New Granite Square

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Pete Deal

Titanium

Joined

Apr 10, 2007

Location

Morgantown, WV

• Mar 19, 2018

• #1

I just replaced the Y axis slides on my cnc mill and wanted a precise square to check the square of the axis. I wound up buying a 6x10 chicom square, which seems pretty good really. Then I found a 18x12x3 Mojave Granite square on ebay for $175 but pickup only. Just for the heck of it I asked the guy if he would ship and he said he would. Shipping only $65. Anyway, I couldn't resist! Seemed like a great deal. Came today and condition seems perfect. Accuracy is supposed to be .0001" in 12"

 

M

Mark Rand

Diamond

Joined

Jul 9, 2007

Location

UK Rugby Warwickshire

• Mar 20, 2018

• #2

You suck!

 

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Tyrone Shoelaces

Diamond

Joined

Apr 19, 2006

Location

Manchester, England

• Mar 20, 2018

• #3

That's a very nice square.

Regards Tyrone.

 

triumph406

Diamond

Joined

Sep 14, 2008

Location

ca

• Mar 20, 2018

• #4

How does the chicom square compare to the Mojave square?

 

P

Pete Deal

Titanium

Joined

Apr 10, 2007

Location

Morgantown, WV

• Mar 20, 2018

• #5

I don't know yet but will check them. I went a little overboard in the square department in the last few weeks and also bought a nice polish cylinder square on ebay. I am new to all this but when I put the cylinder square up to the chicom square i see no light at all top to bottom. I will indicate between the two granite squares and see how they compare- that should do it right?

 

triumph406

Diamond

Joined

Sep 14, 2008

Location

ca

• Mar 20, 2018

• #6

Pete Deal said:

I will indicate between the two granite squares and see how they compare- that should do it right?

Click to expand...

I would think so.

 

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Tyrone Shoelaces

Diamond

Joined

Apr 19, 2006

Location

Manchester, England

• Mar 20, 2018

• #7

Another way is to stick several strips of cigarette paper to your granite square with a little saliva. Butt the squares up and see if you can pull out the papers.

Regards Tyrone.

 

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John Garner

Titanium

Joined

Sep 1, 2004

Location

south SF Bay area, California

• Mar 20, 2018

• #8

Speaking of paper feelers, I've finally found some that I REALLY like. White "pastry tissues" (aka "doughnut tissues") that my wife's favorite bakery uses to keep sales-clerk fingers off of the goodies when bagging them. They're translucent white, a skosh over 0.001 inch thick, very uniform and strong, and impregnated with a "dry wax" that makes them ever-so-slightly slick, not sticky.

 

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Pete Deal

Titanium

Joined

Apr 10, 2007

Location

Morgantown, WV

• Mar 24, 2018

• #9

I finally got to check my chicom square (6x10) against my Mojave Granite 12x18 square. First I came up with the stupid idea of standing both of them on the surface plate face to face about 3" apart and setup an .0001" indicator on a base and slid it along the 12x18 square and probed the chicom square. This did not work so well. Then I figured the way to do this was to lay the big square down, then lay the small square on top of it. I slid the small square around until I had the two short bases parallel as determined again by sliding an indicator base along the large square base while probing the small square base. Then once those were parallel I did the same on the long edges. Seems like the chicom squares agree within .0001. Pretty stinking good for my use.

 

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ripperj

Stainless

Joined

Dec 8, 2015

• Mar 25, 2018

• #10

Are you able to post the source of the square?, or pm me if it’s from Big green
Thanks Keith


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Pete Deal

Titanium

Joined

Apr 10, 2007

Location

Morgantown, WV

• Mar 25, 2018

• #11

Ebay- vendor was qualitymachinery. I think the shars one is the same though.

 

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ripperj

Stainless

Joined

Dec 8, 2015

• Mar 25, 2018

• #12

Thanks, I’ll check it out


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