Re: CuCl Tank and silicone
2010-04-26 by designer_craig
Heat welded HDPE or solvent welded PVC would be the best. Years back I built a tank from plywood that I coated with a couple layers of polyester resin and
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RE: [Homebrew_PCBs] CuCl Tank and silicone
2010-04-26 by Roger Blair
I bought some white ABS sheet and ABS #2354 solvent from Tap Plastics and made a small ~12x10x2 tank, partly heat formed and partly solvent glued. I use, and
Re: [Homebrew_PCBs] CuCl Tank and silicone
2010-04-26 by GARY WEBB
If I were building an etching tank I would contact Master Bond to ask what adhesive/sealant they would recommend. I d be surprised if they don t have a
Re: CuCl Tank and silicone
2010-04-26 by Ben L
... If this is the same stuff that I tried one time a plastic coating that sprays on like paint. I have used it for other things as a protective coating and
Re: CuCl Tank and silicone
2010-04-26 by Ben L
What about GOOP It is made by Eclectic Products Just tried going to their webpage to be sure I got the right link but can not seem to connect to the page.
Re: [Homebrew_PCBs] CuCl Tank and silicone
2010-04-25 by lists
In article , ... I ve been wondering about suitable materials myself. I have a very old tank
Re: [Homebrew_PCBs] CuCl Tank and silicone
2010-04-25 by Stefan Trethan
Since it has happened several times now, and this one was glued really well, I must assume it is incompatible. What is interesting is that it is a very slow
Re: [Homebrew_PCBs] CuCl Tank and silicone
2010-04-25 by anachrocomputer
... At last week s Dorkbot Bristol, we had a talk on making PCBs (by UV exposure method) and the speaker mentioned this. He d used silicone sealer on an
CuCl Tank and silicone
2010-04-25 by Stefan Trethan
Slowly but surely I get the impression silicone is just not suitable to make CuCl tanks with. The current one has held some years, but finally sprung a leak as
Hybrid of Inkjet & Toner Method
2010-04-25 by g3umt
Hi, I m fairly new to the group and finding your post s very useful. I have purchased and modified an Epson S21 printer and have been experimenting with
Flex PCB - polyamide copper clad ETCHING HELP
2010-04-25 by divisleep
I bought a lot of polyamide copper clad to experiment with, but the thing is that when i etch it with Ferric Chloride a shiny electrically resistive layer
Re: [Homebrew_PCBs] Re: Laser Printer shrinks pcb size
2010-04-24 by Piers Goodhew
I m phenominally late to this party, but you are aware that Acrobat s default behaviour is shrink to fit ? Turn that off and you should be in business (albeit
Re: Laser Printer shrinks pcb size
2010-04-24 by Ben L
Believe Dip Trace can rescale, never needed to use it so I could not say if it would work well for this. I prefer photo process myself, get much better and
Re: Cut FR4 with a band saw?
2010-04-24 by Ben L
The best type of saw I have used for cutting PCB s is a bench size or small table saw with a wet/dry diamond blade. You ll need a good Vac system with a fine
Re: [Homebrew_PCBs] Laser Printer shrinks pcb size
2010-04-22 by Stefan Trethan
Target 3001 also has correction factors, seaparate ones for x and y. ST
Re: [Homebrew_PCBs] Laser Printer shrinks pcb size
2010-04-22 by Leon Heller
... The Easy-PC software I used to use had an adjustment for that. I m not sure if the current version has it, though. Leon -- Leon Heller G1HSM
Re: Cut FR4 with a band saw?
2010-04-22 by sailingto
Paul, I must commend you on a job well done. That is a NICE setup.... maybe one of these days when i get time I might try something like that. Good work!
Re: Laser Printer shrinks pcb size
2010-04-22 by andrewmv@ymail.com
I know Eagle also provides a mechanism to rescale the printer output, though I ve never had to use it. -Andrew
Re: Laser Printer shrinks pcb size
2010-04-22 by awakephd
Hmmm ... as far as I know I have not had any shrinkage like this; I need to do some tests to see! But to answer your question, yes, KiCad does have the ability
Re: Cut FR4 with a band saw?
2010-04-22 by awakephd
Ken, you are entirely correct -- getting this saw just to cut a few PC boards would seem like major overkill. In my case, I already had the saw to support my
Re: [Homebrew_PCBs] Laser Printer shrinks pcb size
2010-04-22 by michael tenore
You can try running your paper through the laser printer with a document with a period (.) printed in the upper left corner, This will pre-shrink your paper!
Re: [Homebrew_PCBs] Laser Printer shrinks pcb size
2010-04-22 by DJ Delorie
My laser printer does the same thing. PCB (gEDA) has a place to put in printer calibration numbers to compensate for this, because yes, it does mess up large
Laser Printer shrinks pcb size
2010-04-21 by w6mikk
My old trusty HP LaserJet 5P printer slightly shrinks the printed pcb image on paper when I printed a pcb image from a PDF file. On screen pbc measures 5.2 cm
Re: Cut FR4 with a band saw?
2010-04-21 by sailingto
Well, if I cut a very narrow 1/8 sliver off, yea it curls a lot... even a 1/4 slice will curl some, but for normal cuts, both sides stay flat. As to how long
Re: [Homebrew_PCBs] Re: Toner transfer problems
2010-04-21 by Kerry Wentworth
I suppose it depends on where you live. Do they recycle where you live? Friends, neighbors or relatives might help you out. Bookstores and such often have
Re: [Homebrew_PCBs] Re: Toner transfer problems
2010-04-21 by Paul Mateer
Now I guess I have a reason for all those free trade magazine subscriptions! ... -- Paul Mateer, AA9GG Elan Engineering Corp. www.elanengr.com NAQCC 3123, SKCC
Re: [Homebrew_PCBs] Re: Toner transfer problems
2010-04-21 by Andrew Villeneuve
We don t really get any magazines at our house, either - photo paper was more readily available. Most business with lobbies or waiting rooms have old magazines
Re: [Homebrew_PCBs] Re: Toner transfer problems
2010-04-21 by Piers Goodhew
... Actually, we don t get any magazines and not a lot of catalogues (I think the letterbox stuffers think the house is abandoned) - where is everyone sourcing
Re: [Homebrew_PCBs] Re: Toner transfer problems
2010-04-21 by Kerry Wentworth
Cool! Glad we could help. The bleeding may be caused by your iron being too hot. Less heat is required to get through magazine paper than it takes to get
Re: Toner transfer problems
2010-04-21 by andrewmv@ymail.com
I made a run with the magazine paper, and got dramatically better results. The Dell laser printer doesn t have a straight though paper path, but I had no
Re: Cut FR4 with a band saw?
2010-04-21 by James
... I ve used the similar but much bigger heavier paper cutter at work to cut FR4 when the receptionist is not nearby. It works fine and does leave both pieces
Re: [Homebrew_PCBs] Re: Cut FR4 with a band saw?
2010-04-21 by Steve
Does the paper cutter warp the piece of PCB that you cut off? Just wondering if both sections that result from a cut remain flat? Steve ... -- Read The Patriot
Re: Cut FR4 with a band saw?
2010-04-21 by sailingto
Those are nice bandsaws - but sure seem a bit of overkill for tiny little PCB - well, my boards anyway are always less than a 4 X6 size. I use the HF paper
Re: Toner transfer problems
2010-04-20 by James
... Well it s free, that s the first thing it has going for it, and a walk out to my mailbox on any given day has a good probability of yielding some so it s
Re: Laminator question- HF
2010-04-20 by James
... Pick one up and let us know how it does, you may be able to modify it easily to boost the temperature. If all else fails you can use it to laminate, I make
Re: My new photo resist spinner
2010-04-20 by James
... I didn t mean automatic, I just thought it might be nice to have a smooth full range control. Point taken about the simplicity though.
Re: My new photo resist spinner
2010-04-20 by designer_craig
You really can t use a speed controller as you need to adjust the speed as the resist spreads out and the only to do that is by eyeball. There are just too
Re: Laminator question- HF
2010-04-20 by sailingto
I have not, but it sure looks good - specs say 300F max temp which would be ok for TT - 320F max would be better, but that might do the trick - and for $23 -
Re: [Homebrew_PCBs] Re: Cut FR4 with a band saw?
2010-04-20 by Steve
Thank you. There s a Harbor Freight nearby, I ll take a look. Steve ... -- Read The Patriot Post Vertitas vos Liberabit http://patriotpost.us/subscription/
Re: [Homebrew_PCBs] Re: Toner transfer problems
2010-04-19 by Harvey White
... That s its advantage. Seems that the clay coating allows toner to transfer easily. Not tried it though. ... They are, but I modified someone else s
Re: My new photo resist spinner
2010-04-19 by James
... The DC fan motors can be controlled with a simple PWM circuit, 555 driving a mosfet or transistor will do the job. The shaded pole motors in AC powered
Re: My new photo resist spinner
2010-04-19 by designer_craig
Interesting links. The thicknesss of the water based Aq3000 I am currently spinning mostly depends on the speed and viscosity since the evaporation is fairly
Re: [Homebrew_PCBs] Re: Toner transfer problems
2010-04-19 by Kerry Wentworth
Again, everybody seems to get different results. I stick a piece of magazine paper in my HP LaserJet 1100 and print it. Never had a problem. I use the
Re: Toner transfer problems
2010-04-19 by awakephd
It is interesting the variety of ways that people have of doing TT. I m sure others are like me -- once you try something and it works, you stick with it. In
Re: [Homebrew_PCBs] Re: Toner transfer problems
2010-04-19 by Slavko Kocjancic
... It s tinner. The heat comes trought faster. And near dissolve in watter. .. and free. But it s difficult to print on it. As tend s to wrinkle. I just tape
Re: [Homebrew_PCBs] Toner transfer problems
2010-04-19 by Andrew Villeneuve
To add my own experimentation to the pool, I did a couple of runs using iron-on T-shirt transfer paper. I d never heard of anyone using this before, but it
Re: [Homebrew_PCBs] Toner transfer problems
2010-04-19 by Andrew Villeneuve
I first read about the process with the glossy photo paper method, which seemed to be much more prevalent on a number of sites. It wasn t until I dug though a
Re: [Homebrew_PCBs] Toner transfer problems
2010-04-19 by Kerry Wentworth
Yeah, when I first found out about this toner transfer thing, I started a file with all the conflicting advice on the web, preheat or don t preheat board,
RE: [Homebrew_PCBs] Toner transfer problems
2010-04-19 by Steve Maroney
Photo resist, photo resist, photo resist !!!! Best Regards, Steve Maroney Business Computer Support, LLC Mobile Phone:504-914-4704 Office Phone: 504-904-0266
Re: [Homebrew_PCBs] Re: Toner transfer problems
2010-04-19 by Kerry Wentworth
Magazine paper transfers heat better and is easier to soak off. And a lifetime supply is as near as your mail box. I m using a B&B electronics catalog. I