Machine marks on limestone

[k13wjd]

Anyone had issues with this before ??? Circular raised mark on the face of the limestone, 4or 5 inches in dia, with 5 smaller circles with it....

Photo to follow. 50 odd flags, 10 marked with the same "scar"

[k13wjd]

1 blade scar. what confuses me is : If a flag is buffed after the face is cut to size, then this scar would be a indentation, NOT a raised portion ?

Anyone care to enlighten me?

[haggistini]

That is a natural bulge (like a knot in wood) in limestone I have come across many times

[k13wjd]

i'll need to get a better photo.

(im not saying your wrong, im just not not convinced)

its a perfect circle, with 5 perfect circles within it. there are exactly the same marks on more than 6 of my flags, so i presumed it wasn't a natural occurance. to make it less natural, all the affected flags are the same size in a random pack

[lutonlagerlout]

k13wjd is it 6 sided sawn?
if not the gloves are off mate
any natural material can have all sorts of humps bumps and marks
if you want perfection then probably use 6 sided sawn or pre cast slabs
cheers LLL

[Pablo]

If the flag surface is undressed and has just been split and the edges trimmed then it' something that has naturally occured and your paving is just a cross section of it from when they moved through the block. Tell everyone it's a dinosaur footprint.

[k13wjd]

no, they are riven black limestone, edges are hand cut, faces are machined by the looks of it, most are very flat, only 1 of the big 900x600 has a big fall in it, like 10mm over the 600 wide ( in the centre). That one will get changed i'd think.

I'll aim to get a better photograph.

[k13wjd]

i'll double check that theory, by looking to see if the marks are all aligned the same on each flag. If they were cut from a block, i'd think they would fairly similar.

T rex i tell you.

[London Stone Paving]

no, they are riven black limestone, edges are hand cut, faces are machined by the looks of it

How can it be riven with a machined face?

That stone is not machine cut. When you machine saw black limestone the surface goes like glass, nobody does it. Its a naturally split product. The mark you refer to is a natural feature of the stone.

Dont want to appear rude but there is no theory to double check, you can study the mark all day and it will still be a natural mark

[Dave_L]

Yep it's definitely a dino-print. The kids will love it. :p

[k13wjd]

thanks for the input guys - i understand now. the supplier had a look, and was quite happy to swap the ones i wasn't happy with. still left with some nice imprints which i've grown to love.

the ones they gave me have some lovely peices of fools gold in them - they'll look awesome.