Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-25 by H. Carl Ott
... I think the laser dot will be larger than the pad. And difficult to keep aligned. .043 holes .017 drill bit.
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Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-25 by Harvey White
... A dremel will work with carbide drills and the dremel stand. Having said that, the runout (wobble) on a dremel is rather nasty, and limits your ability to
Re: high-temp laminator
2010-05-25 by sailingto
You must have a Brother printer? I had one of those and ran the GBC laminator up around 400F and it sure got hot.... then one day I wasn t watching and
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-25 by Harvey L. McRae
I use my Dremel tool all the time for drilling my boards. I use a #70 drill bill. I don t even use a carbide bit and I have had no problems. Cheers. Harvey
high-temp laminator
2010-05-25 by Ryan Fobel
Does anyone know of a laminator capable of high temperature (250C/480F). I built a temperature controller for one of the GBC units, but the plastic housing
Re: light ring conversion for miniature drill press
2010-05-25 by James
... I just drilled some boards last night. I did some experimenting with the position of the lamp and found that if I placed it behind the drill stand shining
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-25 by Mark Lerman
Is a dremel adequate for drilling pcbs using carbide drills? I know it isn t good enough for pcb routing, but just for drilling?? If not, what is a good,
Re: light ring conversion for miniature drill press
2010-05-25 by Frank P
Just a thought... Don t LEDs come in flexible tubing. Couldn t you just wrap one of these around your drill press and attach it with duct tape? Seems like less
[Homebrew_PCBs] DLP DS registration
2010-05-25 by Mark Lerman
I think I ve got it about as good as it s going to get without a complete rebuild of the printer. While I haven t actually flipped a board and printed on both
Re: Flip n' Print ? (concept proposal for development)
2010-05-25 by Richard
.........Yes! Any RCL electronically grouped is physically grouped into a very tight formation during the pick and place
Re: Flip n' Print ? (concept proposal for development)
2010-05-25 by Richard
NOTE: I have the special metal CD insert for making 2.5 by 3.5 conventional circuit boards made by Full Spectrum Engineering. You can read about it here:
Re: [Homebrew_PCBs] Re: Flip n' Print ? (concept proposal for development)
2010-05-25 by Andrew Villeneuve
So you re saying that you re soldering SMD devices directly to one another on the board when possible, instead of running traces? -Andrew [Non-text portions of
Re: Flip n' Print ? (concept proposal for development)
2010-05-25 by Richard
..... an example of the conductive traces reduction ratio: 64 pin leadless QFN RFID GEN2 UHF Reader IC with all required SMDs connected
RE: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-25 by Tony Smith
Ah, and there s the tool snob. Despite that, you don t use lasers for accuracy, that s what jigs are for. Even then you need to spend the time setting it up.
Re: Flip n' Print ? (concept proposal for development)
2010-05-25 by Richard
Project update: In my modified Epson Artisan 50: http://groups.yahoo.com/group/Inkjet_PCB_Construction/photos/album/166497487/pic/list I added a very simple 15
Re: light ring conversion for miniature drill press
2010-05-25 by Ben L
... Mount your camera under the board looking straight up. Ben
Re: [Homebrew_PCBs] DLP DS Update
2010-05-25 by mlerman@ix.netcom.com
One way to do it is to have some registration holes. Print the first side, drill the registration holes, then print the second side and see if they match up.
Re: DLP DS Update
2010-05-25 by sailingto
Mark, you sure are doing some GREAT!!! work and a fantastic job of documenting to allow others to have good results. My hat s off to you and THANK YOU for
Re: light ring conversion for miniature drill press
2010-05-25 by Frank P
Carl, Another easy and cheap solution is to mount a laser pointer showing where the bit will hit the PCB.
[Homebrew_PCBs] DLP DS Update
2010-05-24 by Mark Lerman
I am now working on producing ds boards. My first test was to see if I can print multiple times on one side of a board with good registration. If I can do
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Harvey White
... In my experience, trying to locate holes and align them, no. You wouldn t b happy with the results. I d say either drill from bottom, right side up, or
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Stefan Trethan
I think even with a single sided board the light shining through the center of the pad might be enought to locate it depending on PCB material. Or one could
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Mark Lerman
I was thinking that the board would have to be upside down when you drilled it because the camera would have to see the top of the board, but you re right,
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Stefan Trethan
Actually it would be less cumbersome, because you could see the drill and not only rely on the camera. Also you can do without the clamping foot for a top down
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Mark Lerman
... Very nice solution, and an obvious (now that it s pointed out) way to go. A bottom drill with a camera sight, a modified microscope stage to hold the board
Re: light ring conversion for miniature drill press
2010-05-24 by James
... It would certainly be possible, probably easiest to use a dot. Find a cheap surplus low power HeNe laser tube. Gas lasers have far better beam quality than
RE: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Ronald Cody
In the 1970’s I owned a PCB prototyping business. We used a bottom drill for quick short runs. As the implies the drill moves up from below the board. We
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Stefan Trethan
That s because most cheap tools have a laser or two now, the lasers they use are inaccurate (not set correctly), and bright enough to blind you for the rest of
Re: light ring conversion for miniature drill press
2010-05-24 by pr0pert
A technique I ve used is a little slow for a lot of holes but accurate. What I did was mount a camera to the drill-head. the camera was aimed at the board. To
RE: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Tony Smith
Yep, that s what I was thinking of. Don t waste your time with the instructables link, you spend half your life aligning the laser. Just buy the kit in the
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by H. Carl Ott
... A camera system would be nice. Both for board drilling and possibly parts mounting. The really fancy systems (manual assist BGA pick and place) (and WAY
Re: [Homebrew_PCBs] Re: DLP files - what format?
2010-05-24 by Harvey L. McRae
This is one reason I like to share what I am doing.. In the little clinic I just put on 9 out of the 9 in attendance had never etched a board. Many had the
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Mark Lerman
I m not sure that laser pointers or lines would work well in this application. The line widths, vibration, etc might be a problem. Or they might not be. Anyone
Re: light ring conversion for miniature drill press
2010-05-24 by Andrew
Here you go: Drill press with laser: http://www.rockler.com/product.cfm?page=16449 Kit to install laser on DP:
RE: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Tony Smith
... useful. The ones with camera work off the silk screen printing, there s reference marks in the corners. Some SMD pick & place machines do that as well
RE: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Mark Lerman
The next thing would be to mount a camera on the drill so that you could position the drill properly in the center of the pad. I seem to remember someone doing
Re: [Homebrew_PCBs] Re: DLP files - what format?
2010-05-24 by Andrew Villeneuve
Slavko, Sadly, I agree entirely...the DIY culture is starting to regain a foothold amongst us young people (Check out makezine.com), but it s still far from
Re: [Homebrew_PCBs] DLP Double Sided Update
2010-05-24 by Andrew Villeneuve
Insofar as the Y axis, you could try running the motor for the paper path rollers though your microcontroller, then you could modulate the speed of the motor
Re: [Homebrew_PCBs] Re: DLP files - what format?
2010-05-24 by Piers Goodhew
41 DIY PCB must be a dying art - unless there s a Facebook group we just don t know about. PG
RE: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-24 by Tony Smith
... and mount them concentrically. Look on eBay for UFO lights or camping lights . Same thing but in a case, powered by 3 AA batteries. They have a hole
Re: [Homebrew_PCBs] Re: DLP files - what format?
2010-05-24 by Slavko Kocjancic
Very interesting.. People in this group is the older one . Seems that older people just like to do (make) something and younger just to buy. Slavko
Re: DLP files - what format?
2010-05-24 by Ben L
... 51 here Ben
Re: [Homebrew_PCBs] Re: DLP files - what format?
2010-05-24 by Andrew Villeneuve
29...no wonder everybody else on the list seems more accomplished at this than me :) -Andrew [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] DLP Double Sided Update
2010-05-24 by mlerman@ix.netcom.com
Jim, The best way to see what s happening is from the bottom, though I haven t really done that myself. Remove the paper tray and suspend the printer while
Re: [Homebrew_PCBs] DLP Double Sided Update
2010-05-24 by Jim
The two hole alignment system is a good way to align the PCB in X and Y to the carrier ... the carrier X location is known with the added sensor ... carrier Y
Re: [Homebrew_PCBs] Re: how homemade tinning?
2010-05-24 by KeepIt SimpleStupid
many years ago, I did re-flow soldering. Put the board in peanut oil and heated it. Added some solder. Wiped and then re-flowed it. I haven t tried the
Re: [Homebrew_PCBs] Re: light ring conversion for miniature drill press
2010-05-23 by H. Carl Ott
... mount them concentrically. -- carl ... Henry Carl Ott N2RVQ hcarlott@gmail.com [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Re: how homemade tinning?
2010-05-23 by Eddie Stassen
... For this method, since its electroplating, its done prior to etching. I am not sure if all etchants will work on the tin plating though. The author uses
Re: [Homebrew_PCBs] Re: DLP files - what format?
2010-05-23 by Dave Bobb
I m 33 Sent from my iPhone ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] DLP Double Sided Update
2010-05-23 by mlerman@ix.netcom.com
Hi Jim, I have a cnc pcb router that registers by 2 holes. What I thought for this was a hole near the top and a slot on the bottom of the blank pcb. I would