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    

 

 

 

 

 

 

From: psn-l-request@.............. [mailto:psn-l-request@............... On
Behalf Of meredith lamb
Sent: Sunday, June 15, 2008 7:35 PM
To: psn-l@..............
Subject: Re: Tungsten Pins

 

Hi Charles and all,

Electronic Goldmine also has some INTRIGUING "unknown metal" bb's (ball
bearings), of .190 & .250" diameters.  #G15310 .190" diameter, 20 for $1.
#G15311 .250" diameter, 15 for $1.  Their description called them a unknown
metal.  If....their photographs are a accurate and undoctored
representation; at least
too me, they "look" alot like ~ polished carbide; mostly black with the
photo flash small round reflection of light on the centered surface.  I
ordered some of the .250"
variety..we'll find out eventually.  The typical common silver gray chrome
steel (majority) and the stainless steel varieties wouldn't normally look
mostly black in a photo;
but all things are possible.  Anyway...it is better to get both the polished
carbide drill/router shanks and (?) ball bearing at one place alot cheaper.

Take care, Meredith 

On Fri, Jun 13, 2008 at 5:40 PM, Charles Patton 
wrote:

Another place to get carbide rods is:
http://www.goldmine-elec-products.com
They have individual carbide drill and router bits at $0.99 apiece. They
also pretty much always have a grab bag of bits.  I just checked and item
no. G13259 is a bag of 8 or so bits for $2 -- a great deal. I've bought
these over the years from Goldmine to use in my Dremel tool. They're a great
bargain.  When the Dremel HS steel burrs and router are used on steel, they
dull instantly, whereas the carbide bits keep on taking away metal.  They're
the only bits I use.  I tend to break them faster than I wear them out.
With regards to seismo pivots, the shanks are a consistent 1/8" size for
everything and the router bit were mirror polished in the last batch I
bought maybe six months ago  so you might not even have to polish them.  So
far as I can figure they're very good, micro-grain carbide bits that come
out of the circuit board industry.

Anyway, just another thought.
Regards,
Charles Patton

 

 














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    

 

 

 

 

 

 



From:=

psn-l-request@.............. [mailto:psn-l-request@............... On =
Behalf
Of meredith lamb

Sent: Sunday, June 15, 2008 7:35 PM

To: psn-l@..............

Subject: Re: Tungsten Pins



 

Hi Charles and =
all,



Electronic Goldmine also has some INTRIGUING "unknown metal" =
bb's
(ball bearings), of .190 & .250" diameters.  #G15310 =
..190"
diameter, 20 for $1.

#G15311 .250" diameter, 15 for $1.  Their description called =
them a
unknown metal.  If....their photographs are a accurate and =
undoctored
representation; at least

too me, they "look" alot like ~ polished carbide; mostly black =
with
the photo flash small round reflection of light on the centered =
surface. 
I ordered some of the .250"

variety..we'll find out eventually.  The typical common silver gray =
chrome
steel (majority) and the stainless steel varieties wouldn't normally =
look
mostly black in a photo;

but all things are possible.  Anyway...it is better to get both the
polished carbide drill/router shanks and (?) ball bearing at one place =
alot
cheaper.



Take care, Meredith 



On Fri, Jun 13, 2008 at 5:40 PM, Charles Patton =
<charles.r.patton@........>
wrote:

Another place to get carbide rods is:

http://www.goldmine-elec-products.com

They have individual carbide drill and router bits at $0.99 apiece. They =
also
pretty much always have a grab bag of bits.  I just checked and =
item no.
G13259 is a bag of 8 or so bits for $2 -- a great deal. I've bought =
these over
the years from Goldmine to use in my Dremel tool. They're a great =
bargain.
 When the Dremel HS steel burrs and router are used on steel, they =
dull
instantly, whereas the carbide bits keep on taking away metal. =
 They're
the only bits I use.  I tend to break them faster than I wear them =
out.
 With regards to seismo pivots, the shanks are a consistent =
1/8" size
for everything and the router bit were mirror polished in the last batch =
I
bought maybe six months ago  so you might not even have to polish =
them.
 So far as I can figure they're very good, micro-grain carbide bits =
that
come out of the circuit board industry.



Anyway, just another thought.

Regards,

Charles Patton