[Elecraft] Fillet
If one is in the business of building boards commercially, a fillet is expected as a sign of an acceptable joint. Does it matter? I don't know, but I suspect if it didn't, then most of industry wouldn't care about it as much as they do. My .02 and worth every penny! John ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Fillet
[EMAIL PROTECTED] wrote: If one is in the business of building boards commercially, a fillet is expected as a sign of an acceptable joint. Does it matter? I don't know, but I suspect if it didn't, then most of industry wouldn't care about it as much as they do. My .02 and worth every penny! John I did fillets on all the joints on my K2/100. I think it's easier to see a cold solder joint with a fillet on the pad. If the joint is cold you won't get a proper looking fillet. I also used enough solder on each joint to fill the pad. -- R. Kevin Stover ACØH K2/100 #4684 Reclaim Your Inbox! http://www.mozilla.org/products/thunderbird ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Fillet or not?
There are those who advocate no fillet when soldering plated thru holes. Is an obvious fillet in that instance a sign of too much solder? K3UJ === Never trim precut to length leads such as ICs and relays, and resistor packs, or crystals. These have just enough extension thru the normal fillet of solder to not be a problem ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Fillet or not?
There are those who advocate no fillet when soldering plated thru holes. Is an obvious fillet in that instance a sign of too much solder? K3UJ === With Elecraft's plated-through holes, it's at least a sign of more than enough solder. When soldering boards without plated-through holes, it's virtually impossible to have good solder flow without something of a fillet because the solder only has the copper around the opening of the hole to bond with. On Elecraft boards, if the lead is soldered *in* the hole, there's no need at all for any fillet to rise above the hole. If you're having trouble making fillets when you solder, use a smaller-diameter solder. For Elecraft boards, I never use anything bigger than .031 and I prefer .025 diameter. It's not a big deal on most solder pads, but there are places where it can cause real grief. A common one in the K2 is when soldering crystals. Excess solder will form a fillet under the crystal where you can't see it. More than one builder has agonized over a non-functioning rig until one of those hidden fillets was found under a crystal shorting out the signal path. It was a tough one to troubleshoot and was found only by removing the crystal, cleaning off the excess solder, and re-installing it. Other kits, like the KX1 and the T1, have some very close spacing in places that require virtually no bump on the soldered side of some boards for the unit to fit together and avoid shorts. Ron AC7AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Fillet or not?
I always feel more comfortable with a fillet. Without a fillet it's much more difficult to inspect the lead to be sure you have solder completely surrounding the lead. It's possible to have the hole partially filled with solder so it looks ok from one angle but the lead is not securely connected. This may be hard to see. A fillet is easier to inspect. If the height of the lead sticking out of the board is critical, it's no extra trouble to trim the fillet along with the lead. 73/ Bob - W5BIG - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Wednesday, March 30, 2005 2:21 PM Subject: [Elecraft] Fillet or not? There are those who advocate no fillet when soldering plated thru holes. Is an obvious fillet in that instance a sign of too much solder? K3UJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
