Re: [Homebrew_PCBs] Re: Pick/Place (was:through hole P-n-P ?)
2004-04-29 by Stefan Trethan
... That is all nice and true. But for me it seems a reliable indexing mechanism with a sufficient number of bays is so much work it is not worthwile. You can
Messages
Browse messages
Page 600 of 707 · 35337 messages matched
Re: [Homebrew_PCBs] Re: wire-wrap
2004-04-29 by Roy J. Tellason
... Got more than one S100 box here, and it would rather surprise me if one of those backplanes got wire-wrapped, they re that straightforward. Some of the
Re: [Homebrew_PCBs] Pcb milling machine
2004-04-29 by Roy J. Tellason
... Loading as I type this... :-) ... I ll probably get back to you on this.
Re: [Homebrew_PCBs] Re: Pick/Place (was:through hole P-n-P ?)
2004-04-29 by Stefan Trethan
... agreed. ... Hmm how did they manage to fit different-size chips on one reel? Anyway, seems to complicated for me. I think my approach with the small
RE: [Homebrew_PCBs] Re:laser jet consistency and registration
2004-04-29 by Dave Hylands
The real problem with laser printers and backup is that the paper physically changes size between printing the front and back side. This is especially true in
Re: Pick/Place (was:through hole P-n-P ?)
2004-04-29 by ballendo
Hello, Yep. Called tape reel part sequencing. You can order reels pre- sequenced for your boards from the larger distributors. Ballendo ... their ... only
Re: Pick/Place (was:through hole P-n-P ?)
2004-04-29 by ballendo
Stefan, What you re suggesting CAN work. It just comes back to your original concern. Because it will now take a LOT of extra programming to account for the
Re: Pick/Place (was:through hole P-n-P ?)
2004-04-29 by Dave Mucha
... pick ... the legs ... In my search for a shop to do small runs of assembling boards, I found one that detailed how they did P-n-P. First, forget
Re: [Homebrew_PCBs] Re: wire-wrap
2004-04-29 by Russell Shaw
... It sounded vaguely like pcbwest. The boards were made for gear at my last job, before i even worked there.
Re: [Homebrew_PCBs] Re: solder paste - cnc dispenser
2004-04-29 by Russell Shaw
... The tape from reels has a row of holes. The reels sits on a shaft with a simple friction hub. The tape is fed between two rollers for initial tape
Re: [Homebrew_PCBs] Re: solder paste - cnc dispenser
2004-04-29 by Russell Shaw
... The reason for the large machine is that as well as for drilling and milling, 100 reels of components uses up a bit of length. ... I hadn t really
Re: [Homebrew_PCBs] Re: Pick/Place (was:through hole P-n-P ?)
2004-04-29 by Stefan Trethan
... indexing means you are going to move the strips, right? I wonder how you plan to peel off the tape, i think it is definitely WAY harder to do this than
Re: Pick/Place (was:through hole P-n-P ?)
2004-04-29 by ballendo
D@^# I typed a lot of replies this evening! ... Yep. saw that. ... A good idea to use the less than full reels? Definitely. We are a hobby and small shop
Re: solder paste - cnc dispenser
2004-04-29 by ballendo
Ask this question at the TurboCNC yahoo group... Download TurboCNC s manual at Dakeng.com Download the manual for mach2 at www.artofcnc.ca Ballendo ...
Re: cnc solder paste - software
2004-04-29 by ballendo
... Not necessary, but... ... ...you ve just described the EXISTING drill cycle. Why not use it? (see i still know no gerber because you don t tell me where to
Re: [Homebrew_PCBs] Re: Pick/Place (was:through hole P-n-P ?)
2004-04-29 by Stefan Trethan
... I did exactly that and you are correct... Could not find the eagle ULP, was not sure if it exists, i will try again. A later post shows that orcad is just
Re: Pick/Place (was:through hole P-n-P ?)
2004-04-29 by ballendo
... Stefan, PLEASE have a look at the ULP s used with Eagle. They ALREADY have one for pick and place... (And if you re using OrCAD, I d bet--with every
Re: solder paste - cnc dispenser
2004-04-29 by ballendo
... Russell, I m interested in how you plan to feed the parts? And how you intend to orient them? Sounds like it ll be a nice machine. I ve excerpted the part
Re: Pcb milling machine
2004-04-29 by ballendo
Bard, That s a nice bridge style machine. Why did you leave the upper part of the z axis so long? (your low gantry won t let you take advantage of it, and it s
Re: [Homebrew_PCBs] Re: solder paste - cnc dispenser
2004-04-29 by Stefan Trethan
Ok i will do that.. But i want to read up on general cnc programming, g-code and stuff. I could find some very specialized lists of command for certain
Re: solder paste - cnc dispenser
2004-04-29 by ballendo
ST, read everything the manufacturers in a given field have in their literature. On their website... Trico and EFD are two of the big players in Dispensing.
Re: [Homebrew_PCBs] Re: cnc solder paste - software
2004-04-29 by Stefan Trethan
... ah, i see... But is it really necessary to use drill cycles? I mean if it prooves to be any awkward to use why not simply write a short length of code
Re: [Homebrew_PCBs] Re: back to solder paste - cnc dispenser - G-code
2004-04-29 by Stefan Trethan
In fact, here s a bit of background on why they re ... I did wonder why canned cycles, but i certainly didn t expect THAT. ST
Re: cnc solder paste - software
2004-04-29 by ballendo
... There are several different drill cycles. Drill with a dwell is one of them (G82). The dwell is set in milliseconds. For drilling this is used to be sure
Re: back to solder paste - cnc dispenser - G-code
2004-04-29 by ballendo
... Stefan, The canned drill cycle is what s called modal . That means that once it s called it stays in effect until something else replaces it. Like a
Re: solder paste - cnc dispenser
2004-04-29 by ballendo
... That s news to me... I m still working on it, but I didn t START working on it when THIS thread commenced... Seems I m a bit farther along than you think.
Re: solder paste - cnc dispenser
2004-04-29 by ballendo
Russell, Tell us about it! Thank you in advance. Ballendo
Re: cnc solder paste - software
2004-04-29 by ballendo
Hello, ... Got him already. Working on it. For my machine users... Won t be free, but not too expensive either. ... No need to remember , just use
Re: ECAD Software Recommendations
2004-04-29 by ballendo
Yes, The DOS circad I ve been using has 16 drawing layers. So the BOARD layers might be as few as 8 or as many as 14... I forgot to add that the DOS version is
Re: [Homebrew_PCBs] Re: back to solder paste - cnc dispenser - G-code
2004-04-29 by Stefan Trethan
... Maybe dave has max. 100 Units per minute, then it would be the same. Where can i read up on gerber? ST
Re: back to solder paste - cnc dispenser - G-code
2004-04-29 by ballendo
In Homebrew_PCBs, Dave Mucha wrote: ... Nope. F30 means feed the axis or axes at a vector velocity of 30 UNITS PER MINUTE.
Re: wire-wrap
2004-04-29 by ballendo
Russell, Do you remember the name of that company? I remember once seeing something like that at Nepcon, or PcbWest... Thank you in advance, Ballendo ... setup
Re: OxyClean or Hydrogen peroxide ?
2004-04-29 by ballendo
Dave, Actually what the MSDS tells you is that the only hazardous ingredient is Potassium Hydroxide. And that it occurs in a 10-30% volume within the
Re: [Homebrew_PCBs] Pick/Place (was:through hole P-n-P ?)
2004-04-29 by Stefan Trethan
Just checked the how do you get a pick and place file question. Asked the orcad help and it says go to create component report and you get a file like
Re:laser jet consistency and registration
2004-04-29 by ballendo
Hello, In a previous life I was a copier service tech. Prior to laser printers, but as most know now photocopiers use the same process. We used to have a heck
Re: [Homebrew_PCBs] Pick/Place (was:through hole P-n-P ?)
2004-04-29 by Stefan Trethan
... I agree, I have no clue how the industrial machines manage to get the legs in the holes. I further see no reason why one should try such a thing. If you
Direct Printing Etch Resist (was Re: Standard inkjet inks for etch resist?)
2004-04-29 by ballendo
Steve, Which ones? Ballendo
Re: Software Recommendations
2004-04-29 by ballendo
Sure. Why not? Ballendo ... really practical
through hole P-n-P ? was Re: wire-wrap
2004-04-29 by ballendo
Roy, I think it would be MUCH harder to make a homemade through hole pick and place! (To the degree that I won t even be trying...) Ballendo
Re: [Homebrew_PCBs] Re: solder paste - cnc dispenser
2004-04-29 by Stefan Trethan
On Thu, 29 Apr 2004 18:36:48 +1000, Russell Shaw wrote: ... Ok, well, i see our design goals a a bit far apart. However, one thing it
Re: [Homebrew_PCBs] Re: solder paste - cnc dispenser
2004-04-29 by Russell Shaw
... Hi, I didn t intend to get anyones hopes high. I ve designed it, and tested most components/ideas in isolation, but haven t built the whole thing. It has
sorry for the fatfingers today
2004-04-29 by mdgolfbum
hit the wrong key when responding to the digest instead of clipping i ended up sending the whole thing by accident. i immediately went to the site to delete it
Re: [Homebrew_PCBs] Re: wire-wrap
2004-04-29 by Hugh Prescott
Actually I believe that the patent holders, Gardner Denver / Cooper Industries did produce an automated wire wrap machine years ago. Was used to WW backplanes
Re: [Homebrew_PCBs] Re: OxyClean or Hydrogen peroxide ?
2004-04-29 by mpdickens
Snickering as I write this... KOH (Potassium hydroxide aka pot ash...) mixed with h202 and a little hcl will eat all sorts of things (Some of which would
Pcb milling machine
2004-04-29 by Bard
Hello All I made some PCBs in my Home Build CNC milling machine. Look the results: http://www.vabsco.com/bardhp/joao/ Im free to ask questions... []´s Bard
Direct Printing Etch Resist (was Re: Standard inkjet inks for etch resist?)
2004-04-29 by Alan J. Franzman
... I never said it did, and that wasn t the point of my post. The point was that some people are going through a good deal of effort cutting up casings and
Re: [Homebrew_PCBs] cheap solder paste source
2004-04-28 by Stefan Trethan
this minute got 15gram at ebay for 2.5eur. normally pay well above 10eur at mail order and there comes a tip with the ebay syringe. Hope it is not a 100 years
Re: [Homebrew_PCBs] Re: OxyClean or Hydrogen peroxide ?
2004-04-28 by Stefan Trethan
... Well, you don t exactly need the O2. The oxygen is not engaged in etching as i understand it. It only frees the clorine from the HCl, building H2O along
Re: OxyClean or Hydrogen peroxide ?
2004-04-28 by Dave Mucha
... First attempt at chemicals. When did it ... All the time. more if I stirred it. ... the ... it ... for a ... is incompatible ... issue. ... expert - we
Re: multi layer
2004-04-28 by Dave Mucha
... Using the A3977 chip, I found that the power connectors are in the corners and the ground n the centers And the supporting circuityr was getting to be a