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From: Snag <Snag_one@msn.com>
Newsgroups: rec.crafts.metalworking
Subject: Re: adjustable square for SHS / box sections
Date: Sat, 8 Feb 2025 06:56:36 -0600
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On 2/8/2025 12:06 AM, Richard Smith wrote:
> Hi all
> 
> Working with
> Rectangular Hollow Sections
> Square Hollow Sections
> box sections
> ...
> 
> The rounded corners make using an adjustable square / sliding square
> problematic.
> 
> Given number of machine parts I have to make quite accurately based on
> SHS's, thinking of a tool specially optimised for marking distances
> from the surfaces.
> ie. whatever presents as "top", slide along marking down the "sides".
> Typically the middle of the "sides".
> 
> Accuracy - well using a chalk / soapstone is plenty good enough.
> Have to bring magnetic-base drill to the job most of the time, and
> with using a shell-cutter / trepanning cutter with a central "pin" to
> locate on the centre-pop - accuracy there is less than chalking gives.
> So - would hold thing in place and chalk-mark.
> 
> I could trim offcuts of angle-iron to make single-dimension tools -
> eg. marks 25mm from "top" surface.
> Advantage with this or "settable" tool is spin around 180deg and mark
> the other "side" and the two heights/levels should match-up.
> 
> Hope described this well enough.
> 
> Best wishes
> 

   I've seen combination squares with a wide flange on the head that 
will do what you want . Here's a link to one on Amazon , kinda pricey 
but you might be able to find one cheaper .

https://primeweld.com/products/lagesse-products-lasquare-12-combination-square-stainless-steel-blade-aluminum-square-head
-- 
Snag
We live in a time where intelligent people
are being silenced so that
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