William, 
I have used various brands of both ferrules and crimp tools. Most of the 
ferrules I have used are German-made by the Weidmuller brand, these seem to be 
private labeled by Greenlee and others. Highly recommended. I’ve also had good 
luck with less expensive ferrules sold through various silly nonsense-brands on 
Amazon. 
I recently upgraded to a Rennsteig automatic crimping tool and it’s very smooth 
and nicely made. It adjusts automatically up to #6AWG, though one has to fiddle 
with the tension lever a little bit to keep from crimping too deeply on smaller 
ferrules.

Luke Christy
Renewable energy consultant

NABCEP Certified PV Installation Professional™: 

Solar Gain Services, LLC
PO Box 531
Monte Vista, CO 81144
sgsrenewab...@gmail.com
719.588.3044


> On May 18, 2021, at 15:41, William Miller <will...@millersolar.com> wrote:
> 
> 
> Friends:
>  
> Do any of you have a preferred make, model and supplier of ferrule crimps and 
> crimp tool you would recommend?
>  
> Thanks in advance,
>  
> William Miller
>  
> Miller Solar
> 17395 Oak Road, Atascadero, CA 93422
> 805-438-5600
> www.millersolar.com
> CA Lic. 773985
>  
>  
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