On Sat, 22 Oct 2011 16:14:12 -0400, Tuuk wrote:

Hi
I have a sauna with electric heater 7000watts. Nice area on top to put
some rocks and I see others have suggested lava rocks. What if I put
granite or limestone? That is what I have there now, they haven't
cracked or exploded after spraying water on them. They look nice, some
red, some different colors. Is there any harm in using granite or
limestone apposed to using lava rocks? I am sure they were all the same
a few million years ago,,, any reasons why I shouldn't use the granite
or limestone rocks? Radiation? Emmisions of sometype? inevidable that
they will explode? nuclear meltdown of some kind? I figure the
temperature is around 200 or 300 degs.

Any thoughts please and thanks?

Hot rocks will crack when you pour water on them. That's why you need
igneous stuff like lava (at Barbecues Galore). Get a squirtgun.

On 24.10.2011 17:34, dave wrote:
On Sat, 22 Oct 2011 16:14:12 -0400, Tuuk wrote:

Hi
I have a sauna with electric heater 7000watts. Nice area on top to put
some rocks and I see others have suggested lava rocks. What if I put
granite or limestone? That is what I have there now, they haven't
cracked or exploded after spraying water on them. They look nice, some
red, some different colors. Is there any harm in using granite or
limestone apposed to using lava rocks? I am sure they were all the same
a few million years ago,,, any reasons why I shouldn't use the granite
or limestone rocks? Radiation? Emmisions of sometype? inevidable that
they will explode? nuclear meltdown of some kind? I figure the
temperature is around 200 or 300 degs.

Any thoughts please and thanks?

Hot rocks will crack when you pour water on them. That's why you need
igneous stuff like lava (at Barbecues Galore). Get a squirtgun.

Well, some sauna specialists prefer non-porous rocks to others, I am not
sure if the translation "soapstone" is known or correct, but it's dense,
not porous as limestone and has good thermal storing property.
Granite probably don't break easily as it's hard and solid, but
thermal storing properties are not the best.
The one popular stone used is the olivine, there could be several
variants of it.
Don't know the availability of "soapstone" in your area or the price of
it in your quantities but it could be one choice to try, at least on top
layer of stove.

br KB

I have a sauna with electric heater 7000watts. Nice area on top to put some
rocks and I see others have suggested lava rocks. What if I put granite or
limestone? That is what I have there now, they haven't cracked or exploded
after spraying water on them. They look nice, some red, some different
colors. Is there any harm in using granite or limestone apposed to using
lava rocks? I am sure they were all the same a few million years ago,,, any
reasons why I shouldn't use the granite or limestone rocks? Radiation?
Emmisions of sometype? inevidable that they will explode?

Not inevitable, but entirely possible, and with potentially bad
consequences (e.g. "flying hot rock fragment puts out somebody's eye").

Granite *may* be safe enough, as it's a metamorphic rock which has
been heated to high temperatures at least twice in its lifetime.
Depends on whether that particular granite has cracks in it (some
does), how much moisture or water it has been exposed to, etc.

I would avoid limestone, as this is a sedementary rock which is
deposited from water and has quite a bit of water bound up in its
structure.

It's really a question of "How lucky do you feel?"

--
Dave Platt AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

On 10/24/2011 12:17 PM, Dave Platt wrote:
I have a sauna with electric heater 7000watts. Nice area on top to put some
rocks and I see others have suggested lava rocks. What if I put granite or
limestone? That is what I have there now, they haven't cracked or exploded
after spraying water on them. They look nice, some red, some different
colors. Is there any harm in using granite or limestone apposed to using
lava rocks? I am sure they were all the same a few million years ago,,, any
reasons why I shouldn't use the granite or limestone rocks? Radiation?
Emmisions of sometype? inevidable that they will explode?

Not inevitable, but entirely possible, and with potentially bad
consequences (e.g. "flying hot rock fragment puts out somebody's eye").

Granite *may* be safe enough, as it's a metamorphic rock which has
been heated to high temperatures at least twice in its lifetime.
Depends on whether that particular granite has cracks in it (some
does), how much moisture or water it has been exposed to, etc.


granite is igneous. gneiss is metamorphic from granite.

The hazard is, as you point out, voids full of water that superheat, and
then flash to steam. Sort of like the spalling from lightning current
flowing through corroded bolts in concrete.

So it depends more on the structure of the rock than precisely whether
it's igneous, sedimentary, or metamorphic.



I would avoid limestone, as this is a sedementary rock which is
deposited from water and has quite a bit of water bound up in its
structure.

It's really a question of "How lucky do you feel?"

On Mon, 24 Oct 2011 18:52:11 -0700, D. Stussy wrote:

"Audio1" wrote in message
...
On 10/22/2011 5:43 PM, Tuuk wrote:
Ok, Ok,, I will go

Wow, not a very friendly group.

Yes, there are many legends in their own minds on this group.

What intrigues me is why, when a post is considered 'off topic,' even
labeled 'Off Topic...' the reader doesn't just move on to the next post
but has to respond with some nasty, snarky, demeaning bull****. I guess
some people are just wired so they have to feel superior even though
their behavior causes them to appear insecure and incompetent.

...Because this is Usenet and trolls deserve to be chastized. The rra
groups are especially good at such a function.

If the poster knows it's off topic and not of interest to the group, he
should be posting elsewhere.

I am always honored when someone values my opinion.

Thanks all, great tips.

Still trying to figure out somethings on this sauna, it is one of those home
made from scratch things.

I appreciate all advice. Excellent group, lots of knowledge here, I have
benefitted from your advice in the past,,, and I will in the future.

Thanks again and 73s

Best regards






" Tuuk" wrote in message
...
No problem gents,,

I did look into the geology groups and none were active, active on my news
server. And I have learned a lot from this group, lots of knowledge within
this group, I have made all my antennas. I completely made my sauna, right
from scratch. I was simply curious about the rocks, if there were any
theories as to their selection or why some were selected over others. I
supposed it is a matter of preferrence. Did you know that rocks age
several thousand years each time you heat and cool them? In accourdance
with errosion? And I also learned a lesson in feng shui as these rocks
cause a situation better than viagra, as when my asian gf came into the
sauna with me there last night, well, lets just say we learned a few
things there. None of the rocks exploded, I intentionally coolded a couple
of them instantly in a bucket of ice water then back on the stove then
cooled and nothing cracked or exploded like I read somewhere. Some of them
were turning colors but I might attest that to the fluid replenishments,
But still a bit curious why some sauna places scream about lava rocks, and
forbid granite rocks, while others sell granite rocks. I suppose about 4
million years ago they could have been the same. So any geological advice
from anyone in the know is awsome. 73s





"tom" wrote in message
. net...
Sorry some of our group were abrupt with you. That was rude.

On the other hand, you do understand that this is an ANTENNA discussion
group, correct?

When you ask about things that are absolutely not on the menu don't
expect nice answers unless you ask very nicely and don't have an
attitude.

tom
K0TAR

On 10/22/2011 4:43 PM, Tuuk wrote:
Ok, Ok,, I will go

Wow, not a very friendly group.

But I did manage to learn a lot about the rocks this evening, I got a
lot of opinions from googling, mostly of dealers with their opinion.
Some had bags of granite rocks for 80 dollars, plus shipping, plus
taxes.

Very interesting comments,,

I have had two or three visits to the sauna with high heat and nothing
exploding yet or breaking down of rocks yet.

Thanks for all the great comments. Have great day and 73s





"Jim Lux" wrote in message
...
On 10/24/2011 12:17 PM, Dave Platt wrote:
I have a sauna with electric heater 7000watts. Nice area on top to put
some
rocks and I see others have suggested lava rocks. What if I put granite
or
limestone? That is what I have there now, they haven't cracked or
exploded
after spraying water on them. They look nice, some red, some different
colors. Is there any harm in using granite or limestone apposed to using
lava rocks? I am sure they were all the same a few million years ago,,,
any
reasons why I shouldn't use the granite or limestone rocks? Radiation?
Emmisions of sometype? inevidable that they will explode?

Not inevitable, but entirely possible, and with potentially bad
consequences (e.g. "flying hot rock fragment puts out somebody's eye").

Granite *may* be safe enough, as it's a metamorphic rock which has
been heated to high temperatures at least twice in its lifetime.
Depends on whether that particular granite has cracks in it (some
does), how much moisture or water it has been exposed to, etc.


granite is igneous. gneiss is metamorphic from granite.

The hazard is, as you point out, voids full of water that superheat, and
then flash to steam. Sort of like the spalling from lightning current
flowing through corroded bolts in concrete.

So it depends more on the structure of the rock than precisely whether
it's igneous, sedimentary, or metamorphic.



I would avoid limestone, as this is a sedementary rock which is
deposited from water and has quite a bit of water bound up in its
structure.

It's really a question of "How lucky do you feel?"

No That is wrong Dave

Dave, I have learned not to accept anything you post. I think you are just
trying to make fun.

You couldn't be further from the facts on this. And dangerous for you to
even comment.

Your comments from now on will be taken with a grain of salt.

You have been proven wrong too many times.

But you are funny, I will give you that, you are humorous.





"dave" wrote in message
...
On Sat, 22 Oct 2011 16:14:12 -0400, Tuuk wrote:

Hi
I have a sauna with electric heater 7000watts. Nice area on top to put
some rocks and I see others have suggested lava rocks. What if I put
granite or limestone? That is what I have there now, they haven't
cracked or exploded after spraying water on them. They look nice, some
red, some different colors. Is there any harm in using granite or
limestone apposed to using lava rocks? I am sure they were all the same
a few million years ago,,, any reasons why I shouldn't use the granite
or limestone rocks? Radiation? Emmisions of sometype? inevidable that
they will explode? nuclear meltdown of some kind? I figure the
temperature is around 200 or 300 degs.

Any thoughts please and thanks?

Hot rocks will crack when you pour water on them. That's why you need
igneous stuff like lava (at Barbecues Galore). Get a squirtgun.

On Sun, 23 Oct 2011 08:52:16 -0400, Tuuk rearranged some electrons to
say:

as when my asian gf came into the sauna with me there last night, well,
lets just say we learned a few things there.

I assume she learned what an idiot you are.