Making granite parallels and squares - is any granite sufficient?

[jccaclimber]

A tile saw with sufficient blade diameter isn't as efficient compared to band saw, but unless intentional (thickness unknown) the water jet kerf will require a lot of unproductive dressing to square up.
That said, if I was bandsawing, the "back side" surfaces would be inclined; clearly indicating those actually square and parallel.

While it’s better than my hand work on a diamond blade bandsaw, the large flat faces on the Norton stones I’ve used are not square enough to safely clamp or stack. Most seems to be a bit convex, but that’s not a rule and my sample size is small. For those I’ve been using the combination stones so between the color pattern and surface roughness differences it’s clear which sides are cut.

 

[Toolmaker51]

While it’s better than my hand work on a diamond blade bandsaw, the large flat faces on the Norton stones I’ve used are not square enough to safely clamp or stack. Most seems to be a bit convex, but that’s not a rule and my sample size is small. For those I’ve been using the combination stones so between the color pattern and surface roughness differences it’s clear which sides are cut.

A successful bandsaw deserves a saw fence, with compensation to adjust squareness parallel to blade.
Just cruised these 3 pages for updates on granite furniture, ie squares and parallels. There are a lot of surplus surface plates cheap enough that labor will still be less than buying the items commercially.
One technique hasn't been mentioned attaining true flats; THREE PLATE Method as used by Joseph Whitworth (1830's). He attained flatness in millionths without and before common instruments capable measuring single tenths of a thousandth.
There'd be no Industrial Revolution without it; note how little time elapsed after solving flat reference surfaces. Naturally, combining both led to interchangeability.

 

[jccaclimber]

In this case the bandsaw is a Gryphon Aquasaw. I could probably put a fence on it, but its primary use is not precision cutting. The blade is also deliberately thin to facilitate cutting curves.
It's possible someone makes a larger cross section blade, but given how fast it is to grind off a bit of kerf from the waterjet I'm not sure it's worth the effort. I could see a tile saw being useful if I wanted to do a bunch of these.

 

[IceCzar]

I've cut a lot of stone most of it hard sandstone (near granite hard in some cases depending on where : Blue Mountain / Blue Top (85-90% quartz) https://www.colorado.edu/fm/sites/d...rontrangesandstonequarries-databybilldeno.pdf

and I've built from scratch or refurbished\altered multiple saws of damn near every configuration imaginable. (A whole limestone cutting factory in Kansas with one bridge saw from scratch @ 3ft diameter blade)

Granite is a bitch.
the larger your blade diameter the more deflection you'll get and the larger the kerf. the harder the stone the more important the proper metal matrix to expose diamond becomes.

Personally if I was looking at this I'd go diamond wire\rope

The mechanics of sawing granite with diamond wire - The International Journal of Advanced Manufacturing Technology

Today, wire sawing of natural stone is undergoing widespread commercialization. In addition to rock extraction and processing with single wires, composed of a multitude of diamond-impregnated beads mounted onto a steel rope, this technology is increasingly used for slabbing of granite blocks on...

link.springer.com

squaring up with a diamond cup wheel(s) on a bridge(s) then finer abrasives and lapping.

 

[TGTool]

Very interesting. I've driven the Boulder through Lyons road quite a few times and wondered at the stone sources. I had no idea there were that many quarries in the area.

 

[IceCzar]

since the 1880's but not all the formations are the same process, you'd be cutting a fountain or dakota formation sandstone when suddenly a lyons formation blue top would eat your blade :p

that was compressed sand dunes (most of the rest was eroded granites)
and its blue top because its the hardest stone at the top of the mountain most resistant to erosion. It can be almost purple red

Garden of the Gods in Colorado Springs is Lyons Formation, the Flatirons in Boulder Fountain Formation
all of them are to be found and quarried in Lyons

Loukonen Bros. run a diamond wire, from a fabrication point of view it would be a whole lot easier than a big bidge saw
(you can see both here)

Domestic Built Quality For Over 25 Years.

Diamond wire saws for granite, marble, sandstone and limestone cutting.

www.sawingsystems.com

 

[IceCzar]

you also might find this of interest

Marble Colorado

westernmininghistory.com

Marble Colorado Photo Gallery

westernmininghistory.com

Yule Marble being world famous (Lincoln Memorial, Tomb of the Unknown Soldier ect)
back in the day before industrial diamond cutting they simply ran sand slurry as the abrasive with the saws