Towertalk
[Top] [All Lists]

Re: [TowerTalk] N-connector double-D punch

To: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>, "Michael E Fox (N6MEF)" <n6mef@mefox.org>
Subject: Re: [TowerTalk] N-connector double-D punch
From: hinrgdj1@comcast.net
Date: Wed, 15 Oct 2008 20:49:03 +0000
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
An annular cutter is quicker and smoother...

http://www.blairequipment.com/Rotabroach_Cutters/rota_cutters.html

A small fractional set can be had on Epay for ~$70...very handy shop tool!

Mike K4EAR

 -------------- Original message ----------------------
From: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
> Michael E Fox (N6MEF) wrote:
> > I'm looking for what's called a "double-D" punch that is the correct size
> > for N-type connectors.  This will be used to punch holes in bulkheads for
> > installing either PolyPhaser DSXL lightening arrestors or N-type Amphenol
> > bulkhead pass-through connectors.
> >   
> I normally use Greenlee "knockout punches". The latest style split the 
> piece knocked out into two haves that look like the letter "D", but I've 
> never seen them called "double D". 
> 
> OTOH material for bulkheads is normally thick enough I just use a drill 
> bit of the proper size, be it in steel or aluminum.  IOW it's a rather 
> small hole and punches for that size use a relatively small through bolt 
> (bout 1/4" to 5/16") that can be broken trying to punch holes in 1/8" to 
> 1/4" thick, Aluminum, Copper, or steel. I've busted the bolts on chassis 
> punches for tube sockets, let alone this size and thickness.  Drill the 
> hole undersize, then work up to the proper size one drill at a time. 
> This gives a hole with relatively clean and smooth sides however don't 
> forget to debur the inside and outside. BTW the hole for the through 
> bolt on most of the punches is as large or larger than the bulkhead 
> connectors for N or UHF.  (Same size IIRC)
> 
> 73
> 
> Roger (K8RI)
> >  
> >
> > Greenlee doesn't make a double-D that is small enough and I'm having
> > difficulty finding the right size anywhere.  
> >
> >  
> >
> > This must exist somewhere.  Anyone know where to find one?
> >
> >  
> >
> > FYI - if you don't know what I'm talking about, then Google "double-d
> > punch".  You will find many out there, most notably Greenlee.  But I haven't
> > found any that have the right dimensions for a standard N-connector. 
> >
> >  
> >
> > Regards,
> >
> > Michael  /  N6MEF
> >
> >  
> >
> >  
> >
> >  
> >
> > _______________________________________________
> >
> >
> >
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
> >
> >   
> 
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk

_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>