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Posted: Wed May 06, 2020 7:08 pm
by RichardH
I have a petrol hand held saw, but would prefer to hire a mechanical pressure cutter. These are OK with concrete block paving, but I haven't laid these 'cobbles' before; Link https://www.rock-unique.com/natural....es.html
They are basalt precision cut and tumbled 50 x 100 x 80 - 180 mm
I have a number of curves on the job so anticipating cuts as these are supplied as a random size/qty crate.
Anyone used/cut these?
Posted: Thu May 07, 2020 10:12 am
by Tony McC
I keep telling Chris at RU that they are Setts, not cobbles, but he sticks with the name bacuse that's how the ignoramuses of Kent refer to them.
https://www.pavingexpert.com/cobble01#definitions
I worked with thos ebasalt setts when RU first started bringing them in to Britain 15 years or more ago. They can be cut with a hand-held saw, using a stone-cutting blade, but best results will come from a bench saw fitted with a water-cooled stone-cutting blade.
When you refer to a "mechanical pressure cutter" do you mean a splitter/guillotine?
https://www.pavingexpert.com/cutting#block-and-slab-splitters
....these will work with the basalt setts, but that stone is pretty tough, so you would needs a splitter with a decent extension lever or, better still, one featuring a hydraulic jack (as shown on the page mentioned above) to generate sufficient pressure to split the stone.
And it will need to have truly keen blades - dull blades will severely hinder accurate cutting.
Posted: Thu May 07, 2020 10:25 am
by RichardH
Tony, thanks for this. Great job of work this website and forum.
Hiring is not straight forward atm around here - will see if I can test the splitter (that is what I mean't) on one before hiring