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Thread: Black Engineers Square
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20th February 2014, 12:54 AM #1GOLD MEMBER
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Black Engineers Square
I've just purchased a Moore & Wright engineers square that is painted* mate black. Someone has ground some lettering in the side and the black is over that so I assume it didn't leave the M&W factory black. Can anyone come up with a reason why you'd want a black square? or do I assume its to hide rust stains(and the shocking letter grinding job)
Stuart
*I'm not so sure its paint, maybe its black oxide?
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20th February 2014, 06:36 AM #2Philomath in training
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non-reflective?
Michael
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20th February 2014, 02:13 PM #3
Stu,
I am pretty sure its Phoshate, some will turn out a black colur.
Some old M &W squares were done with a phosphate finish similar to the receivers on 303 rifles. Mine certainly was not rust proof but served to lengthen the intervals at which oil should be applied. I did a set at school with phosphate and they lasted about a year with kids handling them on a regular basis . I have lanolin grease which I use after the phos treatment.It has not been a year for the gear i did at home, but seems to be better than other carp I have tried.
I did a explanation a few years back on how to do it, in this forum.
Grahame
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20th February 2014, 06:28 PM #4SENIOR MEMBER
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20th February 2014, 06:35 PM #5
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20th February 2014, 07:29 PM #6GOLD MEMBER
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Hi Guys,
Well I decoded the grinding......I assume the the n is an m(shows up surprisingly well in the picture)
Assuming it's Phoshate, will evapo-rust(or something along those lines) effect it? It's a little rough around the edges, seems a shame to make it all shiny again but there may not be any other way.
Thank you
Stuart
p.s. lol Ray, felt a little like I needed some stealth to make my getaway, given what I paid for it.Last edited by Stustoys; 20th February 2014 at 07:32 PM. Reason: p.s.
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20th February 2014, 09:06 PM #7Member
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Stuart
If it was sourced from Australia, a Google search shows it could be from "Melbourne and Metropolitan Board of Works".
JohnQ
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20th February 2014, 09:42 PM #8SENIOR MEMBER
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20th February 2014, 11:15 PM #9GOLD MEMBER
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Sounds like a plan Phil (just have to check I'm not playing chauffeur,,,,, but I think thats Sunday)
Thank you Ray.
Stuart
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21st February 2014, 12:16 AM #10
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21st February 2014, 12:50 AM #11GOLD MEMBER
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Hi Grahame,
Thank you. Based on your PM, I think I'll give it a "working clothes"* clean and see if black is any use... then make up my mind to either make it shiny or make it shiny and re phosphate it.
I havent even measured it up yet..... maybe it needs far more work than I'm thinking.
Stuart
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22nd February 2014, 09:48 PM #12GOLD MEMBER
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Well I gave Phil a look at the square today. He pointed out a few signs that show its been used on a welding bench. Now while it would make a nice welding square, I already have a one and I dont think I could bring myself to use it as such. So I might put it away for a rainy day then have a go at cleaning it up a little and see what I end up with.
Stuart