RE: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Jeff Heiss
The air grinder at Harbor Freight requires a very large, high cfm rate, compressor. A dentist drill works with small and regular size home compressors and has
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Re: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Mitch Davis
... Interesting, thanks. Mitch.
RE: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Boman33
The PCBs were clamped under a rail when forced past the milling bit. Hundreds of thousands were made. There was a VERY small transformer on the PCB and it
Re: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Stefan Trethan
Trained ants. Very useful, you know... ST
Re: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Mitch Davis
... I m curious, how did you hold the PCBs down? Mitch.
RE: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Boman33
As suggested, the little air powered grinders run about 55,000 RPM and they only cost about $20 from Harbor Freight. A lot of years ago I used the turbine from
Re: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Stefan Trethan
Do you think the dentist drill will have room to accommodate the larger collet? They do sell air powered straight grinders that will take 1/8th shanks and run
RE: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Tony Smith
... insert a 1/8 ... You can t mix & match sizes, 1/16th bits in 1/16th collets, and 1/8th bits in 1/8th collets. Seems obvious, but using the wrong size
RE: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Jeff Heiss
Dentist bits are 1/16 . PCB drill bit shanks are 1/8 . So you have to insert a 1/8 diameter shank into a 1/16 hole. Does the ER collet accommodate this?
Re: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by Boots Hughston
You can use an ER collet reducer, I use one on my mill. Boots-2b1 Sent from my iPhone ... [Non-text portions of this message have been removed]
Re: dental handpieces for copper clad drilling
2013-02-05 by Paul Mateer
I used to wrap tape around the shanks to make them fit.... -- Paul Mateer, AA9GG Elan Engineering Corp. www.elanengr.com NAQCC 3123, SKCC 4628, FPQRP 2003
Re: [Homebrew_PCBs] dental handpieces for copper clad drilling
2013-02-05 by r.d. terramir
I use a dremel or (in future I ll be using a mill with an er11 1/8 piece) to do my pcb drilling the dremel way is the royal pita, this is why I m building the
dental handpieces for copper clad drilling
2013-02-05 by Jeff Heiss
Dental handpieces (aka dental drills) would be a great way to run small drills for the #60 - #80 range. They run at 350,000 RPM, are available on Ebay, and
File - monthly.txt
2013-02-02 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change
Re: [Homebrew_PCBs] Proxxon IB/E repair note
2013-02-01 by Stefan Trethan
Thanks, I ll remember that for future reference (I hope). How much did you use the IB/E? ST
Re: DipTrace question
2013-01-31 by designer_craig
Norm, First the individual Components (schematic symbols) and Patterns (PCB foot prints) are not stored as separate files but are combined into Libraries. A
Proxxon IB/E repair note
2013-01-31 by chris
In case its of any use to folks... The proxxon I was using decided to die, so I bought another.. but I decided to take a look at the dead one to see if it was
Re: [Homebrew_PCBs] Re: DipTrace question
2013-01-31 by Norm
... Craig - I still have the original 5-1/4 disc set for the old OrCAD PCBII and SDTIII. Any tips for creating a user library for DipTrace? Now that the
Re: [Homebrew_PCBs] Re: DipTrace question
2013-01-31 by Norm
... Thank you - just what I needed. I thought I had already tried that, but evidently not. Norm [Non-text portions of this message have been removed]
Re: DipTrace question
2013-01-31 by designer_craig
Do a right click to bring up the context menu and use Flip . I was also an Orcad user, Diptrace is fairly good alternative though it does have some quirks.
Re: DipTrace question
2013-01-31 by leeleduc
... Right click on the symbol to select it and a menu will pop up. You can then select to flip it horizontally or vertically. There is a 200+ page tutorial
DipTrace question
2013-01-30 by nps0
Earlier posts got me started using DipTrace (replacing a 1988 version of OrCAD, which wasn t happy with W7 and beyond). I have run into a problem - is it
RE: [Homebrew_PCBs] Re: What size drill bits?
2013-01-30 by Rick Sparber
Tony, Interesting observation. I heard recently that we have more hand made products today than ever before. Those 50,000 workers at Foxcom are doing a lot
Re: [Homebrew_PCBs] Re: thoughts on electric paint sprayer for spray etching
2013-01-30 by Todd F. Carney
Jeff, I did not build the etcher I described, and as I now recall it wasn t shop-made at all. It was made by Kepro Circuit Systems (now defunct). I did have
RE: [Homebrew_PCBs] Re: What size drill bits?
2013-01-30 by Tony Smith
... solutions ... drill brings ... Very old, very well-known and studied problem. That s why in many cases the robots make the parts and the meatbags put them
RE: [Homebrew_PCBs] Re: thoughts on electric paint sprayer for spray etching
2013-01-30 by Jeff Heiss
I looked up the specs on the pumps. They produce about 2psi at 6 gallons per minute. They look and work like pedestal sump pumps. I guess they won t work
Re: [Homebrew_PCBs] Re: thoughts on electric paint sprayer for spray etching
2013-01-30 by Randall Morgan
Here is a link to a swamp (also called evaporative cooler) at Home Depot. They seem to be seasonal items at walmart.
RE: [Homebrew_PCBs] Re: thoughts on electric paint sprayer for spray etching
2013-01-30 by Jeff Heiss
The prices of the pumps in the spray etcher projects were $180, $77, and $100. They all appear to be water pumps but I m not sure how the builders knew they
Re: thoughts on electric paint sprayer for spray etching
2013-01-30 by mvkkeller
Jeff, The official name is Evaporative Cooler ... One source of parts online: http://www.plumbersurplus.com/Cat/Evaporative-Cooler-Pumps-Parts/1244/List
Re: thoughts on electric paint sprayer for spray etching
2013-01-29 by cunningfellow
... Jeff, Look at http://www.instructables.com/id/The-Etchinator-low-cost-spray-etcher/ The instructable also contains a link to Adam Seychells more
RE: [Homebrew_PCBs] thoughts on electric paint sprayer for spray etching
2013-01-29 by Rick Sparber
Swamp coolers are common here in Arizona but never saw one until I came here. Rick ... From: Homebrew_PCBs@yahoogroups.com
RE: [Homebrew_PCBs] thoughts on electric paint sprayer for spray etching
2013-01-29 by Jeff Heiss
I checked Walmart for immersion pump and swamp pump but did not see any listed. Could you give a reference to one online? Jeff ... From: Randall Morgan
Re: [Homebrew_PCBs] thoughts on electric paint sprayer for spray etching
2013-01-29 by Randall Morgan
A Swamp cooler is a type of air conditioning device that works by the evaporation process to cool air. They are very simple. Water is pumped to the top of
RE: [Homebrew_PCBs] thoughts on electric paint sprayer for spray etching
2013-01-29 by Jeff Heiss
Todd, I like your ideas. What is a swamp cooler pump? I am not familiar with drip irrigation spray heads. Are they like mister nozzles for gardens? Jeff
Re: [Homebrew_PCBs] thoughts on electric paint sprayer for spray etching
2013-01-29 by Todd F. Carney
... Jeff, Just to clarify, do you mean for the sprayer to resist corrosion? If you use ferric chloride, that doesn t seem likely. Maybe not even a persulfate
thoughts on electric paint sprayer for spray etching
2013-01-29 by Jeff
What are opinions on using an electric paint sprayer to spray etch a board? Could an electric sprayer be modified to run etchant so it can resist corroding?
Re: [Homebrew_PCBs] Re: Eagle PCB board layout
2013-01-29 by Harvey White
... If the traces are on the other side of the board (blue rather than red), you can run them anyway you want. You could have two independent circuits laid
Re: Eagle PCB board layout
2013-01-29 by AJ
I am definitely progressing, I have a board designed, trying to learn how to run traces on both sides of the board. I also think I need help figuring out how
RE: [Homebrew_PCBs] Re: What size drill bits?
2013-01-29 by Rick Sparber
Chris, You are a man after my own heart! I m a real sucker for simple, elegant solutions to difficult problems. The fact that you can beat CNC with a dangling
Re: What size drill bits?
2013-01-28 by chris
Rick, the drill press type tool was seven years ago.. after that I went to a CNC drilling machine based on a micro mill the latest is the proxxon hanging from
RE: [Homebrew_PCBs] Re: What size drill bits?
2013-01-28 by Rick Sparber
Chris, I was a bit confused about which pictures you were talking about. The first few showed an arrangement to hold the proxxon that involved some boards and
Re: What size drill bits?
2013-01-27 by chris
Just a footnote ... Having posted some pics of my hand drilling jig/aid thingy I decided to update it a bit with some improvements I ve been meaning to make
Re: [Homebrew_PCBs] Homemade pcb
2013-01-21 by Hari Hendaryanto
hi guys, thanks for all reponses and links, it s very helpful to me. i ll read all those links very carefully. regards hari ... [Non-text portions of this
Re: [Homebrew_PCBs] laminator roller pressure for dry film
2013-01-21 by Roland Harriston
Jeff: You might want to rethink you logic in determining laminator roller pressure for various sized PCB s Roland F. Harriston, P.D. *******************
Re: [Homebrew_PCBs] laminator roller pressure for dry film
2013-01-21 by Todd F. Carney
Jeff, It is almost always the case that a pressure specification is in psi --pounds per square inch. With paid, the board could be and inch wide or a foot and
laminator roller pressure for dry film
2013-01-20 by Jeff
For laminating dry film photoresist to copper clad, the datasheet for Riston film says to use a laminator roller pressure of 40 pounds but it does not state
How to print Mirror Image
2013-01-20 by michael tenore
I finally Figured out a easy way to get a mirror image. I started with the Info from K4GMH But my new CutePDF Writer Free Edition is different from the
RE: [Homebrew_PCBs] Re: Adobe's older CS2 programs now free
2013-01-20 by David C. Partridge
Not so, the CS2 download set is for three CDs worth of installs plus some other stuff. If you download the entire set for Windows it is 10GB, so no way can
Re: Adobe's older CS2 programs now free
2013-01-20 by tda7000
That s my assumption as well.
Re: [Homebrew_PCBs] Adobe's older CS2 programs now free
2013-01-20 by Banibrata Dutta
Have used the leaner and almost as functional FOSS equivalents of the Adobe CS2 suite for years for personal (mostly hobby) work. Adobe software used to be