little drill bits arrived this afternoon, reminding me that I hadn t figured out yet how to put the RotoZip to work. I also wanted to do this in
Re: wheres a good source for drill bits for PCB's??
2005-11-10 by mikezcnc
Steve, What paper did you use on that board? Mike
Re: [Homebrew_PCBs] Re: Center-drilling
2005-11-10 by Alan King
... Yep small holes in pads do wonders for doing it by hand. Even leave a small ring where you just want a hole, and eat away the copper as you drill. Reason
Bouncing!
2005-11-10 by Jan Rowland
I repeat this message Yahoo told me had bounced: In a message dated 11/9/2005 2:46:34 A.M. Central Standard Time, mikewhy@sbcglobal.net writes: Can I conclude,
Re: wheres a good source for drill bits for PCB's??
2005-11-10 by ballendo
Ken, In addition to the carbide material others have mentioned: PCB drills have standard shank size and a WIDE variety of cutting diameters. 3mm and 1/8 shank
Re: Center-drilling
2005-11-10 by mikegw20
... or ... popular ... When printing the board you can add a cenre hole by making the component pad a donunt. The slight raise in the copper makes it possible
Re: [Homebrew_PCBs] wheres a good source for drill bits for PCB's??
2005-11-09 by ron amundson
... I buy a set of these every year or so. http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=34640 Beware that out of the 50, only 10-20 are
Re: [Homebrew_PCBs] wheres a good source for drill bits for PCB's??
2005-11-09 by lists
In article , ... Well here in the uk I use http://www.megauk.com/ I suppose they might export.
Re: wheres a good source for drill bits for PCB's??
2005-11-09 by lcdpublishing
Beside what others have stated, there are two more very important reasons... Short length of the fluted section of the drill. Longer carbide drills are much
Re: wheres a good source for drill bits for PCB's??
2005-11-09 by Steve
PCB drill bits are made of carbide, whereas the bits from the hardware store are just steel. PCB material is generally resin/epoxy impregnated fiberglass,
Re: [Homebrew_PCBs] wheres a good source for drill bits for PCB's??
2005-11-09 by Leon Heller
... From: Kenneth Long To: Sent: Wednesday, November 09, 2005 4:30 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] wheres a good source for drill bits for PCB's??
2005-11-09 by Stefan Trethan
On Wed, 09 Nov 2005 17:30:12 +0100, Kenneth Long ... They are made of carbide. Normal drills (HSS) will be dull after a few holes,
Re: [Homebrew_PCBs] wheres a good source for drill bits for PCB's??
2005-11-09 by Kenneth Long
n00b question... what s special about PCB drill bits, as opposed to what s available at Home Depot or Lowes? thanks,
Re: [Homebrew_PCBs] Center-drilling
2005-11-09 by Stefan Trethan
On Wed, 09 Nov 2005 09:46:11 +0100, Mike Young ... nobody seems to do it, no. With the carbide bits running at high RPM they will
Re: Center-drilling
2005-11-09 by ballendo
Hello, It s not a dumb question; such small centerdrills and C/S s DO exist. But you are correct, for PCB work the hole is simply drilled in one pass with a
Center-drilling
2005-11-09 by Mike Young
Can I conclude, from the lack of choices for 1/8 shank center drills or countersinks, that center drilling the itty-bitty PCB holes isn t popular practice?
Re: [Homebrew_PCBs] Re: wheres a good source for drill bits for PCB's??
2005-11-09 by Mike Young
I think they re the same store as http://store.yahoo.com/drillcity/pcbkit.html, a Yahoo storefront. New bits, at the Yahoo link, $21; resharpened at the direct
Re: [Homebrew_PCBs] wheres a good source for drill bits for PCB's??
2005-11-09 by Stefan Trethan
On Wed, 09 Nov 2005 01:06:07 +0100, matt clement ... I get them off ebay, you can get a really good deal and sometimes select
Re: [Homebrew_PCBs] Re: Ferric Chloride and silicone ?
2005-11-09 by JanRwl@AOL.COM
In a message dated 11/8/2005 4:02:27 A.M. Central Standard Time, stefan_trethan@gmx.at writes: surely, if they put some protection on (and they seem to do on
Re: wheres a good source for drill bits for PCB's??
2005-11-09 by mikezcnc
www.drillbitcity.com however, the secret is to know which bloody set to order. My preerence is 0.8 to 1.mm ie #67 thru #60. There is only one set that meets
wheres a good source for drill bits for PCB's??
2005-11-09 by matt clement
If you know of any good sites to get a good price on drill bits for use with circuit boards please post a link or privately email me the information. I have
Re: [Homebrew_PCBs] Re: Ferric Chloride and silicone ?
2005-11-08 by Stefan Trethan
... But surely, if they put some protection on (and they seem to do on my boards) it must be something that is easily cleaned off, NOT silicone grease! ST
Re: 600 buck PCB mill/drill revisited
2005-11-08 by ballendo
Alan, I didn t mean to link you to Mikes post. My intent was to acknowledge your obviously experienced based comments. Poor wording on my part. My apologies.
Re: [Homebrew_PCBs] Re: 600 buck PCB mill/drill revisited
2005-11-08 by Alan King
... Seems your reading it was limited, no where did I mention your component prices directly, or say that the numbers are all that high in quantity. But there
Re: [Homebrew_PCBs] 600 buck PCB mill/drill revisited
2005-11-08 by Mike Young
Yeah, it s a tough price point. Remember, he says he s working hard to hold down the prices. If he can do it, unassembled, it would be great. I paid that for
Re: [Homebrew_PCBs] Re: Ferric Chloride and silicone ?
2005-11-08 by JanRwl@AOL.COM
In a message dated 11/7/2005 5:10:13 P.M. Central Standard Time, stefan_trethan@gmx.at writes: it makes no sense to coat the PCBs with something that prevents
Re: [Homebrew_PCBs] Re: Ferric Chloride and silicone ?
2005-11-08 by JanRwl@AOL.COM
In a message dated 11/7/2005 5:05:06 P.M. Central Standard Time, stefan_trethan@gmx.at writes: It can not be solved by solvents like acetone? no [Non-text
Re: [Homebrew_PCBs] Ferric Chloride and silicone ?
2005-11-08 by JanRwl@AOL.COM
In a message dated 11/7/2005 3:31:57 P.M. Central Standard Time, lcdpublishing@yahoo.com writes: So I suspect that there is some sort of coating on the boards
Silicone solvents Re: Ferric Chloride and silicone ?
2005-11-08 by ballendo
Some potentially related info: http://www.eng-tips.com/viewthread.cfm?qid=28166 The best advice here IMO is to Ask the mfr.! Funny how seldom we do that...
Re: 600 buck PCB mill/drill revisited
2005-11-08 by ballendo
Hello, First, the component prices shown in Mike s listing (and Alan s previous post) are nowhere near reality for a product made in qty. (Seems he s not
Re: Ferric Chloride and silicone ?
2005-11-08 by adicont2
In my knowledge there is no solvent for silicone. Don t ask me how the manufacturers of silicone products deal whith this problem. All this products, is made
Re: [Homebrew_PCBs] Re: Ferric Chloride and silicone ?
2005-11-08 by Stefan Trethan
On Tue, 08 Nov 2005 00:12:41 +0100, lcdpublishing ... usually chemical etching. as far as i know mostly sulphuric etchants and some CuCl, conveyor spraying any
Re: 600 buck PCB mill/drill revisited
2005-11-07 by Steve
... Nice!!! That goes for the pdjinc.com machine, too. Steve Greenfield
Re: Ferric Chloride and silicone ?
2005-11-07 by lcdpublishing
Stefan, By chance do you happen to know what process the board MFGs use to remove the excess copper? (as in etching boards the way we do to leave only the
Re: Ferric Chloride and silicone ?
2005-11-07 by lcdpublishing
I don t think so, but not sure. Like someone mentioned last week, autobody shops have a horrible time dealing with Fish eyes in the paint. This is caused by
Re: [Homebrew_PCBs] Re: Ferric Chloride and silicone ?
2005-11-07 by Stefan Trethan
... It can not be solved by solvents like acetone? ST
Re: [Homebrew_PCBs] Re: Ferric Chloride and silicone ?
2005-11-07 by Stefan Trethan
On Mon, 07 Nov 2005 23:51:25 +0100, lcdpublishing ... Chris, it makes no sense to coat the PCBs with something that prevents coating with resist, intentionally
Re: 600 buck PCB mill/drill revisited
2005-11-07 by lcdpublishing
Hey Mike, don t forget, the investor is going to want a good chunk of the margins as well. Fred s machine looks very interesting - didn t know about that one
Re: Ferric Chloride and silicone ?
2005-11-07 by lcdpublishing
Hi Adrian, Thanks for the info. The boards do etch fine, I just can t get toner to stick to them. However, I am sure there is something on the boards making
600 buck PCB mill/drill revisited
2005-11-07 by mikezcnc
All Chris said on this forum about ballendo is true. PCB driller that ballendo is promising, is never going to happen which means to you one thing: guys, do
Re: Ferric Chloride and silicone ?
2005-11-07 by adicont2
Theoreticaly, silicone sealant is chemically inert. So should no interact whith no other chemical element. This is the reason for silicone usings in medicine.
Re: Ferric Chloride and silicone ?
2005-11-07 by lcdpublishing
Okay, will do some side-by-side comparitive tests. I don t have much left of the material I was using, but hopefully there is enough here that is big enough
Re: [Homebrew_PCBs] Ferric Chloride and silicone ?
2005-11-07 by Stefan Trethan
On Mon, 07 Nov 2005 22:29:54 +0100, lcdpublishing ... I m not chemically smart, but silicone sealant is not attaacked by CuCl. I dunno about silicone
Ferric Chloride and silicone ?
2005-11-07 by lcdpublishing
Last week you all may remember me having a ton of problems getting toner to stick to some PCB material. Alan suggested that I pre-etch the board to see if