technical talk..........

[Italy]

technical talk,
that maybe someone already knows.
I discovered a few months ago,
cutting 2/3 cm 20x120 planks.
the first photo, shows 2 pieces just cut,
the second photo is the next day,
shows a piece cut the day before,
all curved. the day before was perfect.
At first I had not made a case, I thought my freecut
he had failed the cut.
but I think cutting the tile, tension
you download and this happens, or the other way around.
I'm not a technician ....
I also wanted to say,
that not all cuts make this curvature.
if the planke is produced by a 60x120 format,
therefore three cuts of 20cm,
Curvature occurs only on the outer edges
because there is no tension in the inner edges.
since they have already been cut by a 60x120 tile.
do you understand what I wrote?

 

[Italy]

 

[Andy Allen]

Your wasted as a tiler mate....
Should of been an architect..

 

[Perry]

Thats intresting Antonio.

 

[Time's Ran Out]

Your wasted as a tiler mate....
Should of been an architect..

Or an engineer!
You should have fixed them immeadiately after cutting and the adhesive with pegs would have kept them straight.

 

[Italy]

Your wasted as a tiler mate....
Should of been an architect..

mine, only arms removed from agriculture...

 

[Italy]

I just wish that some members, enlighten me.
I'm curious to know more

 

[Qwerty]

You may find that a similar cut from the middle of the tile may not warp so much or at all. I think it may have something to do with the firing process and density of the material at the edges?

 

[Italy]

You may find that a similar cut from the middle of the tile may not warp so much or at all. I think it may have something to do with the firing process and density of the material at the edges?

yes, only with small strips. big cuts does not do it

 

[Qwerty]

Could it be to do with the sand content (ratio of sand:clay)? More sand=more warping

 

[Flintstone]

Whatever process they do to finish the edge of the tile, may add tension and with it being such a thin cut, that tension is pulling it to bend

 

[Time's Ran Out]

It’s only a subtle way of Antonio showing how good he is at long thin cuts.

 

[Flintstone]

The

 

[Italy]

puff, I smoke coming out from the brain ;(
something I discovered,
the tension in the porcelain,
it is formed during the cooling of the tile,
when it comes out of the ovens. (cooling too fast).
this does not happen in thin porcelain.
because the cooling is done more slowly.

this should be the reason,
but at the first opportunity, I addressed the problem
with a smarter person than me. haha

 

[Perry]

Anyway no tiler should have cuts that small Antonio.

 

[One Day]

It is caused by temperature differences in cooling.
Best way to illustrate it, samurai swords are curved but the curve is made by painting one side of the steel with clay. Then the steel is heated. It's still straight at this stage. But when the hot steel is immersed in water, the different rate of cooling creates the gentle curve.
So it's down to lazy production really.
Not all porcelain does it, but when it does, it's a pain.
I imagine it matters very little to the factory, but it matters to us!

Incidentally, there's no sand used in porcelain whoever said that?!

 

[GAZ5518]

Good cut Antonio.. You must have used a "Rubi"..!!!
.... Lol
Here we go.....

 

[Qwerty]

Incidentally, there's no sand used in porcelain whoever said that?!

I said that. I have always been told by tile manufacturers that sand mixed with feldspar is used in the manufacturing process of porcelain. I visited the Yorkshire Tile Company years ago and they told me exactly that, and their website still states it....

It's also widely advertised by multinational porcelain manufacturers as in this YouTube video by Everstone (1min 20secs in)....

 

[One Day]

thanks. I learn every day