[USMA:35435] Re: sheet metal

[Pat Naughtin]

Title: Re: [USMA:35434] Re: sheet metal

Dear John,

When I was in Salt lake City earlier this year, I visited a sheet metal factory with Jim Elwell. One of the machinists was using inches, and fractions of inches, to punch, drill, and fold a sheet that was labelled 19.7 inches.

It only took a moment to realise that the sheet metal manufacturer was making the sheets 500 millimetres wide and then 'dumbing them down' to 19.7 inches for the next person in the processing chain.

Cheers,

Pat Naughtin ASM (NSAA), LCAMS (USMA)*
PO Box 305, Belmont, Geelong, Australia
Phone 61 3 5241 2008

Pat Naughtin is the editor of the free online monthly newsletter, 'Metrication matters'.
You can subscribe by going to http://www.metricationmatters.com/newsletter

 * Pat is the editor of the 'Numbers and measurement' chapter of the Australian Government Publishing Service 'Style manual – for writers, editors and printers', he is an Accredited Speaking Member (ASM) with the National Speakers Association of Australia, and a Lifetime Certified Advanced Metrication Specialist (LCAMS) with the United States Metric Association. For more information go to: http://metricationmatters.com

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On 21/12/05 4:25 AM, "J. Ward" <[EMAIL PROTECTED]> wrote:

> I would love to know if there is a local supplier of metric sized sheet
> and bar stock in Los Angeles.  Our shops at the Jet Propulsion
> Laboratory only stock hard-inch sizes, so in my designs I'll often have
> a few soft conversions like 6.35 mm to use "standard" sheet metal
> sizes.  McMaster Carr sells a few metric sizes of stock metals, but they
> don't follow the preferred number series, and they aren't really a stock
> metal supplier.
>
> I will point out that JPL does stock a wide array of metric fasteners,
> and I think that the majority of drawings being machined are
> hard-metric, usually with metric-only dimensions rather than dimensioned
> in dual units.
>
> J.
>
> Pierre Abbat wrote:
>
>> Is anyone in the USA making sheet metal in Renard numbers of millimeters
>> instead of gauges?
>>
>> phma
>>
>>
>>  
>>
>