Re: [Homebrew_PCBs] 400 Hz for quill motor
2002-05-30 by JanRwl@AOL.COM
High-end professional PCB drills may be pneumatic motors (capable of RPM s on up into the hundreds of thousands of RPM!), but the need for a compressor and the
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Re: [Homebrew_PCBs] Laser verses Inkjet
2002-05-30 by dg140@freenet.carleton.ca
Hi Scott. What is meant by straight through path? thanks, Charles --
Re: [Homebrew_PCBs] Re: Laser verses Inkjet
2002-05-30 by Adam Seychell
I ve found the inkjet ink, inkjet transparency and inkjet printer settings can play a *big* role in how well the image gets printed. The Epson transparencies
Re: [Homebrew_PCBs] Laser verses Inkjet
2002-05-30 by Scott Hendershot
Don t know, but, Epson is releasing a new printer with a straight through path, 1440 dpi and can accept media up to 1.5 mm thick. Perhaps there is a way to
Re: Laser verses Inkjet
2002-05-30 by tedinoue
I can comment on my own experience using Epson Inkjet printers (Stylus Photo 1200 and Stylus 1160) vs. a Sharp Al1041 laser system. I measured items printed on
Re: complicated boards
2002-05-29 by crankorgan
Hi Ken, My hardest board so far has 12 ICs 2 Transistors 32 diodes 15 resistor 1 parallel port connector and 17 caps. All on a single sided 4 X 6 board.
Re: Using EDM to cut PCBs, Silver resist?
2002-05-29 by Alan Marconett KM6VV
Hi Curt, If it scrubs off, fine! Do you think it cut a single pad? I think that might be the worse case. Or possibly the small text sometimes written on a
complicated boards
2002-05-29 by Randy Knutson
Hi everyone: Just out of curiosity I was wondering what the most complex board anyone on this group has ever made... Homebrew style and complicated being
Re: Using EDM to cut PCBs
2002-05-29 by curt_rxr
... the ... Hi Alan, The effluvium would be colloidal copper in water. It should clean up when you scrub the board prior to plating ( I think!? ) I was
Laser verses Inkjet
2002-05-29 by dg140@freenet.carleton.ca
What is the general consensus; is a Laserjet, or Injket better for photoetching? If laser printing is clearer, it also has the danger of melting the overlay
Tilting the quill to cut PCBs
2002-05-29 by Steve Greenfield
All I ask is that you change the subject line to match. Looking forward to it! Steve ... __________________________________________________ Do You Yahoo!?
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-29 by JanRwl@AOL.COM
In a message dated 28-May-02 12:18:30 Central Daylight Time, ... You ASKED for it! It will take me a while to type this up. Maybe will show tomorrow? Jan
RE: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-28 by HARP
As long as your thinking of a way to make a PCB s one would think all ideas could and should be expressed. Yes some are maybe questionable ideas but they stir
Re: Tilted cutting head
2002-05-28 by crankorgan
Hi Group, One must tilt the cutting tool not the axis. On my machine I was hoping to get away with just using a pipe wrench. That would tilt the whole axis.
Tilted cutting head
2002-05-28 by Steve Greenfield
Yes, why not? Steve ... __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup
Re: Using EDM to cut PCBs
2002-05-28 by crankorgan
Curt, Rather than say it won t work. I would suggest a copper washer foot that rides on the PCB. This is the return contact. The copper washer would ensure a
New file uploaded to Homebrew_PCBs
2002-05-28 by Homebrew_PCBs@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Homebrew_PCBs group. File :
Re: [Homebrew_PCBs] Using EDM to cut PCBs
2002-05-28 by Alan Marconett KM6VV
Hi Curt, Interesting idea, but I d be concerned about the contamination of the board with the arc eroding of the isolation cuts. Alan KM6VV
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-28 by Tony Jeffree
... Jan - Sounds pretty much on-topic to me, given the need for high speed spindles for mechanical etching, drilling etc. Regards, Tony
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-28 by Dwayne Reid
... I am not the list owner but as far as I can tell, if it relates to or aids in making home-brew PC boards, post away! Do give it descriptive subject,
Re: [Homebrew_PCBs] Using EDM to cut PCBs
2002-05-28 by Steve Greenfield
You would -really- have to plan the cut path carefully. As soon as an area is cut free from wherever your contact point is at, you can no longer cut that area.
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-28 by JanRwl@AOL.COM
I respect the need to keep ON TOPIC , and the pain it can be for a LONG message to appear, in which only a small % may have interest, even IF well-ON-topic.
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-28 by JanRwl@AOL.COM
In a message dated 27-May-02 12:55:04 Central Daylight Time, ... Good! Then you must have one of those air pencils , not the 1/4-inch die-grinder .
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-28 by JanRwl@AOL.COM
In a message dated 27-May-02 07:35:14 Central Daylight Time, hugh@adams.net ... Sounds like a winner, so long as an AIR SOURCE is not wanting! I just went
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-28 by JanRwl@AOL.COM
In a message dated 27-May-02 06:57:16 Central Daylight Time, ... John: This, of course, would make the kerf-width same in any direction, but it would leave
Re: [Homebrew_PCBs] winboard pcb Link Correction
2002-05-28 by Hans Wedemeyer
http://www.cadsoftusa.com/ ... ADVERTISEMENT ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] winboard pcb
2002-05-28 by Hans Wedemeyer
Hi, I use EAGLE (http://www.cadsoftuse.com) it can INVERT if needed. Have you considered using transparencies ? I do all the time. Hans W ... [Non-text
Using EDM to cut PCBs
2002-05-28 by curt_rxr
Hi list, Has anyone used EDM to cut the traces on a PCB? You would still have to drill through holes, but with surface mount parts the number of holes would
[Homebrew_PCBs] winboard pcb
2002-05-28 by Randy Knutson
Greetings: I have a question about pcb software: Traditionally when I make circuit boards I use a software package from ivex called winboard pcb. The only
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-28 by Russell
... I have a vacuum pump that filters out the oil mist exhaust with a paper air cleaner. You could try running your exhaust hose into a cheap auto oil or air
Re: Has any tried to tilt the boards?
2002-05-28 by adam_seychell
... is ... As Tony Jeffree pointed out the Dremel collet is a cheap n nasty design. From memory it used a aluminium ( white ) collet that was so badly
Re: Cost per board
2002-05-27 by crankorgan
Hi Derek, It costs me $10 to make a 4 X 6 board drilled. I sell them for $30. The bit is $7, the board is $2 and the drill is $1. In business you mark things
RE: [Homebrew_PCBs] Cost per board
2002-05-27 by High Tech
John I still don t understand why you don t use the chemical etching method? I have been making PCB for years that way. Here are two reasons I use a chemical
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by Brian Pitt
howbout a dental handpiece for higher spindle speeds the catalog at http://www.dhrdental.com seems to have some fair deals on the generic canister type
Has any tried to tilt the boards?
2002-05-27 by Alan Marconett KM6VV
Hi Fred, It might work to use a ball end mill on the inclined table, to give the cutter some surface speed. This should be able to cut in any direction, as
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by Dwayne Reid
... Hmm . . . the ones that I have came with a 1/8 collet. They won t take a 1/4 collet - the output shaft is too small. My 1/8 shaft PC drills fit just
Re: Has any tried to tilt the boards?
2002-05-27 by Alan Marconett KM6VV
Hi Hugh, Listies, I found a one-line entry for the Pencil Grinder, but no additional information. 307-0119 54,000 RPM FORCE PENCIL GRINDER $69.95 I have
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by Hugh Prescott
Enco www.use-enco.com has a 54K rpm pencil air turbin in this months specials. about US$ 60 plus shipping. Air CFM not stated. uses 1/8th shank cutters. Enco
Re: Has any tried to tilt the boards?
2002-05-27 by crankorgan
Jan, What if you used a carbide ball mill? Tilting the board or bit would expose the board to the bussiness end of the bit. The side of the ball cuts better
Cost per board
2002-05-27 by crankorgan
Hi Gang, My goal is to come up with a way to make circuit boards fast and cheap! There are PCB houses out there that supply a program and fast turnaround. For
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by Adam Seychell
... From memory the Dremel I had used a aluminium ( white ) collet that was so badly designed that it didn t sit neatly in its holder. The thing could move
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by Tony Jeffree
... I suspect this is to some extent inherent in the design of the collet. The parallel shank at the rear of the collet is intended to help align the axis of
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by JanRwl@AOL.COM
In a message dated 26-May-02 21:18:25 Central Daylight Time, ... Exactly! MY experience as well! Jan Rowland [Non-text portions of this message
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by JanRwl@AOL.COM
I can t BELIEVE no one (including me!) has yet pointed out that tilting the boards would be of use for the point starting this thread ONLY to cut tracks
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by JanRwl@AOL.COM
In a message dated 26-May-02 20:26:46 Central Daylight Time, ... Dwayne: Those have a ¼ collet, so you would have to DO something for PCB-drills, and I
Re: Has any tried to tilt the boards?
2002-05-27 by alenz2002
... The Dremel I once had was so out of round ... made ... Adam, I checked the runout on my Dremel a while back, and my first reaction was, Dang, I
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by Adam Seychell
... What about an industrial electric die (straight) grinder ? They are somewhat larger than Dremel but this ain t a problem if mounted in a good press. At
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by Steve Greenfield
... Are you talking about those pencil air die grinders I was talking about before, or is this something else? Both Harbor Freight and I think Grizzly have
Re: Has any tried to tilt the boards?
2002-05-27 by crankorgan
Hi Dwayne, They work great if you have a compressor. The last time I checked compressors are over $100 used. If I had a compressor I think I would make a tiny
Re: [Homebrew_PCBs] Re: Has any tried to tilt the boards?
2002-05-27 by Dwayne Reid
... John - have you had a chance to try out those real inexpensive air power die grinders sold by Harbor Freight? They appear to be identical to the ones I