Hi Chris,

The Ace hardware triangle carbide with the hole would have to be placed on
the end of the boom so
its hole is not centered thereon; but use the ball placement on
a surrounding carbide flat area.

No; I've not checked The Ace Hardware carbide insert/tip surface finish.
But I will be quite curious enough to check eventually.
Its likely available internationally of course under other hardware store
names.

I see what you mean by Sandvic brand tool tips....the british word "tips"
stands for the same carbide insert.
I understand they are quite good.  There is ~ some 7000 + varities of
tips/carbide inserts with alot of brand names, and
probably thousands no longer being made.

Thus far.....I only see one U.S.A., distributor selling stainless steel skin
graft blades...but they sell only by
a box of 10 for $60.00.  Others want to dole out requested quotes...a waste
of time too me.  There is other
international sellers.  One could web find all kinds of stainless steel
scapels cheap however.  I've nothing against the
ss skin graft blade or ss scapel; nor have I seen or tried one as a pivot
surface....maybe someday....which would
be interesting to crudely compare to carbide flats and ruby ball friction
S-G results.  Glad you mentioned their mirror finish, I
didn't know that before.

I've not tried ss balls yet either...another project.

Take care, Meredith



On Sun, Jul 20, 2008 at 1:51 PM,  wrote:

> In a message dated 2008/07/20, paleoartifact@......... writes:
>
> Many thanks for the references.
>
>
>
> Hi Meredith,
>
> Hmmm....the Ace Hardware triangle looks quite cheaply "available" so too
> speak for the U.S.A. participants...great!
> Am not sure it could be useful on Chris's Lehman end of boom placement flat
> surface recommendation, unless its perhaps placement offset to begin
> with thereon?
>
>
>
>        Not sure what you mean?
>
>        Have you checked it's surface finish?
>
>        Check for Sandvik tool tips?
>
>        Let me suggest another source. I am currently using a SS scalpel
> blade, 16 thou thick for the flat plate, glued to the flat turned end of the
> 12mm Al rod arm with Acrylic adhesive. I buy the large 'Skin Graft' blades
> ~$1 each, 50 mm x 15 mm, and cut them into four strips with a carbide disk.
> These are hardened and tempered SS with a mirror finish. Use 3/8" to 1/2" OD
> SS balls. These should easily carry the high contact stress.
>
>        You can also use the 1/4" square tool steel rods for making lathe
> tools.
>
>        Regards,
>
>        Chris Chapman
Hi Chris,
 
The Ace hardware triangle carbide with the hole would have to be placed on the end of the boom so
its hole is not centered thereon; but use the ball placement on a surrounding carbide flat area.  
 
No; I've not checked The Ace Hardware carbide insert/tip surface finish.  But I will be quite curious enough to check eventually.
Its likely available internationally of course under other hardware store names.
 
I see what you mean by Sandvic brand tool tips....the british word "tips" stands for the same carbide insert.
I understand they are quite good.  There is ~ some 7000 + varities of tips/carbide inserts with alot of brand names, and
probably thousands no longer being made.
 
Thus far.....I only see one U.S.A., distributor selling stainless steel skin graft blades...but they sell only by
a box of 10 for $60.00.  Others want to dole out requested quotes...a waste of time too me.  There is other
international sellers.  One could web find all kinds of stainless steel scapels cheap however.  I've nothing against the
ss skin graft blade or ss scapel; nor have I seen or tried one as a pivot surface....maybe someday....which would
be interesting to crudely compare to carbide flats and ruby ball friction S-G results.  Glad you mentioned their mirror finish, I
didn't know that before.  
 
I've not tried ss balls yet either...another project.
 
Take care, Meredith
 

 
On Sun, Jul 20, 2008 at 1:51 PM, <ChrisAtUpw@.......> wrote:

In a message dated 2008/07/20, paleoartifact@......... writes:



Many thanks for the references.  


Hi Meredith,


Hmmm....the Ace Hardware triangle looks quite cheaply "available" so too speak for the U.S.A. participants...great!

Am not sure it could be useful on Chris's Lehman end of boom placement flat surface recommendation, unless its perhaps placement offset to begin
with thereon? 


       Not sure what you mean?


       Have you checked it's surface finish?

       Check for Sandvik tool tips?

       Let me suggest another source. I am currently using a SS scalpel blade, 16 thou thick for the flat plate, glued to the flat turned end of the 12mm Al rod arm with Acrylic adhesive. I buy the large 'Skin Graft' blades ~$1 each, 50 mm x 15 mm, and cut them into four strips with a carbide disk. These are hardened and tempered SS with a mirror finish. Use 3/8" to 1/2" OD SS balls. These should easily carry the high contact stress. 


       You can also use the 1/4" square tool steel rods for making lathe tools.

       Regards,

       Chris Chapman