Re: PCB Milling Software
2004-07-22 by IMService
... DeskPCB $75 http://www.imsrv.com/deskpcb Drills Excellon and routs trace isolation from Gerbers. Mirroring for bottom side of board. DeskCNC $250
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Re: Spray etcher- technology of etching
2004-07-22 by cruizzer77
Yes everything is made of plastic, both PVC and PP, except some screws which are A4 stainless which is acid resistant. Regards Martin ... will ... of ...
Re: [Homebrew_PCBs] Re: Spray etcher- technology of etching
2004-07-22 by Les Newell
Just make sure your tank is compatible with your etchant - Ferric will eat stainless! Les
Re: Spray etcher
2004-07-22 by cruizzer77
I just had a look at the website of a model shop and voila they have speed 600 motors at reasonable prices. While rc car motors are incredibly expensive the
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-22 by Markus Zingg
... Guys, no worries, it DOES WORK withouht any spindle of any sort. Just look at the pictures I provided with the link to Radix in my previous post. The main
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-22 by Stefan Trethan
... smaller DC motors (like for model building) are build to spin that fast. For higher power look at grinders, angle grinders and straight grinders that is.
Re: Spray etcher
2004-07-22 by cruizzer77
Yes that s it! The 3-hole version works basically. I actually did angle the holes a bit and at 7 000 rpm the water splashed out of the holes up to about 5 cm
Re: [Homebrew_PCBs] Re: Spray etcher- technology of etching
2004-07-22 by Stefan Trethan
... must be the cause. moving the board seems to work ok, and it is zero-mist also. I wonder what a ultrasonic transducer would cause? I mean it also rips off
Re: [Homebrew_PCBs] Re: Spray etcher - spiral
2004-07-22 by Stefan Trethan
... agreed, not too hard to do. ST
Re: Spray etcher- technology of etching
2004-07-22 by Dave Mucha
... lot ... etchant ... surface of ... agitation ... lot of ... I think I read about surface tension of the etchant and exposure of the coppper being different
Re: Spray etcher - spiral
2004-07-22 by Dave Mucha
... inside ... one can take PVC and just twist it into shape like a wrought iron railling spindle. Or, one could hand file a part without too much difficulty.
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-22 by Stefan Trethan
... I believe it should work without the spiral. What we missed with the pumping thing was only the simple it will go out the bottom . You must restrict the
Re: Spray etcher
2004-07-22 by cruizzer77
Well this is interesting. The original patent paper clearly states that the etchant is pumped up the tube using a sprial mounted inside the tube. This sounds
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-22 by Stefan Trethan
On Thu, 22 Jul 2004 07:00:13 -0300, Alexandre Souza ... A spray etcher is faster than most other methods, because it uses a lot of force/agitation. It is
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-22 by Alexandre Souza
I still cannot get the point of a spray etcher. Someone could direct me to a site or something I can get more info? I m really curious about this one. Don t
searching the archives
2004-07-22 by Adam Seychell
... I first found the message searching my PC email folder, I got the date of that message , then went to yahoo groups web page and manually selected messages
Re: Spray etcher -searching the archives
2004-07-22 by Dave Mucha
... hystory ... search. ... searched. I ... Yahoo does indeed search on one keyword, but only 250 records at a time and then reports the results for those 250
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Adam Seychell
... we had patent discussion long time ago on this group. see message http://groups.yahoo.com/group/Homebrew_PCBs/message/1561 Does the yahoo groups search
Thomas Gootee - winmail.dat
2004-07-21 by Steve
Hi, Tom. Glad you found out what it took to get your press working. I ve got a commercial Tshirt press, too, I use it to make Tshirts, but I m glad to know I
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Markus Zingg
... Uhm.. My memory aparently was not that bad. Back home, I measured the tube of the etcher I have here. The outer diameter is 2.5 cm. The tube consist of 2mm
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Stefan Trethan
... good point... i think we didn t catch that one ;-) thanks ST
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Les Newell
The spinning tube system relies on the tube forming part of a centrifugal pump. The rapidly rotating water is thrown to the outside of the tube by centrifugal
Re: Spray etcher
2004-07-21 by Phil
... said I ... 17 years
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Markus Zingg
... Yes and no. It works and I m sure there are multiple ways to build a good working unit. ... Bungard, but since it dates back to the sixties I figure the
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Stefan Trethan
... I m convinced the photo i linked to wasn t shot at that angle by accident. The corner is obstructing view of the tube... But if one really wants to copy it
Re: Spray etcher
2004-07-21 by cruizzer77
Yes these are exactly the machines I had in mind. The Bungard Jet 34 is the archetype of these rotary spray etchers, but of course detailed pictures are
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Stefan Trethan
No, no wands here. (didn t even know the arm in the dishwasher is a wand, thought a wand is only used by wizards ;-) ) a rotating tube, and centrifugal force.
Re: [Homebrew_PCBs] Re: Peel & Press alternative
2004-07-21 by smartdim@aol.com
Thanks Dave ... In a message dated 7/21/2004 6:53:54 AM Pacific Standard Time, dave_mucha@yahoo.com writes: Hi Ken, and welcome ! On hte web page/home page
Re: [Homebrew_PCBs] Spray etcher
2004-07-21 by Stefan Trethan
On Wed, 21 Jul 2004 14:54:13 +0100, Leon Heller ... None of the rotating tube sprayers needs a additional pump, and it would
Re: Spray etcher
2004-07-21 by Dave Mucha
... fluid ... Hi MArtin, I m not sure I follow your question. It seems that the rotating wand would be like a dishwasher spray wand ? it would have many
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Stefan Trethan
... have you ever measured the speed of the motor? I got the impression it is a fast one, perhaps 8000 or 10000 rpm? ST
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Stefan Trethan
I m very suprised the fan dosn t work, i suspect it has t do with the different density of water/air. perhaps the water was only thrown outwards, not up. I
Re: [Homebrew_PCBs] Spray etcher
2004-07-21 by Leon Heller
... From: cruizzer77 To: Sent: Wednesday, July 21, 2004 12:30 PM Subject: [Homebrew_PCBs] Spray etcher ...
Re: Peel & Press alternative
2004-07-21 by Dave Mucha
... Hi Ken, and welcome ! On hte web page/home page for the list, there are statistics and other data. at the bottom of the home page, there is a list of
Re: [Homebrew_PCBs] Re: Spray etcher
2004-07-21 by Markus Zingg
... Out of my memory I d say ~2.5 - 3 cm. There are obviousely holes within the tube and they go around it in a spiral form aparently to smothen the spraying
Re: Spray etcher
2004-07-21 by cruizzer77
Thanks for your replies! I tried the one with the propeller, mounted a small cpu fan propeller on the bottom of the tube and the upper part of a half- liter
Re: [Homebrew_PCBs] Spray etcher
2004-07-21 by Markus Zingg
... The one I have is having a small plate that basically would close the tube but this plate is having three holes in it. Can t tell from memory wehter
Re: [Homebrew_PCBs] Spray etcher
2004-07-21 by Stefan Trethan
... I think they are just open at the bottom. My idea was to use a propeller, like a small PC fan wheel or a model building prop, or maybe out of a hairdryer.
Spray etcher
2004-07-21 by cruizzer77
Hi, I m currently building my own spray etcher of the rotating perforated tube type. The most difficult problem is to get the fluid up that tube. Does anyone
Re: Peel & Press alternative
2004-07-20 by Steve
Sorry, I meant to say You -sent- this to the Owner address, you need to send it to the list address. Steve
Re: Peel & Press alternative
2004-07-20 by coiltap2003
Please educate me, What is the Owner address? Thanks, Ken
Re: Peel & Press alternative
2004-07-20 by Steve Greenfield
You send this to the Owner address, not the list address. Several alternatives mentioned: Label paper with all labels removed. Thin glossy magazine pages.
Re: PCB Milling Software
2004-07-20 by Dave Mucha
WinQCAD is a schematic and board layout program that offers a free version for boards up to 2.3 square (60mm ? ) AND, it has a CNC feature in which you can
Re: [Homebrew_PCBs] Removing paper after toner transfer?
2004-07-20 by Alexandre Souza
... from ... I ve told you... TIME Magazine paper is the best. Just tear a page from your weekly time magazine, and run it thru the laser printer. Is the
Re: [Homebrew_PCBs] OT: Toner transfer pcb ON A TV SHOW
2004-07-20 by Stefan Trethan
Well, honestly i expected more experiece at reading your name. ST On Tue, 20 Jul 2004 12:33:43 -0500, Thomas P. Gootee
Re: [Homebrew_PCBs] Removing paper after toner transfer?
2004-07-20 by Stefan Trethan
You can use foam rubber to rub the paper off. It doesn t work that much better than a toothbrush. For mounting that steel plate, i d use 2 flat steel pieces
OT: Toner transfer pcb ON A TV SHOW
2004-07-20 by Thomas P. Gootee
Everyone, See the email below, that I received yesterday. The TV show that mentioned my name, in reference to making PCBs, is now being subtitled in Hebrew,
Removing paper after toner transfer?
2004-07-20 by Thomas P. Gootee
... Hi all. The latest type of paper that I ve been using for toner transfer (the Staples Picture Paper ) is a little more difficult to remove from the board
RE: Anybody tried a large flatbed laminator for toner transfer?
2004-07-20 by Thomas P. Gootee
RM (and everyone), It looks like all of the problems are solved and the big Seal Commercial 210M laminating press can now make perfect toner transfers! I
Re: PCB Milling Software
2004-07-20 by crankorgan
I use TurboCad and then ACE the DXF file. You can also use Eagle. See this link. http://mynock.dhs.org/pcbmilling/index.shtml