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how to cut carbide shelves? any suggestions?

updated thu 31 jul 97

 

Peter Willis on sat 21 jun 97

Hi group!
Uhhh, the subject header pretty much explains my delimma. But I will go
into a little detail. I have the opportunity to buy some 23 1/2 inch x
25 inch silicon carbide shelves for $10 each. They are not in the best
condition, but would be good enough for my purposes, except...Except they
are incredibly heavy and large! I was wondering if there might be some
magic potion or magic word that might get them to split on their own.
Doubted it, but I had to try. Anyway, I thought maybe someone else has
had this problem before whom also didn't have access to a diamond blade
saw. Any info would be greatly appreciated.
Thanks for your support,

Trying hard to figure out how to design my Olsen Fastfire without the
right sized shelves,
Becky Lowery
Lexington, KY USA

Fay & Ralph Loewenthal on mon 23 jun 97

Dear Becky, I had the same problem not so long ago. I
have not solved it, but a friend suggested I contact the
local Tombstone merchant. I have not tried that yet, they
should have a diamond say for cutting marble. Hope this
helps Ralph in PE SA

RJMOORE2 on mon 23 jun 97

Hey Becky L.,

If there are any shelves left over that your not going to buy
could you send the contact information to me. I could use some s.c.
shelves at that price..I live in southern IN and Lex. is not that far
away for a deal like that..
thanks,
rjmoore2@iusmail.ius.indiana.edu

_______________________ Reply Separator _______________________

Subject: how to cut carbide shelves? any suggestions?
Author: Ceramic Arts Discussion List at SMTP-Gateway
Date: 6/22/97 6:56 PM

----------------------------Original message----------------------------
Hi group!
Uhhh, the subject header pretty much explains my delimma. But I will go
into a little detail. I have the opportunity to buy some 23 1/2 inch x
25 inch silicon carbide shelves for $10 each. They are not in the best
condition, but would be good enough for my purposes, except...Except they
are incredibly heavy and large! I was wondering if there might be some
magic potion or magic word that might get them to split on their own.
Doubted it, but I had to try. Anyway, I thought maybe someone else has
had this problem before whom also didn't have access to a diamond blade
saw. Any info would be greatly appreciated.
Thanks for your support,

Trying hard to figure out how to design my Olsen Fastfire without the
right sized shelves,
Becky Lowery
Lexington, KY USA

Bob Hanlin on tue 24 jun 97

At 04:54 PM 6/23/97 EDT, you wrote:
>----------------------------Original message----------------------------
>Dear Becky, I had the same problem not so long ago. I
>have not solved it, but a friend suggested I contact the
>local Tombstone merchant. I have not tried that yet, they
>should have a diamond say for cutting marble. Hope this
>helps Ralph in PE SA
>
>I'm gonna jump in here cause I contacted the grave marker people and yes,
they did have a saw with a diamond blade. But...to cut silicon carbide?
We'll they just didn't want to chance that the kiln shelf would damage
their saw. Sooooooooo, they declined.


Bob Hanlin
bhanlin@ionet.net
Oklahoma City, OK

Cindy on wed 25 jun 97

Becky,

Do you know any rockhounds? My grandfather has a diamond blade saw for
cutting agates which would probably work as well for your shelves.
Unfortunately for your shelves, we live in SD. If you're short of
lapidary-loving friends, maybe you could check at your local rock shop. One
of the patrons, or maybe the owner might be willing to take on the job for
you.

Hope this helps,

Cindy

Robert Kittel on thu 26 jun 97

In the commercial side of the granite and marble industries, stone in some
cases is cut with a high pressure water jet. This machine is called a hydro
blade, hydro knife or hydro cutter. The cut is fast and leaves a polished
surface. This type of cutting will fly through some metals as well as stone,
silicon carbide shelves wouldn't be a problem either. I don't know where you
could locate someone with one of these machines, i imagine they are probably
in larger cities. Yes they will take off a finger or hand faster than you
can blink..

BobWicks@aol.com on sat 28 jun 97

Cindy:
Read your post on cutting carbide shelves. I have done this at one time.
This is what I did. I contacted an establishment that cut tomb stones and
they had all of the equipment necessary. The saw is not enough as the blade
needs to have a continous flow of a water coolant and it can not be done too
fast. They used a diamond saw and I found out that they are very expensive.
I know because apparently I didn't use enough water and the blade over
heated and ruined the blade at a cost of $200. I would not recommend that a
rock hound do this as cutting carbide shelves is much bigger a job than
cuting stones.

Good luck.

Bob

Cindy on mon 30 jun 97

Hi, Bob.

Yes, I understand about the drip, drip, dripping. Cutting agate requires a
continuous wetting of the blade and no rock hound would consider using his
expensive equipment without proper lubrication. The main problem, I would
think, would be in fixing the shelf in place. Rocks are held in a special
clamp which keeps them from moving and stressing the blade. Shelves would
require a much different sort of clamp set-up.

Cindy

kinoko@junction.net on wed 2 jul 97

Cindy, We hav rarely had difficulty cutting any shelves by using the
following method: First prepare a good bed of sand about three-inches deep
nd of even particle-size.(no rocks). 2- bed the shelf evenly upon the bed.
(no voids or rocks). 3- With a four-inch masons cutting chisel,gently scribe
a deep line on both sides of the shelf,making a somewhat deeper scribe with
each pass.4- Holding the chisel firmly and evenly against the deepened
line,rap sharply once on each four-inch line as you move the chisel down the
line. One pass on each side of the shelf until the shelf breaks.
Admittedly,this requires practice but it also costs very little and evelopes
a skill useful in cutting any kind of flat brick or shelf. Isao & Don Morrill
>----------------------------Original message----------------------------
>Hi, Bob.
>
>Yes, I understand about the drip, drip, dripping. Cutting agate requires a
>continuous wetting of the blade and no rock hound would consider using his
>expensive equipment without proper lubrication. The main problem, I would
>think, would be in fixing the shelf in place. Rocks are held in a special
>clamp which keeps them from moving and stressing the blade. Shelves would
>require a much different sort of clamp set-up.
>
>Cindy
>
>
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** Don and Isao Morrill **
** Falkland, B.C. **
** kinoko@junction.net **
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