Re: [Homebrew_PCBs] How I make my PCBs -> manual drilling
2003-05-19 by Salam Gobran
thrust bearings are used to support forces in axial directions, which is the direction along the axis of the rotating part. like supporting the rotor of a
Messages
Browse messages
Page 672 of 707 · 35337 messages matched
Re: [Homebrew_PCBs] How I make my PCBs -> manual drilling
2003-05-19 by Leon Heller
... From: Stefan Trethan To: Sent: Monday, May 19, 2003 9:51 AM Subject: Re: [Homebrew_PCBs] How I
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-19 by Stefan Trethan
yes i think that s it. i never operated it, i haven t seen anyone doing that. i think this machine was no longer used beause the bearings of the drilling
Re: [Homebrew_PCBs] How I make my PCBs -> manual drilling
2003-05-19 by Stefan Trethan
hi i also thought of that initially. but i discarded it because i thought this moves the drill in a rotrary way not straight (i know this is nothing with 50cm
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-19 by Leon Heller
... From: Stefan Trethan To: Sent: Monday, May 19, 2003 8:39 AM Subject: Re: [Homebrew_PCBs] How I
Re: [Homebrew_PCBs] How I make my PCBs -> manual drilling
2003-05-19 by Adam Seychell
I made a pivoting type manual drill press. The drill motor is fixed to the end of 500 mm long arm which pivots at its end by two thrust bearings (from an old
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-19 by Stefan Trethan
i have also seen a setup where the drill came from underneath. i have no idea how you cold see it with this unit. but it looked not very expensive. wait.. now
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-19 by Stefan Trethan
18.05.2003 21:00:55, Zoran A. Scepanovic wrote: you are right. when i last thought of building a new exposure unit the uv fluorescent lamps
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-19 by Leon Heller
... I use a Minicraft drill and stand, similar to the Dremel units. It isn t very good - it s quite easy to break carbide drills. A friend of mine has a PCB
Re: [Homebrew_PCBs] Re: How I make my PCBs
2003-05-19 by Stefan Trethan
thanks jonathan. this encourages me that my new drill press would work. it is mainly built of old needle printer linear rails. i use a small dc motor as drill,
Re: [Homebrew_PCBs] Strobe lights to expose boards?
2003-05-19 by Leon Heller
... A co. making device programmers used to sell a xenon flash tube device for erasing EPROMs (probably still do). It s certainly worth trying. Leon -- Leon
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-19 by Stefan Trethan
i thought of manual drill press, moving the pcb with your hand. i know there are such devices sold especially for this task and they are qite expensive. but
Re: [Homebrew_PCBs] Re: How I make my PCBs
2003-05-19 by JanRwl@AOL.COM
Home-Brew CNC drilling of PCB s: Now that Steve has been so kind as to fix my picture and put it under FILES, it is ready for all to see at will. Click on
Re: How I make my PCBs
2003-05-19 by Jonathan W
... many people. ... file. Or a ... I ve also used ... Works well, ... drill your ... too wobbly ... Harbor ... Much cheaper, ... works ... I guess I haven t
Re: How I make my PCBs
2003-05-19 by Jonathan W
... your boards? ... diamond wheel? ... normal drill bit so that it works ... anyone ideas? ... I use a dremel tool on a dremel drill press stand with used
Re: Strobe lights to expose boards?
2003-05-19 by Jonathan W
... It s not necessarily a goofy idea -- something like it is used in some pattern generator machines to make chrome masks for semiconductor processing. The
Strobe lights to expose boards?
2003-05-19 by Steve Greenfield
I had a goofy idea once that I never followed up on. Using a camera strobe with the UV filter removed to expose photosensitive boards. The plan was to
from the Moderator- please trim replies
2003-05-19 by Steve
Please remember to trim posts. I m seeing some go by with a paragraph or even just a line or two of reply, and pages of quotes. Trim it to what needs to be
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-19 by Adam Seychell
Fluro tubes have disadvantage producing of wide angled light. In my experience this light source produces problems with light under cutting the photomask and
Re: [Homebrew_PCBs] Re: How I make my PCBs
2003-05-19 by Hans Wedemeyer
John, Is you want to cut down on the heat I have used 120Watt Plant Light reflector lamps. GE part number 120BR40/PL at the home depot for a few $$ When I use
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-19 by Hans Wedemeyer
Mike, No problem, I have also been making boards for many years. Just assume when someone tells me it can be better I would like to know what can be better
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-19 by Pancary
see my pcb ploter at www.geocities.com pancary ... From: Hans Wedemeyer To: Sent: Sunday, May 18, 2003
Re: How I make my PCBs
2003-05-19 by bjeff65
... John, Thanks for enlightening me! I find it almost amazing with such a clear disparity between the possible sources that I really haven t seen such a clear
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Mike Putnam
Hans, Don t take it wrong. I have been in the business for many years and only wanted to give you some tips. Feel free to ignore them. -Mike ... From: Hans
Re: How I make my PCBs
2003-05-18 by John Myszkowski
I can shed some light on the bulb wavelength... All regular incadescent bulbs have very little UV generating ability. They come in coated versions where mostly
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by JanRwl@AOL.COM
In a message dated 5/18/2003 9:32:17 AM Central Standard Time, ... Stephan: To your first question: WOW, you would be talking close to $100,000 (U.S.!) for a
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Stefan Trethan
it is nice to see this here. i have also seen this effect of stronger exposure in the center. i have used a setup with distance about the same as pcb with. i
Re: How I make my PCBs
2003-05-18 by bjeff65
... comment ... give more ... market use ... not so ... thing about ... trying ... florescent ... Mike, This seems like a great place to jump in. I m very
Re: [Homebrew_PCBs] Re: How I make my PCBs
2003-05-18 by Zoran A. Scepanovic
Hello bjeff65, 18. May 2003, 21:01:39, you wrote: (my comments mixed) b So I ve decided to put it in the form of a question: b If you needed to put together
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Zoran A. Scepanovic
Hello Stefan, 18. May 2003, 21:20:47, you wrote: ST it is nice to see this here. ST i have also seen this effect of stronger exposure in the center. ST i
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Hans Wedemeyer
Mike, H mm as I have pretty good looking boards and can do 5 mil all day long ! Here s an example http://hans-w.com/pcb_harwin_rivets.jpg I ve only been using
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Mike Putnam
Hans, I looked at the picture of your UV exposure setup. I just wanted to comment that I would never use the round bulb. Use the florescent tubes and your
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Stefan Trethan
i have the spray pausklar 21 here. this is a light oil which smells like the oil in orange peelings. it should make the paper transparent (to uv). i used it
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Neil
... Haven t tried the paper cutter method, but it seems to work for many people. I use either a hacksaw (takes time), then clean up with a flat-file. Or a
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Leon Heller
... ESR (http://www.esr.co.uk) sells a spray to make paper transparent. I haven t tried it. I ve heard of people using cooking oil, and tried it once; it
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Leon Heller
... I scribe it on both sides as a guide, then score it with a Stanley knife. It then snaps quite cleanly. Leon -- Leon Heller, G1HSM Tel: +44 1424 423947
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Hans Wedemeyer
Chris, I ve done a lot of tests and found the following transparencies to work well 3M CG3300 is good down to 10 mil Appolo CG7060 does 5 mil all the time. I
Re: [Homebrew_PCBs] Re: ipa, ethyl alcohol
2003-05-18 by Stefan Trethan
i see it isn t save to assume spiritus to leave alone plastics. it is quite the same as denatured alcohol, also the ingredients vary. i tried to ask the
Re: ipa, ethyl alcohol
2003-05-18 by Steve
Denatured alcohol seems to be a mixture of primarily ethanol. However, it does contain some other stuff that may be why I ve observed it affecting plastic. It
Re: Cleaning cartridges and color in floor polish for etch resist
2003-05-18 by Steve
... It is a dye. I ve got some red here, says FD&C Reds 40 and 3, adn Propylparaben (as a preservative) . FD&C Red 40 and 3 are mentioned specifically on
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Chris Graham
... I make boards almost exactly the same way, also using Eagle. I print with a Brother 5040 laser printer at 1200 dpi on overhead transparency slides. I ve
Re: ipa, ethyl alcohol
2003-05-18 by Steve
... the usual ... to use ... Over here, Denatured Alcohol is sold in hardware stores as a paint stripper for some kinds of paint. Here s a site that lists
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Hans Wedemeyer
Leon, good advice except for Easy-PC.... I spent full price on that program and found I wasted my money. Here s what I think of Easy-PC
Re: [Homebrew_PCBs] How I make my PCBs
2003-05-18 by Stefan Trethan
nice description. i have never seen this pcb material here but also have no need for it (have plenty of fr4 for.. well lets say many years.) the problem with
Re: [Homebrew_PCBs] ipa, ethyl alcohol
2003-05-18 by Leon Heller
... From: Stefan Trethan To: Sent: Sunday, May 18, 2003 12:11 PM Subject: Re: [Homebrew_PCBs] ipa,
How I make my PCBs
2003-05-18 by Leon Heller
I ve been making my own PCBs at home for about 40 years, starting by painting the pattern onto single-sided PCB material using a fine paintbrush and cellulose
Re: [Homebrew_PCBs] ipa, ethyl alcohol
2003-05-18 by Stefan Trethan
i m wondering if there is methanol in any spiritus. i think you are right, this may dissove plastics. do you think there are also other substances used or it
Re: [Homebrew_PCBs] ipa, ethyl alcohol
2003-05-18 by Leon Heller
... Denatured alcohol contains methanol, to stop people drinking it. The methanol in it might be more likely to dissolve some plastics. Leon -- Leon Heller,
Re: [Homebrew_PCBs] ipa, ethyl alcohol
2003-05-18 by Stefan Trethan
i am aware of the fact they are not the same. maybe my english is too bad but i only wondered if denaturated alcohol (called spiritus here) is ethanol. if yes,
Re: [Homebrew_PCBs] ipa, ethyl alcohol
2003-05-18 by RandyL
No, they re not the same. Ethyl Alcohol is the kind you drink. isopropanol is rubbing alcohol, and Ethylene Glycol is antifreeze. The two latter ones are