Hi Gary,

Very good on the rods!   Your Centennial Carbide source will likely long
outlast the surplus outlet supply route.

In many ways....this "surface" aspect is hard to define to where its
equitable scale is communicated across the broad
spectrum....via some sort of everyday items that most people have; which
they can use for comparison.  Regardless; the
smoother the rolling rods/ball pivot surfaces; the better the overall
seismometer mass enertia results.

Real bad intrigued curiosity = $1  = 15 ball surplus "lottery" = gamble.

Take care,  Meredith

On Mon, Jun 16, 2008 at 3:44 PM, Gary Lindgren 
wrote:

>  Hi Merdith,
>
> I just received my Tungsten Carbide 1/8" rods from Centennial Carbide. The
> surface finish is excellent and needs no further polishing. Not quite a
> mirror finish but very close. I got 10 rods and total cost was $17.30
> including shipping. I would stay away from materials with 'unknown'
>  description. How do you repeat a result. There plenty of sources at good
> prices  for both rods and balls.
>
> Gary
>
>
>
>
>
>
>
>
>
>
>
>
>
Hi Gary,

Very good on the rods!   Your Centennial Carbide source will likely long outlast the surplus outlet supply route.

In many ways....this "surface" aspect is hard to define to where its equitable scale is communicated across the broad

spectrum....via some sort of everyday items that most people have; which they can use for comparison.  Regardless; the
smoother the rolling rods/ball pivot surfaces; the better the overall seismometer mass enertia results.   


Real bad intrigued curiosity = $1  = 15 ball surplus "lottery" = gamble.

Take care,  Meredith   

On Mon, Jun 16, 2008 at 3:44 PM, Gary Lindgren <gel@.................> wrote:














Hi Merdith,

I just received my Tungsten Carbide 1/8" rods from
Centennial Carbide. The surface finish is excellent and needs no further
polishing. Not quite a mirror finish but very close. I got 10 rods and total cost
was $17.30 including shipping. I would stay away from materials with 'unknown'
 description. How do you repeat a result. There plenty of sources at good
prices  for both rods and balls.

Gary