Re: [Homebrew_PCBs] PCB Drilling High RPM
2011-02-26 by Randy S.
Is that the actual name for it ? I cant find it on the harborfreight website. Randy ________________________________ From: Boman33 To:
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Re: PCB Drilling High RPM
2011-02-26 by jeremy
I think i found it http://www.harborfreight.com/1-8-eighth-inch-air-micro-die-grinder-47869.html Jeremy
Re: PCB Drilling High RPM
2011-02-26 by jeremy
Do you have a part number for Harbour Freight? Jeremy
RE: [Homebrew_PCBs] PCB Drilling High RPM
2011-02-26 by Boman33
Sorry, I forgot to mention where the picture is. See: Bertho s Album in this group. Bertho ++++++++++++++++++++++++++++++++++++++++++ From: Bertho Boman
PCB Drilling High RPM
2011-02-26 by Bertho Boman
Abount 15 years ago I did a bunch of PCB drilling. I used a low-cost air-turbine. Often it goes on sale at Harbour Freight and similar places for under $50
Re: [Homebrew_PCBs] Re: Carbide PCB drill ?
2011-02-26 by Leon Heller
I use a Minicraft drill and stand, it s similar to the Dremel. Although the quality isn t very good I very rarely break carbide drills. Using FEC-1 paper
Re: Carbide PCB drill ?
2011-02-26 by Ben L
... I use Carbibe bits in a Dremel drill press all the time, drill many 1000 s of holes in a sitting and hardly ever break a bit. When I do it is because I
Re: Carbide PCB drill ?
2011-02-25 by designer_craig
I do use HHS when hand drilling but the bits dull very fast and and start to leave blow out on the back side of the board. I keep a small wet stone handy to
Re: membrane button contacts and traces
2011-02-25 by James Newton
... Wasn t there some buzz a while back about printing conductive traces from an inkjet? Here is what I have on it:
Re: [Homebrew_PCBs] membrane button contacts and traces
2011-02-25 by Leon Heller
... It s carbon. Leon -- Leon Heller G1HSM
membrane button contacts and traces
2011-02-25 by gpcheshire
I took apart an old remote control and I am realizing that with only one layer of copper the PCB has manages two layers of electrical connectivity. The layer
Re: [Homebrew_PCBs] Re: Carbide PCB drill ?
2011-02-25 by DJ Delorie
... I made my own drill press. The only time I usually break bits now, is if I drop them on the floor... and I use 13 mil bits the most!
Another PCB in The Bag
2011-02-24 by Eldon Brown
The following is another Etch in The Bag example of my PCB projects. See: http://wa0uwh.blogspot.com/ Regards, Eldon Brown [Non-text portions of this message
Re: [Homebrew_PCBs] Re: Carbide PCB drill ?
2011-02-24 by Donald H Locker
A decent drilling machine will make your carbide bits last a long time. HSS or cobalt bits may not break from bending forces, but they will dull very quickly
Re: [Homebrew_PCBs] Re: Carbide PCB drill ?
2011-02-24 by Donald H Locker
Thank you for the information, Tom. Real intelligence from someone in the business is invaluable. I haven t purchased resharpened bits in a very long time,
Re: [Homebrew_PCBs] Re: Carbide PCB drill ?
2011-02-24 by michael tenore
Its better to use high speed steel or cobalt bits.. they can be found cheap from Victor machine or travers or on the web! The carbide bits break too easy even
Re: Carbide PCB drill ?
2011-02-24 by designer_craig
I was going to buy some from Drill Bit City: http://drillcity.stores.yahoo.net/ One thing thought, the carbide bits are vary birttle and I found it was not
Re: [Homebrew_PCBs] Re: Carbide PCB drill ?
2011-02-24 by Cristian
... Let me know where to buy such tool, Tom, please. Cristian
Re: Carbide PCB drill ?
2011-02-24 by twb8899
... I was in the printed circuit business for many years and drilled several million holes per month. We used new bits for multilayer boards and replaced them
Re: [Homebrew_PCBs] Carbide PCB drill ?
2011-02-24 by Leon Heller
... I use them all the time, and they work very well. I get mine from Mega Electronics (UK). Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] Carbide PCB drill ?
2011-02-24 by Donald H Locker
They only reshape the tip. The flutes don t actually wear in service. Resharpened bits are a great deal for people like us. They can t be used in the big
Carbide PCB drill ?
2011-02-24 by designer_craig
Does any one know when the commercial guys have their carbide PCB drills sharpened do they just dress the tips or do they grind the flutes as well? Just
Re: [Homebrew_PCBs] Cleaning Boards
2011-02-24 by Harvey White
... Bonami, a metal cleanser/scouring powder, followed by 1000 grit sandpaper (generally wet is ok), then acetone to get rid of any oil or grease. Harvey
Re: [Homebrew_PCBs] Cleaning Boards
2011-02-23 by Randy S.
I dunno about that .. I use scotch brite and like the little scratches .. Could help the toner fuse? not sure and they come off for the most part after I etch
Cleaning Boards
2011-02-23 by acidblue
How are you guys cleaning your copper boards? Whenever I use the scotch brite pads even with a drop of dish soap, I always get little micro scratches on my
New file uploaded to Homebrew_PCBs
2011-02-22 by Homebrew_PCBs@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Homebrew_PCBs group. File :
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Randy S.
How do I dispose of exhausted etchant ? ________________________________ From: Harvey White To: Homebrew_PCBs@yahoogroups.com Sent: Mon,
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Leon Heller
... The colour depends on the solder-mask colour. Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Randy S.
ok thanks .. I was thinking about mixing in a antifreeze jug .. and putting in 3 - 32oz H2O2 and then add 32 OZ of acid .. outdoors, slowly, with respirator
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Harvey White
... Not photo sensitive. Since it s an acid, it will eat holes in your shirt. I use it outside, having heated it a bit and bubbled air through it. When
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Randy S.
ok thanks .. NEVER took chemistry .. lol I will look in the archives .. Thanks for the great info .. I guess I should mix small amounts unless I plan on using
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Harvey White
... ALWAYS add acid to water. Heat will be generated, but splattering will be minimized that way. Mix slowly. Check general chemistry lab rules. Harvey
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Harvey White
... Mix and store. After about 30 days, the peroxide goes and it will not etch. Bubble air through it and that will regenerate it. Eventually, I think you
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Randy S.
I mix the acid into the peroxide? Not the other way around? and do I have to mix slowly? is there heat generation or splattering? from the mixing process ?
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Randy S.
oh .. can I mix and store this ? or is it a mix , use and discard ? and are there disposal issues ? ________________________________ From: Randy S.
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Randy S.
Is it any safer in the sense of fumes, etc .. hazmat ? ________________________________ From: Tom Biery To: Homebrew_PCBs@yahoogroups.com
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Randy S.
ooooh ok .. thank you.. ________________________________ From: Adam Shea To: Homebrew_PCBs@yahoogroups.com Sent: Mon, February 21, 2011
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Harvey White
... I ve used black, good for displays, blocks light. ... I ve used 4 parts peroxide to 1 part acid. Don t think it s absolutely critical. Harvey
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Tom Biery
I don t know if that formula is correct I am curious if it is? What are the benifits of using that vs ammonium persulfate, that is what I am using in
Re: [Homebrew_PCBs] FR-4 Copper Clad and Etchant mix
2011-02-22 by Adam Shea
FR-4 isn t green, it s kinda beige. On commercial boards it s the solder mask that s green (or red, or blue, or black, or white). --Adam Shea.
FR-4 Copper Clad and Etchant mix
2011-02-22 by Randy S.
FR-4 doesnt have to be green colored? Correct ? Other question .. for making etchant .. I saw 2 parts peroxide to one part muriatic acid ( 34% hydrochloric
Re: New Member
2011-02-21 by Andrew
Chris, .6mm lead spacing should be quite easy to do with TT, in my experience. 0.6mm = .024 ; 10/10 (eg, 10 mils traces, 10 mils spaces, with 1 mil = .001 ) is
Re: [Homebrew_PCBs] Re: NETS
2011-02-21 by Bob Butcher
Hi Randy, You are close to being correct here. A picture may help make this more understandable. Attached are three files, named netlist, schematic, and Power
Re: [Homebrew_PCBs] New Member
2011-02-21 by DJ Delorie
... I wish I could get toner to be as reliable as UV, so that boards that don t require small traces can get done faster and cheaper, but I ve found - in my
Re: [Homebrew_PCBs] New Member
2011-02-21 by Chris Kleeschulte
Hans: Thanks for joining, it nice to have new members. You may want to review the pages associated with this mailing list. There are numerous tutorial links
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-21 by Donald H Locker
The end of had some info. I haven t dug deeply into the module editor. Donald. -- *Plain Text* email -- it s an
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-21 by Randy S.
Is there a tutorial on the module editor and manipulating the components libraries? I have a bunch of duplicate parts after including the new library files ..
Re: [Homebrew_PCBs] Re: Free PCB question
2011-02-21 by Donald H Locker
It was there a few hours ago :( Honest! OK. It was there a few days ago (I wrote the few hours sentence on Friday, though it was not quite accurate anymore
New Member
2011-02-21 by HaHoLang@aol.com
Hi , I am a hobby electronic and look for a easy way to make my own pcb`s. Thanks Hans [Non-text portions of this message have been removed]
Re: Free PCB question
2011-02-21 by Andrew
Randy, On my Ubuntu installation of KiCad, the documentation is in /usr/share/doc/kicad. The tutorial is in the en/ folder; there are a number of demos in the