How to Attach Spade 10 AWG Solid Copper

I've been following this thread & want to say to solder then crimp is not considered prima facie.

Reb, your initial posts seems to convey crimp over the soldered area, which in essence does not allow direct metal to metal contact. Now I'm getting you are referring to two different contact areas-one for crimping & one for soldering? Your pics don't indicate this. At least I don't see what you're talking about.

There are a few ways to test the reliability of a soldered and/or mechanical joint. I don't think cable companies have their connections subject to shear debonding tests. Here the conventional wisdom is what has worked in the past still works.

Then again, the coolness of DIY is for one to experiment & try other methods; however; that does not mean you're right and everybody else is wrong.

It never ceases to amaze me how much information you read on the internet that is outright wrong

Driver,

E-mail me your address and I'll send you a finished sample so you can evaluate the connection.

reb

I uploaded 3 more pictures. Plated surface area of spade removed with carbide, wire clamped to spade with locking hemostat and then soldered, then crimped metal to metal contact and finished with heat shrink.

http://s301.photobucket.com/albums/nn76/reb1208/?action=view¤t=IMG_1430.jpg&newest=1

http://s301.photobucket.com/albums/nn76/reb1208/?action=view¤t=IMG_1431.jpg&newest=1

http://s301.photobucket.com/albums/nn76/reb1208/?action=view¤t=IMG_1432.jpg&newest=1

And know, I'm not saying I'm better than anyone else. Just showing how I make this connection.

Hi Reb,

OK, now I see what you're getting at. That connection looks very solid. The only thing about that style is you can't utilize the curve of the spade for a contact area. I'm sure there are spades w/a large enough pad you could do that & still have the space for full contact.

I don't do shear debonding tests or instability analysis or any other type of testing using electrical or mechanical devices. I would think a digital analysis at the microscopic level would show any fractures that would lead to failure but I believe those methods are used w/PCB's.

I appreciate your offer to send me a sample but I couldn't test any more that you can.

Driver,

That spade is small and not meant for audio speakers or amps. It was just a cheapo I had lying around to demonstrate my DIY method. On a larger audio quality spade, the circular surface area would be available as I would solder further back.

reb