[Boatanchors] Chassis Mechanical Question

[Chuck McGregor]

You can get a plumber's reamer that chucks in a carpenter's brace.  That
was what I used for chassis holes for the first 30 years of my radio
hobbies.
73
Chuck K7MCG


On Fri, Feb 14, 2014 at 8:44 AM, Garey Barrell <k4oah at mindspring.com> wrote:

> A plumber's reamer works great for this, even without a drill press.  Can
> even be used by hand.  Looks like a 'T-Handle' reamer, just bigger.  Used
> to ream out the inner edge of pipe that's been sawed.
>
> Built a lot of radios with one of these!!  :-)
>
> 73, Garey - K4OAH
> Glen Allen, VA
>
> Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
> and TR-4/C Service Supplement CDs
> <www.k4oah.com>
>
> whitebear1122 at comcast.net wrote:
>
>>
>>
>> Greetings.  I have a mechanical question.  I am in the process of
>> drilling , milling, and hole  punching several chassis's fo r my HBR-13
>> receiver project.  I have all the holes punched except for three octal
>> socket holes.  I just discovered the octal ceramic sockets require a 1 1/4"
>> hole and my Greenlee punch is 1 1/8".  My question is this:  Can I
>> realistically file 1/16" all the way around with a rat tail type file and
>> have the hole look clean.  I'm worried I'll start filing and it will end up
>> looking like crap or become  goofy shaped.  Is there some sanding barrel
>> shaped attachment for a drill that would open the hole slightly and evenly?
>>
>>
>>
>> I wonder if anyone has a used Greenlee 1 1/4" inch punch for sale.  I've
>> got a nice selection put together so far, including  5/8", 3/4", 7/8", and
>> 1 1/8".  I've never used a punch before this and they have been fabulous!
>>  I did have to learn a lesson though.  I was so darn careful to be precise
>> in my layout drawing, and transferring those hole dimensions to the
>> chassis.  I used the recommended punch screw hole dimensions in the
>> Greenlee instructions and then found out the holes didn't need to be that
>> big, so the punch floated around too much and all the tube socket holes are
>> slightly offset. Darn.   Maybe it'll look better when I take the  masking
>> tape off.   :)
>>
>>
>>
>> Thanks.  73, Sc ott WA9WFA
>>
>>
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>