Re: [Homebrew_PCBs] 4 Layer boards
2009-12-14 by Trevor White
Thanks for the responses. My reasons for asking are a mix really. I am an engineer by trade but also I am just really being curious. I do not have a specific
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[Homebrew_PCBs] 4 Layer boards
2009-12-14 by Andrew Mathison
Dear Trevor White with regards to your question about 4 layer boards (which are easily 4 times more expensive to have made,in my experience, than double sided
Re: [Homebrew_PCBs] 4 Layer boards
2009-12-14 by Simao Cardoso
... It depends, are you using true prepreg laminates or common fr4? In this list some people accomplished it or at least in a homebrew way. My first thoughts
Re: [Homebrew_PCBs] 4 Layer boards
2009-12-14 by DJ Delorie
I use double-sided tape when I do four-layer boards. They don t end up as stiff as real boards, but it s good enough for me.
4 Layer boards
2009-12-13 by Trevor White
Hi all. I have been looking into making 4 layer boards. I have most stages sorted but the big stumbling block is the bonding of the layers together. It seems a
Re:WTD: simple laminator temp control circuit
2009-12-13 by RDHeiliger
SparkFun Electronics has a control for reflow ovens that will work for laminators as well. This is a kit, you need to assemble and program. The PIC16F88 comes
[Homebrew_PCBs] WTD: simple laminator temp control circuit
2009-12-13 by Andrew Mathison
Dear Howard please look here, maybe this can help:- http://www.delorie.com/electronics/laminator/ Regards Andy [Non-text portions of this message have been
Re: WTD: simple laminator temp control circuit
2009-12-13 by Dave
... Hi Howard. Not a circuit as such but I modified my texet laminator by removing it s thermostats and replacing them with the thermostat from a household
WTD: simple laminator temp control circuit
2009-12-13 by Howard
Hi all Has anyone got a simple temp control circuit for my laminator, it only go to 125c and i need about 170c for HP toner ? maybe something using a pic chip
Re: [Homebrew_PCBs] Re: Buying a laser printer HP P1005 or P1006 ?
2009-12-08 by Harvey White
... Which would be nice except for one thing. Some Brother laser printers have high temperature toner, which will not work well with a normal iron or
Re: Buying a laser printer HP P1005 or P1006 ?
2009-12-08 by bobhuish2003
Thank you all for the Laser printer info! I bought a HP 1006 from Office Depot for $89. Finished my project, a simple PIC controller for my solar LED light,
Re: [Homebrew_PCBs] Ammonium Persulfate - poisonous?
2009-12-08 by William Alford
... it s illegal to put in drain in many municipalities and they can track it to your drain line and levy significant fines. and for sure don t put it in your
Re: Ammonium Persulfate - poisonous?
2009-12-07 by shklaw75
Or if you are in Victoria, there is a mobile service that goes around that you can take it to. http://www.resourcesmart.vic.gov.au/for_households_1965.html
Re: [Homebrew_PCBs] Does this laminator can be used for PCBs ?
2009-12-07 by DJ Delorie
... I added some more info to that page about what the different temperatures are useful for, too. I can add more specific temperatures if people find uses
Re: [Homebrew_PCBs] Does this laminator can be used for PCBs ?
2009-12-07 by Erik Knise
GBC makes great laminators. They are distributed throughout the world. Most document laminators should be able to to toner transfer or photo-resist. DJ s
Does this laminator can be used for PCBs ?
2009-12-07 by teknochaman
Hi Everyone, Googlin found this link: http://www.youtube.com/watch?v=QaP2Flx1fKc From the air, wondered if could be of any help for you guys. I ve seen
Re: [Homebrew_PCBs] Ammonium Persulfate - poisonous?
2009-12-07 by Stefan Trethan
Pulling just one random root killer MSDS shows Copper Sulfate Pentahydrate 99%. It s really kinda absurd that you can possibly dump this into the drain legally
Re: [Homebrew_PCBs] Ammonium Persulfate - poisonous?
2009-12-07 by kabowers@NorthState.net
... Go to your local hardware and look for sewer root killer. I ve got a bottle down in the basement. Keith Bowers WB4LSJ- Thomasville, NC
Re: [Homebrew_PCBs] Re: 105 u copper needed
2009-12-07 by Stefan Trethan
I think you are best off having this made somewhere, unless you can find the 105u base material and just need to etch it. It will be difficult to find because
Re: 105 u copper needed
2009-12-07 by christiansen_alex@hotmail.com
Could a tin layer do the same with the better conductivity ? I could tinplate the board chemically, I guess.Have seen that it is sold ,but have never tried.
Re: [Homebrew_PCBs] Re: 105 u copper needed
2009-12-07 by Stefan Trethan
It is true that most board houses would usually plate it up, but there is nothing that says it can t be etched. Of course undercut will be a lot more severe,
Re: [Homebrew_PCBs] Ammonium Persulfate - poisonous?
2009-12-07 by Stefan Trethan
They do let copper salts go into the environment at times. Someone found copper chloride firebox cleaning sticks, and copper sulphate was (is?) used as
Re: [Homebrew_PCBs] Ammonium Persulfate - poisonous?
2009-12-07 by Piers Goodhew
I ve wondered about this, too, and I ve read a few things somewhere - i.e. I can t actually swear they re true, but they seem to add up: Ammonium Persulphate
RE: [Homebrew_PCBs] Ammonium Persulfate - poisonous?
2009-12-07 by tim.wade@l-3com.com
Read somewhere - can t find it now of course - that you should let it evaporate so that you effectively end up with copper sulphate crystals then place sealed
Re: [Homebrew_PCBs] Re: 105 u copper needed
2009-12-06 by Simao Cardoso
... You mean Negative print the resist, copper pattern plating up to 105µm, metallic resist plating, resist stripping, metallic resist compatible etchant and
Re: [Homebrew_PCBs] Re: 105 u copper needed
2009-12-06 by Alexis Shaw
I think that in order to do 3 oz one must use semi-additive etching. that is put doen the photoresist and then electrroplate, strip the resist and etch the
Re: [Homebrew_PCBs] Re: 105 u copper needed
2009-12-06 by Kerry Wentworth
... Copper is measured in ounces per square foot, not per square inch. 3 ounces per square inch would be 15 mm thick (not 1.5) and a 12 inch square board
Re: 105 u copper needed
2009-12-06 by christiansen_alex@hotmail.com
... No...I dont have any ideas.. think I had some at 70 u many years ago.. and dont remember any difficulties at that time.. it was with tape layout but else
Re: 105 u copper needed
2009-12-06 by christiansen_alex@hotmail.com
... thanks all for intersting reply :) and Leon ,yes I know its not easy to get..that s why I asked here,as I have noticed that much can happen here in this
Re: [Homebrew_PCBs] 105 u copper needed
2009-12-06 by leon Heller
... From: Simao Cardoso To: Sent: Sunday, December 06, 2009 9:30 PM Subject: Re: [Homebrew_PCBs] 105
Re: [Homebrew_PCBs] 105 u copper needed
2009-12-06 by Simao Cardoso
... What a mistake, I may dislike imperial units but this was, how to say, a shoot in the _foot_? :
Re: [Homebrew_PCBs] 105 u copper needed
2009-12-06 by leon Heller
... From: To: Sent: Sunday, December 06, 2009 6:35 PM Subject: [Homebrew_PCBs] 105 u copper
Re: [Homebrew_PCBs] 105 u copper needed
2009-12-06 by Simao Cardoso
... 105µm copper pcb laminates are most known as 3 oz/in². About getting it, I am sure that you as a pcb professional can overcome that. But one useful
105 u copper needed
2009-12-06 by christiansen_alex@hotmail.com
hello members I have a customer that, maybe order a few pcb at me, but he ask for 105 u copper layer ,singlesided . Does anyone here have some board with this
Re: [Homebrew_PCBs] Ammonium Persulfate - poisonous?
2009-12-06 by Stefan Trethan
On it s own it s Xn rating, no idea what it would be with the copper. Anyway Xn is enough that you want to read the MSDS.
Re: [Homebrew_PCBs] Ammonium Persulfate - poisonous?
2009-12-06 by leon Heller
... From: Anthony Shipman To: Sent: Sunday, December 06, 2009 2:54 PM Subject: [Homebrew_PCBs] Ammonium
Ammonium Persulfate - poisonous?
2009-12-06 by Anthony Shipman
... BTW how toxic is this stuff (Ammonium Persulfate). The container had no warnings on it. I have some etchant with dissolved copper in it. Is it poisonous?
Re: [Homebrew_PCBs] Re: AQ3000 Waterborne Photoresist questions
2009-12-05 by Larry Battraw
Sounds like pretty good stuff, I m just glad this water-based stuff doesn t use any solvents or VOCs and just uses soap and water for cleanup and sodium
Re: [Homebrew_PCBs] Re: AQ3000 Waterborne Photoresist questions
2009-12-05 by Larry Battraw
I tried it with some 240 mesh screen (all I have on hand) and it stuck to the board and had to be pulled off very firmly which produced large bubbles and
Re: amonium peroxide how long lasting
2009-12-05 by designer_craig
I am not sure if you mean Ammonium Peroxide or Ammonium Persulfate but I had some quantity of the latter sitting around for 15 years and it all went bad and
Re: AQ3000 Waterborne Photoresist questions
2009-12-05 by designer_craig
Back in the 70 s and 80 I used Shipley AZ111 which was solvent based. I built a spin coater that consisted of an old fractional hp fan motor mounted in a 16
Re: AQ3000 Waterborne Photoresist questions
2009-12-05 by jcarlosmor
The viscosity differs so much to try applying it by screen printing. However someone told me that AQ3000 is available now in SP (screen printing). Formerly,
Re: [Homebrew_PCBs] Re: AQ3000 Waterborne Photoresist questions
2009-12-05 by Andres Hernandez
Hello Larry Why don t you try applying the coat by using a screen blank mesh ?.... is the best way for having a even coat in every place of the board....
Re: [Homebrew_PCBs] Re: AQ3000 Waterborne Photoresist questions
2009-12-05 by leon Heller
... From: Larry Battraw To: Sent: Saturday, December 05, 2009 3:07 PM Subject: Re: [Homebrew_PCBs] Re:
Re: [Homebrew_PCBs] Re: AQ3000 Waterborne Photoresist questions
2009-12-05 by Larry Battraw
Hi, no I am not using a real roller-coating machine, just hand tools. On the suggestion of another member of this group I tried spinning the board after
Re: AQ3000 Waterborne Photoresist questions
2009-12-05 by jcarlosmor
Are you using a real roller-coating machine? Those photoresists (AQ3000) are intended for professional use and generally does not accept any kind of
Re: [Homebrew_PCBs] AQ3000 Waterborne Photoresist questions
2009-12-04 by Larry Battraw
Thanks Robert, I definitely have pondered trying to spin it but I don t have an old turntable lying around. I d use a motor and try to rig up a platform but
Re: Buying a laser printer HP P1005 or P1006 ?
2009-12-04 by billshat44
I use the HP p1006 with Staples Basic Gloss Photo paper and it turns out quite nice. I got the printer at Egghead with free shipping a year and a half ago and
Taking a Scotch TL901 apart
2009-12-04 by billshat44
I just purchased a Scotch laminator and would like help taking the cover off. I took the two screws out of the bottom of the laminator, and tried to gently
Re: [Homebrew_PCBs] AQ3000 Waterborne Photoresist questions
2009-12-03 by Robert Blumer
Larry, I used Kodak AZ111 a long time ago, not available now but I used an old 78 rpm turntable and use an eye dropper to place it on the spinning pcb