Crimping large butt connectors?

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  #1  
Old 05-22-17, 04:15 PM
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Crimping large butt connectors?

I got some NAPA 784276 Butt Connectors and I am not strong enough crimp these babies even with vise grips. I am splicing #8 stranded. Can I hit them with my 3 lb sledge?
 
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Old 05-22-17, 04:36 PM
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Well they do make hammer crimpers but their not cheap.
 
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Old 05-22-17, 05:16 PM
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The crimping tool for that type of connector is either oval or presses a dimple into one side for a good connection.
If you just squash it you may not have a secure joint.

You could try a non-insulated connector, squish it, solder and wrap with tape.
 
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Old 05-22-17, 05:26 PM
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Use a hammer type crimper. I've used them for years with excellent results.

Lincoln Electric Lug/Cable Crimping Tool-KH538 - The Home Depot
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Old 05-22-17, 06:00 PM
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I use a pair of exothermic weld crimper pliers for mine. You can't release the pliers until the full travel of the handle is made making the connection permanent.
 
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Old 05-22-17, 06:34 PM
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Thanks All

I just ordered the hammer crimper from HD. One more question: I am 72 and wondering if there will ever come a time that I don't need one more special tool? I thought I already had one of everything ever made.
 
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Old 05-22-17, 06:39 PM
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I am 72 and wondering if there will ever come a time that I don't need one more special tool? I thought I already had one of everything ever made.
No.
We can never have enough "stuff".
 
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Old 05-22-17, 08:05 PM
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4mm wire? That's 6 gauge? I bought a long handle wire crimper from HD. De Walt I believe as it's yellow and black. Like this one:
Klein Tools Journeyman Crimping/Cutting Tool-J1005 - The Home Depot

it will crimp and cut anything. Thing is long and strong, gives excellent lever.
 
  #9  
Old 05-23-17, 02:37 AM
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Igor, that sure as heck wouldn't crimp what the OP is talking about.

I once took a small pair of bolt cutters I got at a yard sale for $1 or so, the little 9-10" handled models that had really chipped and broken jaws. Ground down the sharp edges and opened a hole to 3/8". Worked great for crimping 1/2" copper pipe onto battery cables and such to act as terminals. Of course also fluxed and soldered them with a torch.
 
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