Re: [Homebrew_PCBs] Re: Again on tinning!
2010-09-19 by mlerman@ix.netcom.com
... I use it all the time - seems to work fine. Mark
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Re: Again on tinning!
2010-09-18 by acidblue
Has any one have any experience with MG Chems. liquid Tin? http://www.mgchemicals.com/products/421.html Seems a lot easier to use. Here it is at Mouser:
Re: Direct Laser Printing on the cheap
2010-09-18 by Andrewdavid.mathison
Just as an (interesting?) aside, many years ago, Siemens had a Cold Fusion process on their ND3 Laser Printers that they sold from about 1983 onwards. The
Re: Direct Laser Printing on the cheap
2010-09-18 by sentientnz
I actually thought I was looking for a 5n when I went digging in the cupboard - was a little surprised to find it was a 2200. The 5n appears to be pretty
Re: [Homebrew_PCBs] Direct Laser Printing on the cheap
2010-09-18 by Andrew Leech
That s amazing news, thanks for the heads up. I ve got a laserjet 5n which appears to be a pretty similar form factor. Does the 2200 have the fold down paper
RE: [Homebrew_PCBs] Direct Laser Printing on the cheap
2010-09-18 by Andrew Volk
Can you put up details of your mod on the Yahoo site? Could you elaborate on removing the drum... , etc.? Thanks _____ From: Homebrew_PCBs@yahoogroups.com
Direct Laser Printing on the cheap
2010-09-17 by sentientnz
I saw the thread concerning the mod of the Lexmark E260 and was inspired to have a go. Not wanting to waste any money, I dug around in the junk cupboard and
Re: [Homebrew_PCBs] Eagle: diodes in SOT23 package
2010-09-17 by Slavko Kocjancic
... Where you got that in sot23? Tipicaly is in MELF or MINIMELF. Maybe that is reason you not find it. Othervise the standard diode library has 1N4148 and has
Eagle: diodes in SOT23 package
2010-09-17 by Don
Does anyone know which, if any, libraries for Eagle have a 1N4148/1N914 diode in an SOT23 package. Also how about a BAV70 dual diode, SOT23? I downloaded a
Re: need recommendations for free simple 2D CAD program
2010-09-16 by gandolfreefer
Thanks guys, very much. I will try them, but it turns out I was very wrong about one thing: I thought I didn t need 3D, but it turns out 3D is very important
Re: [Homebrew_PCBs] Re: thinking of routing....
2010-09-15 by Leslie Newell
With supported rails the only time you need to increase the size is if you increase the load. Increasing the overall size of the machine a bit isn t going to
Re: [Homebrew_PCBs] Re: thinking of routing....
2010-09-15 by Herbert E. Plett
Not at all true. If you lengthen a rail you will also have to step up the size - more expensive!
Re: [Homebrew_PCBs] need recommendations for free simple 2D CAD program
2010-09-14 by Slavko Kocjancic
... I think the TurboCAD is better. In my opinion is easier to learn have more functionality and is cheaper (free). .... and as I remember sometime ago I was
Re: [Homebrew_PCBs] Re: Again on tinning!
2010-09-14 by Larry Battraw
On Mon, Sep 13, 2010 at 5:57 AM, Malcolm Parker-Lisberg ... To sum up, unless you are using circuits that are going to be affected by very minute amounts of
Re: [Homebrew_PCBs] need recommendations for free simple 2D CAD program
2010-09-13 by rocko
I ve tried it. It s not bad, just go through the tutorials and your good to go. I ve found a few using Google.
Re: [Homebrew_PCBs] need recommendations for free simple 2D CAD program
2010-09-13 by Branko Badrljica
... ... I m novice on this field, so this might be shot in the dark, but has anyone tried QCAD from Ribbonsoft ? It is available also for Linux and
Re: [Homebrew_PCBs] need recommendations for free simple 2D CAD program
2010-09-13 by Slavko Kocjancic
... Try TurboCad LE (Learning edition) It s old and just will do what you need (and more). Free... NOT trial (no limits/ no time limits) Maybe not simplest but
RE: [Homebrew_PCBs] Re: thinking of routing....
2010-09-13 by Tony Smith
Yep, even if you ve got a lathe or similar weighing several tonnes, it ll still flex when you lean on it. Note that as far as bending goes, a pipe & a solid
Re: [Homebrew_PCBs] need recommendations for free simple 2D CAD program
2010-09-13 by Malcolm Parker-Lisberg
Two to try CadStd: Site seems to be down loday, I use this one mosly as it is dead easy to use. Solidedge
Re: [Homebrew_PCBs] need recommendations for free simple 2D CAD program
2010-09-13 by Donald H Locker
Check Ribbonsoft s QCad product. Regard, Donald. -- Plain Text email -- it s an accessibility issue () no proprietary
need recommendations for free simple 2D CAD program
2010-09-13 by gandolfreefer
Hey guys, I just need to download a dead-easy, intuitive free CAD to make simple mechanical drawings for machine shops here to make parts for me. Nothing
Re: [Homebrew_PCBs] Re: Again on tinning!
2010-09-13 by Malcolm Parker-Lisberg
Alessio The high impedance present due to electroless tin manifested itsself on a sample and hold 14 bit A to D circuit and associated amplifier. Six boards
Re: [Homebrew_PCBs] Re: thinking of routing....
2010-09-13 by Leslie Newell
Don t go too small. Most of the cost goes in the bearings, motors, electronics, spindle etc. Increasing the length of the rails and screws/belt doesn t add
Re: [Homebrew_PCBs] Re: thinking of routing....
2010-09-13 by Leslie Newell
You ll be surprised how little force is needed to give a noticeable amount of deflection. If you ever get hold of one of these machines, move it to the middle
Re: thinking of routing....
2010-09-13 by gandolfreefer
Thanks. I do so love vendors who make me search from top to bottom for all those little tabs......
Re: [Homebrew_PCBs] Re: Again on tinning!
2010-09-13 by Bob Macklin
I just checked a PCB that was tinned with Datak TINNIT . There is no measurable resistance between adjacent traces. Bob Macklin K5MYJ Seattle, Wa. Real
Re: [Homebrew_PCBs] Re: Again on tinning!
2010-09-13 by Alessio Sangalli
... Do you have more data on this? This is chemistry, I am not qualified to understand the process for which the tin may deposit on the board, but: - is this
Re: [Homebrew_PCBs] Re: Again on tinning!
2010-09-12 by Andrew Leech
For what it s worth, I ve been using Cool-Amp silver plating powder for a little while on my pcb s now, it s so much easier than any chemical tin plating I ve
Re: Has anyone Ever Experienced with XRay and Printed Circuit boards?
2010-09-12 by fredbutz
I ve spent a lot of time on finding a film. So far the best thing I ve found is clear tranparencies and a die sublimination printer. It doesn t heat the
Re: [Homebrew_PCBs] Re: Again on tinning!
2010-09-12 by Malcolm Parker-Lisberg
It does deposit tin on the FR4 surface, and will prove problematic if you have high impedance circuits, it also causes problems when the board is conformally
Re: Again on tinning!
2010-09-12 by designer_craig
Not to worry, this electroless tin solution works by a redox reaction with the copper and does not deposit any tin on the epoxy. I used it for years and never
Re: thinking of routing....
2010-09-12 by gandolfreefer
Yes, good points, Les. Frankly, while I appreciate very much the suggestions here to various sites for kits, I have no intention whatsoever of actually
Again on tinning!
2010-09-12 by Alessio Sangalli
Hi, I was about to place an order for the precision scale and the chemicals needed for tinning but: - I use the H2O2 + HCl method for etching What was not
Re: [Homebrew_PCBs] Re: thinking of routing....
2010-09-12 by Herbert E. Plett
... guaranteed, but only if you put a 3HP router on the Z axis and try to cut through steel. if you use a reasonable router and don t work metal, the flex is
Re: [Homebrew_PCBs] Re: thinking of routing....
2010-09-11 by Howard Chester
I ve just checked out the site and all the spec are listed under the specifications tab ?? If you scroll down below the picture there are various tab
Re: [Homebrew_PCBs] Re: Has anyone Ever Experienced with XRay and Printed Circuit boards
2010-09-11 by Mark Lerman
Most xray film is designed to work with screens in a cassette. The screens, located both on the front and rear of the cassette convert the xrays to visible
RE: [Homebrew_PCBs] Re: thinking of routing....
2010-09-11 by Tony Smith
I ve brought more than few bearings off VXB, not just 608 s. 608 s are cheap because they re the most common bearing on the planet. What you found is correct,
Re: [Homebrew_PCBs] Re: thinking of routing....
2010-09-11 by Leslie Newell
By the time you add all of the options to get a running machine it is nearer $1000. Also it is uses those horrible cheap unsupported rails with Oilite
Re: thinking of routing....
2010-09-11 by gandolfreefer
Thanks, these look very good indeed. The suggestions just keep getting better and better...at this rate, I ll get paid to get a 3D router! Best, Charlie
Re: thinking of routing....
2010-09-11 by gandolfreefer
Tony, outstanding link. Thanks. The same bearings from McMaster Carr are twenty times the money. :-0 Turns out the specs on the ABEC bearings has only to do
Re: oldie but newbie mystery of the universe
2010-09-11 by gandolfreefer
Slavko, Thanks very much for your detailed response. I am intrigued, and a little surprised, that you use any glossy advertising that just comes in the mail,
Re: [Homebrew_PCBs] Re: thinking of routing....
2010-09-11 by Herbert E. Plett
look at http://www.probotix.com/FireBall_v90_cnc_router_kit/
Re: Has anyone Ever Experienced with XRay and Printed Circuit boards
2010-09-10 by garydeal
... Maybe... -Since the silver halides in x-ray film retain their inherent blue/UV sensitivity, you d be able to expose the film without having to blast them
Re: [Homebrew_PCBs] Re: DLP DS Update
2010-09-10 by mlerman@ix.netcom.com
James, I guess I have no problem with that. The information is a bit dated in that the conversion can be done much more simply - see the posts by Jim - but
Re: DLP DS Update
2010-09-10 by jamesmichaelnewton
Mark, would you be willing to allow me to convert that PDF to HTML and post it on the site at massmind? PDF s are nice, but they are dead... meaning that they
Re: [Homebrew_PCBs] Metal -- Etchant Compatibility
2010-09-10 by Leon Heller
... Monel is a nickel alloy: http://en.wikipedia.org/wiki/Monel As it also contains copper and some iron, I wouldn t use it. Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] Metal -- Etchant Compatibility
2010-09-10 by Leslie Newell
Titanium works fine with CuCl2 or FeCl. Most of the others won t though I have no experience with Monel. Les
Re: [Homebrew_PCBs] Metal -- Etchant Compatibility
2010-09-10 by Leon Heller
... Titanium should be OK. It s often used when making PCBs. Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] Metal -- Etchant Compatibility
2010-09-10 by Stefan Trethan
I think titanium is the only choice but I don t know about monel. The PCB holder in my tank was made using a titanium rod, since professional etching tank
Metal -- Etchant Compatibility
2010-09-10 by designer_craig
Any one know what metals would be compatable with CuCl2/H202 etchant for use in the etchant tank? Choises: Aluminum Carbon Steel 18-8 stainless steel 303