Re: Alignment for double-face boards
2010-04-07 by James
... Second that, I did exactly this recently, only I was using a bright flashlight. It was easy and the alignment came out perfectly on the first try.
Messages
Browse messages
Page 209 of 707 · 35337 messages matched
Re: [Homebrew_PCBs] Re: Alignment for double-face boards
2010-04-07 by Dylan Smith
For TT, I don t do anything at all complicated. All I do is print the two toner transfer sheets. Hold them face to face with a light behind them, bright enough
Re: Alignment for double-face boards
2010-04-07 by awakephd
I have tried both of the procedures described below, with varying results. The last board I did, however, I kept having trouble getting everything to line up
Re: What are the latest paper recomendations...
2010-04-07 by awakephd
If it is the same paper that I am currently using -- it sounds the same, but I don t have the part number in front of me -- then I have found that it is
Re: [Homebrew_PCBs] Re: Alignment for double-face boards
2010-04-07 by Harvey White
... I ve done both. I find it easier to align two made boards than to align two pieces of pulsar paper and expect them to keep alignment during the runs
Re: What are the latest paper recomendations...
2010-04-07 by sailingto
... The print on the paper doesn t seem to affect much - it transfers to the copper, but is on top of the toner, not between toner and copper so doesn t affect
Re: [Homebrew_PCBs] Re: What are the latest paper recomendations...
2010-04-07 by Piers Goodhew
The thing that s always held me back is the presence of all that existing print on mag/catalog paper. I just think it would ... affect toner adhesion, and
Re: What are the latest paper recomendations...
2010-04-07 by sailingto
... I d sure like to find some of that magazine paper - the mag paper I ve used is a slick glossy type and does a good toner transfer, but is a good bit harder
Re: Alignment for double-face boards
2010-04-07 by sailingto
I have used that method and it does work good - Just seems to be more hassle than doing a single double sided copper board. For critical alignments it could
Re: [Homebrew_PCBs] Re: What are the latest paper recomendations...
2010-04-07 by Harvey White
... Possible that the laminator is not hot enough or does not have enough pressure. 10 times is a bit more than I use, I do 8x. Make sure that your laser
Re: [Homebrew_PCBs] Re: Alignment for double-face boards
2010-04-07 by Harvey White
On Wed, 07 Apr 2010 02:20:19 -0000, you wrote: I have a supply of .023 board available, single sided. To make use of that, I put each side on a piece of board.
Re: Alignment for double-face boards
2010-04-07 by sailingto
That sounds like a very good procedure - I just might try it. I usually drill a .021 hole in the corner mounting holes, with a tiny hole thru the same mounting
Re: [Homebrew_PCBs] Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by Leon Heller
... High-speed is best with tungsten carbide drills. My drill only does 18,000 rpm. Leon -- Leon Heller G1HSM
Alignment for double-face boards
2010-04-06 by Alessio Sangalli
Hi, what is your technique to properlu align double-face boards? I am using toner transfer and a laminator. So far thge best method I ve found is: 1) print
Re: What are the latest paper recomendations...
2010-04-06 by sailingto
... Price is why I took so long to try it myself - but once I figured the cost per PCB (3 X4 typical?) was less than 5 cents USD (this is with reusing same
Re: [Homebrew_PCBs] Re: What are the latest paper recomendations...
2010-04-06 by Alessio Sangalli
... Unfortunately I cannot say I m too happy with this paper. It leaves a lot of residue and I need to work with my thumb for a good ten minutes to clean up a
Re: What are the latest paper recomendations...
2010-04-06 by Chris
Thanks, I will give this stuff a try. Regarding the pulsar paper, it has worked okay for me too, but the price is a drawback. That gets things pretty close to
Re: What are the latest paper recomendations...
2010-04-06 by James
... I still get the best most consistent results using catalogs that come in the mail. I get loads of junkmail printed on that really thin glossy stuff that a
Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by James
... I find I get the best results doing a quick jab, using a high speed carbide bit with a drill stand I built out of a little precision slide it works great.
RE: [Homebrew_PCBs] Re: What are the latest paper recomendations...
2010-04-06 by Jim Barnes
Hi, The only trouble I ve had, in my limited experience, with Pulsar paper is when I followed Pulsar s directions. They say to run it through their laminator
Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by sailingto
... That is the same I use - an el cheapo small drill press with visible runout (not much, but visible) on spindle at 3200 RPM. I switched to carbide bits and
Re: What are the latest paper recomendations...
2010-04-06 by sailingto
... I think that is the same HP Presentation paper I ve used - the number looks familair, and the image of the package looks the same. My experience is the
Re: What are the latest paper recomendations...
2010-04-06 by sailingto
... OOooops! you are correct - I sure talked about it a lot but no names... Ooops! Ken
Re: What are the latest paper recomendations...
2010-04-06 by awakephd
Ken, if you check your previous post, you will see that you left out Pulsar toner transfer paper -- you just said it is better .... Having seen many
Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by awakephd
Absolutely agreed -- as I posted just now (before I read your post), I know that what I m using is far from ideal. I have plans to make a high-speed spindle
Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by awakephd
Thanks, I ll give that a try. My personal experience suggests more a matter of not getting the board really on center than of it wandering off while drilling,
Re: What are the latest paper recomendations...
2010-04-06 by bebx2000
HP Color Presentation Paper works like charm for me. Details from the package: Hp Color presentation Paper, Glossy 8.5x11 34 lb 95 Brightness 300 sheets
Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by christiansen_alex@hotmail.com
... AT www.Eurocircuits.com there are a guide , called design guidelines, In this you can find many ideas on what is the normal practice for PCB layout . alex
Re: What are the latest paper recomendations...
2010-04-06 by sailingto
... AS I said, it depends - is cost a factor? How many boards per year? As I said, Pulsar toner transfer paper is a better for toner transfer than anything
Re: [Homebrew_PCBs] Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by Chris Maness
... I was able to adjust my lands in the CAD drawing. They are all beefy now. 80mils, and the inner hole is 30mils. These should be OK. I will be
Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by twb8899
... I drill the holes first then laminate dry film resist. UV expose with a film negative, develop the image, etch and strip the photo resist. The copper pad
Re: [Homebrew_PCBs] Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by Leon Heller
... I often use teardrops. Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-06 by Harvey White
... Carbide bits do not bend, they just break. This is the first example I have seen where this is an advantage. High speed spindle is a very good idea, 20K
RE: [Homebrew_PCBs] Re: What are the latest paper recomendations...
2010-04-06 by Steve Maroney
I don t recommend press n peel blue. I ve tried it and am not happy with the results . Yes, 99% of the toner transfers, but fixing that 1% with a touch up
RE: [Homebrew_PCBs] Re: What are the latest paper recomendations...
2010-04-06 by Steve Maroney
Well which paper ? I don t see where you specify. Best Regards, Steve Maroney Business Computer Support, LLC Mobile Phone:504-914-4704 Office Phone:
Re: What are the latest paper recomendations...
2010-04-06 by sailingto
Boy does that question always open up a can of worms! A lot depends on how many boards and what size you do per year. It is the best by far - just floats off
Re: [Homebrew_PCBs] Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by Bruce Parham
... The trick is to not try to drill the whole thing in one pass; the tip gets loaded and will wander off course. Take a few pecks with each only going 5-10
Re: [Homebrew_PCBs] Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by Chris Maness
I think I am going to go with the big ol fatty 80 mil pads. Most of the pads in my CAD program are already that size. I just had to change a few. Regards,
Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by awakephd
In my relatively limited experience, one of the key factors is how precisely you can drill. My most recent board has .045 diameter via pads, drilled with a
What are the latest paper recomendations...
2010-04-05 by Chris
Hi everyone, I know this question keeps popping up but by now I think we all realize that what product worked last year isn t so good this year. The paper
Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by Chris
As others have pointed out, it is dependant on many other factors. If you are doing surface mount parts, the pad needs to be about 10 mils greater in width
Re: [Homebrew_PCBs] Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by Harvey White
... Through hole parts, possibly .040 to .066, big parts (power diodes), larger. Depending on the process, that typical value can be smaller. IMHO, toner
Re: [Homebrew_PCBs] Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by Leon Heller
... It still depends on your technique and equipment. Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by Paul Mateer
A standard requirement for pad sizes is a 5 mil annulus. This means there must be .005 all around the hole (i.e. a 28 mil hole would require a 38 mil pad).
Re: [Homebrew_PCBs] Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by Chris Maness
I am planning on using a positive photo resist board, and using a .8mm drill bit. Chris (a n00b) KQ6UP ... [Non-text portions of this message have been
Re: [Homebrew_PCBs] Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by Leon Heller
... It depends on your technique. Leon -- Leon Heller G1HSM
Re: Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by James
... That s like asking how long is a piece of string. The minimum size depends on far too many factors, what method are you using to make your boards, and what
Minimum Pad Size for Homebrew Single Sided Boards?
2010-04-05 by Chris Maness
What is the minimum pad size (in mils) for home made PC boards? (Single Sided). Thanks, Chris Maness [Non-text portions of this message have been removed]
Re: another layout question
2010-04-05 by buckeyes1997
I also use Easy-PC at work and its really nice. Wish it output G-code but thats just a wish list item. Matt
Re: Anyone in USA ever order parts from Farnell?
2010-04-05 by logicresearch
Here in New Zealand we never use Farnell or RS unless there is no other source for whatever we need, and that includes international suppliers. Farnell and RS