[NSRCA-discussion] Cutting through side of metal carrying case?

[Dave Harmon]

I found that using an IOTA 55A supply in the case that a sidewall mounted
fan was not needed if the chargers cooling fins and fans were open to the
air.

My box is the typical Harbor Freight type with 2 opposed opening lids and
the chargers are mounted on a top plate with a couple of 1 ½” holes for psu
exhaust. Of course the psu fan is open to the air as well. The psu fan
almost never runs at top speed even when loaded to 53A.

 

Dave Harmon

NSRCA 586

K6XYZ[at]sbcglobal[dot]net

Sperry, Ok.

 

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Robert
Campbell
Sent: Thursday, July 05, 2012 9:39 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Cutting through side of metal carrying case?

 

Tim,

 

I've built several boxes for myself and friends and learned quite a bit in
the process.  It really depends on the size of hole you are planning to
make.  My boxes have 3 inch holes for cooling air.  Each has an 80mm cooling
fan, screen and grill.  Fans are aligned for flow-through cooling.  I use a
hole saw and built a jig to securely hold the box while drilling/cutting.

 

The biggest surprise with most "aluminum" cases is they are really heavy
cardboard cases with heavy aluminum foil cutting.  When I first tried a hole
safe, it grabbed and almost destroyed the case!  

 

 

Rob

----- Original Message ----- 

From: Pascoe,Tim [Burlington] <mailto:Tim.Pascoe at ec.gc.ca>  

To: General pattern discussion <mailto:nsrca-discussion at lists.nsrca.org>  

Sent: Thursday, July 05, 2012 7:55 AM

Subject: [NSRCA-discussion] Cutting through side of metal carrying case?

 

I’m in the process of putting together a field charging case, and want
suggestions on the best way to accurately cut holes in the sides of an
aluminum carrying case. Since I’m sure others have gone before me, I’d
rather not do it the hard way the first time J

 

Thanks,

 

Tim Pascoe 

 


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