Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by Leon Heller
... The mini-hoof tip is shaped like a horse s hoof, with a little depression that holds a small amount of solder. It s nothing like a chisel tip. It s held
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Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by William Laakkonen
I suppose it s a matter of preference- you can t tell my soldering from paste and I do not stress the parts using a chisel tip and quick soldering- though it
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by Leon Heller
... Sorry, typo. Should have been Metcal: http://www.metcal.com/ I use a second-hand STSS power unit with the MX-500 handpiece and cartridges. Frequency is
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by Stefan Trethan
The top quality soldering tool manufacturers all call their drag soldering tips a different name. Metcal calls it mini hoof, Ersa calls it power well, I m sure
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by Stefan Trethan
I find I m just much faster with paste. It does not require a tool change for each component like hand soldering where I need to switch between holding
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by William Laakkonen
... states Metacal is a dog food brand (but then again, my dog s name is a butter brand in Finland). Can you perhaps give us this suggestion with generic
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by Leon Heller
... I drag-solder the leads with a mini-hoof Metacal cartridge. It s just as quick and no cleaning up with desolder braid is needed. Plenty of gel flux is
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by William Laakkonen
Hand Soldering any QFP requires: 1. Apply flux from mini-fluxer pen or similar 2. Position chip 3. tack solder opposite corners 4. glob solder across all pins,
Re: [Homebrew_PCBs] pizzazz pizza oven
2010-03-12 by Henry Liu
I ll find out when I get the pizzaz. There are over 300 positive reviews on amazon so it has to bake pretty well. There were some complaints that it didn t
Re: [Homebrew_PCBs] pizzazz pizza oven
2010-03-12 by Stefan Trethan
Will the pizza even get warm in this thing? Most of it is outside most of the time! Seems terribly inefficient. It does say From freezer to perfect in
pizzazz pizza oven
2010-03-12 by Henry Liu
Has anyone tried a Presto Pizza Maker for reflowing: http://www.amazon.com/Presto-03430-Pizzazz-Pizza-Oven/dp/B00005IBXJ It seems like a good possibility for
Re: [Homebrew_PCBs] traces between pins
2010-03-12 by Stefan Trethan
Buy some kapton tape and stick it there. May need to cut it into narrower strips. ST
Re: [Homebrew_PCBs] traces between pins
2010-03-12 by Henry Liu
Can t you just apply super glue to act as a solder mask between the pins? I haven t tried it but I imagine it should work. If not then heat resistant epoxy + a
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by Henry Liu
I have done some detailed thinking about fastest assembly for prototypes. I have still yet to find something better than Zeph paste in a syringe + hot air.
Re: can anybody post a pic?
2010-03-12 by sailingto
Yep, I when I ran the first paper thru it sure looked good - just a casual look and I though the toner was black as it should be. After ST I think it was
Re: [Homebrew_PCBs] traces between pins
2010-03-12 by Leon Heller
... I m coming up to 68 and my eyes aren t anything like as good as they were, but I don t have any problems with tracks between pads on my home-made PCBs. I
Re: [Homebrew_PCBs] Re: can anybody post a pic?
2010-03-12 by Piers Goodhew
That pretty much correlates with the rough traces I was getting with what I call baking paper. I think it might be due to the silicone paper not holding as
Re: [Homebrew_PCBs] traces between pins
2010-03-12 by Piers Goodhew
Hotplate soldering not an option? Traces under 0603 components not a problem that way - no bridges cos no fingers involved in the soldering. PG ... [Non-text
Re: [Homebrew_PCBs] traces between pins
2010-03-12 by Kerry Wentworth
You could try machinist s layout fluid. It s commonly available, easily removed with acetone, denatured alcohol or layout fluid remover. It seems to stand up
traces between pins
2010-03-12 by jimofc300
Hi, An couple of upcoming projects of mine will require traces between pads of 100mil through-hole headers and, probably, some TH ICs. The projects wouldn t be
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-12 by DJ Delorie
... In my case, if I need a paste stencil for a QFN-EP anyway, I ll include all the other parts and do it that way. Plus, for lots of SMT parts on a board, it
Re: [Homebrew_PCBs] Re: CIF through-hole rivets
2010-03-12 by Donald H Locker
Back when I actually did some of these things, I just placed the board in intimate contact with a flat metal (aluminum worked perfectly) surface. Metal plate
Re: CIF through-hole rivets
2010-03-12 by Ben L
I can understand what you are saying Ken and agree with what you are saying. Unless the Thruhole is tight enough to hold things in place while soldering the
Re: [Homebrew_PCBs] Re: CIF through-hole rivets
2010-03-12 by Philip Pemberton
... Too true -- and the risks of a mistyped URL are all the higher these days... (I remember the days where mistyping a URL got you an error message :-/ ) ...
Re: CIF through-hole rivets
2010-03-12 by sailingto
You are correct - I should watch my typing better. My mind gets faster than my fingers sometimes. Those are neat boxes - I saw those on ebay and almost
Re: [Homebrew_PCBs] Re: CIF through-hole rivets
2010-03-11 by Philip Pemberton
... (1st point: It s DealExtreme, not DealsExtreme) Too right. They also sell some neat component storage boxes -- they re sold for beads and small arts/crafts
Re: CIF through-hole rivets
2010-03-11 by sailingto
I found it on ebay - just might have to order a roll. I expect there would be several uses for a high temp tape like that. Isn t that DealsExtreme.com an
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-11 by lists
In article , ... Never mind, it looks like they are probably out of stock anyway. -- Stuart
Re: [Homebrew_PCBs] Cheap SMD oven, anyone?
2010-03-11 by William Laakkonen
Yipes- seems like a lot of work. I ve been working with QFP (Atmega2580, AD9951) and 0603, 0805, 1206- hand soldering is no problem using 0.015 solder and
Cheap SMD oven, anyone?
2010-03-11 by Philip Pemberton
Anyone looking for a cheap SMD reflow soldering oven? http://www.argos.co.uk/static/Product/partNumber/4230302.htm Get one of these, a solid-state relay,
Re: [Homebrew_PCBs] Re: CIF through-hole rivets
2010-03-11 by Philip Pemberton
... 3M Kapton (polyimide) high-temperature tape, silicone adhesive type. No PCB lab should be without it :) Good to about 300 Celsius (so vaguely usable as a
Re: can anybody post a pic?
2010-03-11 by sailingto
I m glad to help - you can see the difference in the Pulsar vs Parchment paper. I wish I had a HP Presentation paper sample to put there also. I do think the
Re: can anybody post a pic?
2010-03-11 by ptkwg
I see it now. And it is so much better than I can get from my samsung. I do shake the cartridge everytime before I do a series of prints although I m still
Re: can anybody post a pic?
2010-03-11 by sailingto
ptkwg, check the Photos section for a folder KenH - as soon as approved you should find a couple of photos. The toner pic has Pulsar on left and Parchment
Re: can anybody post a pic?
2010-03-11 by ptkwg
I m in another country. Just a close up photo of your board done with the p1006 will suffice. I dont think trying other types of paper would work, all the
Re: [Homebrew_PCBs] Re: CIF through-hole rivets
2010-03-11 by Harvey White
... absolutely ... Except that the rivets I have are gigantic (but low cost), work fine for big work, lousy for compact designs. 0.051 hole with needed gap
Re: CIF through-hole rivets
2010-03-11 by sailingto
Donald, I would NEVER get in a violent dis-agreement OR agreement with anyone. What has been my experience is the first side solders nicely, then when you
Re: [Homebrew_PCBs] Re: CIF through-hole rivets
2010-03-11 by Donald H Locker
I understand the principle. If the pre-headed side is soldered, though, then the other side can be soldered without the rivet falling out, right? Unless you
Re: CIF through-hole rivets
2010-03-11 by sailingto
Yep, the press is something like that, operates on the same principle. The other side must be upset to some extend other wise when you solder from other
Re: [Homebrew_PCBs] Re: CIF through-hole rivets
2010-03-11 by Donald H Locker
You wouldn t _have_ to upset the rivet. Insert rivet, solder head side, invert board, solder tails, pick up rivets whose heads weren t soldered, repeat. I do
Re: [Homebrew_PCBs] Re: CIF through-hole rivets
2010-03-10 by Philip Pemberton
... I take it you mean something more like this? http://www.megauk.com/through_hole_rivets.php The drill sizes seem a little more reasonable (0.8mm rivet needs
Re: [Homebrew_PCBs] Vacuum pickup tool suggestions?
2010-03-10 by John Coppens
On Wed, 10 Mar 2010 21:08:36 +0100 ... Just came across to a selfbuilt pickup tool: http://hackaday.com/2010/03/03/vacuum-pick-and-place-for-smd-parts/ it uses
Re: can anybody post a pic?
2010-03-10 by sailingto
Ooops - I forgot I was in Homebrew_PCB group. Darn this old age - but old age beats the alternative. I reckon I was thinking I was over in Electronics_101 or
Re: can anybody post a pic?
2010-03-10 by sailingto
Oh, I meant to mention I m using a P1006 and am happy with it. My first laser was a Brother... and Oh Brother . Ken H.
Re: can anybody post a pic?
2010-03-10 by sailingto
Where are you located? I could print a sample and mail to you. I ve not had the best of luck with some papers myself, have you tried the HP Presentation
Re: SMD caps - no marking - why?
2010-03-10 by sailingto
Thanks for the info steve. I spent a bit of time reading the links today (lunch hour!). The more I read about this, the more I wish to build one using
Re: [Homebrew_PCBs] Vacuum pickup tool suggestions?
2010-03-10 by Stefan Trethan
Typically they don t have a solenoid valve, just a hole on the handle to vent the vacuum (or not). It would be trivial to add a solenoid valve. You would
Vacuum pickup tool suggestions?
2010-03-10 by John McCormick
Does anyone have a vacuum pickup tool suggestion? I really want one with a solenoid that turns the air on/off. I was thinking I could throw it on my
can anybody post a pic?
2010-03-10 by ptkwg
can anybody post a pic of a PCB made with an hp p1006? preferably as magnified as possible, both before (with toner transferred) and after it was etched? the
Re: SMD caps - no marking - why?
2010-03-10 by alienrelics
Well, if you decide to go look, I already found two of the posts and put links in this message: http://groups.yahoo.com/group/Electronics_101/message/59728