Re: [Homebrew_PCBs] air pumps
2005-06-28 by Adam Seychell
... Thats a cleaver test. The HCl is weired in that low concentrations
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Re: [Homebrew_PCBs] cutting boards / milling
2005-06-28 by Stefan Trethan
On Tue, 28 Jun 2005 22:09:45 +0200, Les Newell ... I hope the proxxon IB-E will do (15k), it has ok bearings. if not i ve got to make a
Re: [Homebrew_PCBs] cutting boards / milling
2005-06-28 by Les Newell
Hi Stefan, Yes I use them regularly. They last a suprisingly long time. If you are only cutting through one thickness of board you can feed at quite a high
Re: [Homebrew_PCBs] Re: CNC::Random musings from a deranged mind
2005-06-28 by JanRwl@AOL.COM
In a message dated 6/28/2005 7:15:54 A.M. Central Daylight Time, lcdpublishing@yahoo.com writes: So, don t waste your time or effort in thinking of a software
Re: RE : [Homebrew_PCBs] my crude US$170 CNC rig
2005-06-28 by uhmgawa
... Unsure of what you consider easily available but again I d recommend one of the many tooling suppliers. The latest Enco flyer has their perpetual sale
Re: CNC::Random musings from a deranged mind
2005-06-28 by lcdpublishing
Now, now, don t start the name calling. Just accept the facts and learn from them.
RE : [Homebrew_PCBs] air pumps
2005-06-28 by Robert Hedan
Metal corrosion as a result of etchant gas emanations: I have a overhead fan for a kitchen stove waiting for this very purpose. I know it will corrode, but at
Re: CNC::Random musings from a deranged mind
2005-06-28 by derekhawkins
... I d be a fool to even try since these homebrew projects were never intended to be industrial applications? Maybe you should add fool somewhere in the
Re: CNC::Random musings from a deranged mind
2005-06-28 by lcdpublishing
Again, as I have stated before, using software backlash compensation is not an excuse for poor machine design and construction. I agree completly that a small
Re: [Homebrew_PCBs] SMT
2005-06-28 by uhmgawa
... If you are manually soldering SMD components via a soldering iron and wire solder you will need some means to hold down the component until you are able to
Re: SMT
2005-06-28 by derekhawkins
Google SMT SMD
Re: CNC::Random musings from a deranged mind
2005-06-28 by derekhawkins
... That should have been milling or routing. ... have ... in ... drill ... a ... if ... are ... drill ... is ... it s ... poor ... a ... between ...
SMT
2005-06-28 by inscrutable_gal
hi, can anyone tell me more about surface mounted devices? i have many falling off the pcb s at manual insertion and soldering. any suggestions?!
Re: CNC::Random musings from a deranged mind
2005-06-28 by derekhawkins
... LOL! Where is the force trying to move the drill bit coming from? Assuming such a force existed, why would this force suddenly disappear with a perfect
[Homebrew_PCBs] cutting boards / milling
2005-06-28 by Stefan Trethan
hi, Does anyone use those milling bits to cut out boards? The ones with the diamond pattern all over the business end which look otherwise just like PCB
Re: [Homebrew_PCBs] Re: CNC::Random musings from a deranged mind
2005-06-28 by uhmgawa
... In practice it is rarely a problem. The static friction of the ways combined with the cut being driven against one extreme of the backlash removes the
Re: CNC::Random musings from a deranged mind
2005-06-28 by lcdpublishing
Considering that most of the drill bits used for circuit boards are so small, they probably would bend or break before they cause the table and part to move.
Re: CNC::Random musings from a deranged mind
2005-06-28 by derekhawkins
... I don t agree with this. Perhaps with a light table and a high runout drill such as the ubiquitous Dremel one may have an issue. With a heavy table (the X
Re: [Homebrew_PCBs] air pumps
2005-06-28 by Stefan Trethan
On Tue, 28 Jun 2005 13:57:56 +0200, Adam Seychell ... I use CuCl, but maybe my fumes fear needs explaining: Years ago, when i still used HCl H2O2 Tray etching
Re: CNC::Random musings from a deranged mind
2005-06-28 by lcdpublishing
While I don t fully know the exact details, I can tell you right away, you cannot rely on software to eliminate the backlash within a CNC system. For basic
Re: [Homebrew_PCBs] air pumps
2005-06-28 by Adam Seychell
... If tools are corroding several meters away then it must be HCl gas, rather than splashes or wouldn t travel so far. What etchant are you running ? There
Re: [Homebrew_PCBs] my crude US$170 CNC rig
2005-06-28 by David McNab
... Ack on that! ... Thanks! ... Refer earlier post titled CNC mill X-Y tracks . Aluminium angle riding on aluminium angle, temporarily lubricated by WD40
Re: [Homebrew_PCBs] air pumps
2005-06-28 by Stefan Trethan
On Tue, 28 Jun 2005 00:50:28 +0200, Adam Seychell ... well, i have taken the pump apart, cleaned it, and you were right the liquid did affect it, it sticks
Re: [Homebrew_PCBs] CNC::Random musings from a deranged mind
2005-06-28 by Stefan Trethan
... cordless drills usually use a motor what the model-vehicle builders would call similar to a speed 600 . Not a bad motor, and you can get replacements
CNC::Random musings from a deranged mind
2005-06-28 by mikegw20
Now I have never built a CNC anything and I am not overly mechanical. Right that is my qualifications out of the way... I was thinking about high torque motors
Re: RE : [Homebrew_PCBs] my crude US$170 CNC rig
2005-06-28 by Stefan Trethan
On Tue, 28 Jun 2005 00:17:05 +0200, David McNab ... Al on Al bearing will not last, and WD40 will not help cause the drilling dust
Re: [Homebrew_PCBs] air pumps
2005-06-27 by Adam Seychell
... I ve never notice actual mist from bubbling etchant. However, if your trying to minimize gaseous fumes then a sealed system is the only option. Bubbles do
Re: RE : [Homebrew_PCBs] my crude US$170 CNC rig
2005-06-27 by David McNab
... If you ve got any constructive suggestions for evolving the mechanical design to something better, using only easily-available materials and
Re: [Homebrew_PCBs] Smart card
2005-06-27 by David McNab
... Thanks ... Hmm, feels easier to put up a SLIP driver and a cut-down TCP/IP stack, these already exist for 18F, and address the rig via an IP address. This
Re: RE : RE : [Homebrew_PCBs] my crude US$170 CNC rig
2005-06-27 by David McNab
... Not a stepper motor though, so not the same precise control over drill height :P ... -- Cheers David
my crude US$170 CNC rig
2005-06-27 by James Newton
David, I just wanted to say that in any group there is a lot of talk about how to do thing right or best and sometimes it is nice to see how to do
Re: RE : [Homebrew_PCBs] CNC tools
2005-06-27 by uhmgawa
... It is the same solder paste formulation. Otherwise why sample it for pre-production/prototype qualification? Note the amount of solder paste consumed in a
[Homebrew_PCBs] my crude US$170 CNC rig
2005-06-27 by Robert Hedan
Also, i didn t quite understand the pic/memory card (?) discussion here, not knowing what on earth one would need that for on a CNC. It sounds all kind of
Re: [Homebrew_PCBs] Re: air pumps
2005-06-27 by Leon Heller
... From: lcdpublishing To: Sent: Monday, June 27, 2005 5:36 PM Subject: [Homebrew_PCBs] Re: air
Re: [Homebrew_PCBs] ANother idea for applying resist....
2005-06-27 by Mycroft2152
The problems with using an inkjet seems to be clogging the head as well as wetting out the copper with the ink. I thought that using photoresist as the ink
Re: RE : [Homebrew_PCBs] CNC tools
2005-06-27 by derekhawkins
... So you believe this is the same thing board manufacturers use in bulk hence more affordable to them? I doubt it. ... stencil? ... that ... easy to ... with
Re: [Homebrew_PCBs] ANother idea for applying resist....
2005-06-27 by Stefan Trethan
On Mon, 27 Jun 2005 18:45:49 +0200, lcdpublishing ... tried it with a plotter, couldn t get the line width i need with felt pens, couldn t get resisting layer
Re: RE : [Homebrew_PCBs] my crude US$170 CNC rig
2005-06-27 by Mycroft2152
... Hi Stefan, I have the same reaction, I see a chicken grill motor and laugh thinking about you and your many uses for this indispnsible little device. Can
ANother idea for applying resist....
2005-06-27 by lcdpublishing
I know, someone else has already thought of this but if not, here is an idea. A while back I suggested the possibility of an altered ink jet printer that could
Re: [Homebrew_PCBs] Re: air pumps
2005-06-27 by Stefan Trethan
On Mon, 27 Jun 2005 18:36:17 +0200, lcdpublishing ... been there, done that, results uneven esp. 2-sided difficult. thanks anyway. ST
Re: air pumps
2005-06-27 by lcdpublishing
Forgive me, I am sure this has already been discussed but... I don t know if air is required or not so keep that in mind. From the little I have read so far,
Re: Control box ideas
2005-06-27 by lcdpublishing
Old computer cases are a wonderful and very cheap device too! ... breaking the ... trying to find ... a donour? ... corner cause I ... and store ... control
Re: [Homebrew_PCBs] air pumps
2005-06-27 by Stefan Trethan
On Mon, 27 Jun 2005 18:11:47 +0200, Leon Heller ... closed system is main requirement or i would use shop air. I m not spreading any more etchant mist than
Re: [Homebrew_PCBs] air pumps
2005-06-27 by Leon Heller
... From: Stefan Trethan To: Sent: Monday, June 27, 2005 4:53 PM Subject: [Homebrew_PCBs] air pumps
Re: [Homebrew_PCBs] Control box ideas
2005-06-27 by Stefan Trethan
On Mon, 27 Jun 2005 16:51:28 +0200, Robert Hedan ... I ve put a few of those aside too thinking the same thing, as well as some satellite receivers (smaller
[Homebrew_PCBs] air pumps
2005-06-27 by Stefan Trethan
Hi, What else could one use as air pump for bubble agitation? Because i had so little bubble holes bubbling i connected a rubber ball (with one-way valves)
Re: RE : [Homebrew_PCBs] my crude US$170 CNC rig
2005-06-27 by Stefan Trethan
On Mon, 27 Jun 2005 16:54:03 +0200, Mycroft2152 ... While it is true he did more in terms of cnc than myself, i see some serious
RE : [Homebrew_PCBs] Smart card
2005-06-27 by Robert Hedan
- But wait, that s not all, you also get access to a budget-priced unique Vendor ID for your USB product. USB.ORG has strict compliance requirements before
[Homebrew_PCBs] Smart card
2005-06-27 by Robert Hedan
... That s just too cool! - Isn t it? :) Have you got a link (or links) for that? - Tadaaa!
RE : RE : [Homebrew_PCBs] my crude US$170 CNC rig
2005-06-27 by Robert Hedan
The chicken grill motor would have been a stronger substitute for the small motor David used to roll the cord to lift the drill. He also could of used the BBQ