PSN-L Email List Message
Subject: Re: Carbide machine inserts used for ball surface flats
From: Charles Patton charles.r.patton@........
Date: Sun, 20 Jul 2008 09:01:38 -0700
There used to be replacement inserts for (Sandvik?) import brand paint
scrapers and they were made of uncoated carbide. They were triangles
about 1 to 1 1/4 inches on a side. I bought some for a few dollars at
my local ACE hardware store. Doing a quick Google search found a whole
bunch of similar items at:
The ones similar to what I remember are in the middle of the page listed
as an Allway CB10 for $2.83 each.
Charles R. Patton
meredith lamb wrote:
> Hi all,
> If you're thinking of using machine carbide inserts as a flat surface
> for your ball pivot Lehman or S-G ball horizontal design, its probably
> going to be (so-so) ~difficult to find UNCOATED inserts and; flat
> inserts without the predominate center holes that the majority of shapes
> usually have.
> Almost all newer manufactured inserts have various coatings
> thereon....one is kind of forced to hunt for older "surplus" uncoated
> The prices of new inserts usually is > $10.00 up, each. Older (> 20
> years) uncoated inserts can be ~ > $2-3 or so each.
> Early (~ > 1970's era ) uncoated type carbide inserts aren't listed in
> the newer offerings amongst the current web suppliers it seems. Even
> a old "speculation" insert like on E-Bay can be frought with the problem
> that they don't often say if they are coated with whatever, or, are
> uncoated. Coatings can be a wide variety of material like tin, etc.
> Photographs usually don't give a straight picture of whether they
> are coated or not; a "shiny" reflective insert could still be coated
> with something. If the insert isn't pictured black; its probably
> coated. Most E-Bay
> sellers of course don't know or care. Of course, one could diamond
> grind/lap off the coating.....
> On E-Bay one seller that "often" does list whether they are coated or
> not; and thats "hemlytool". Be aware that "new" can also be
> interpreted as old dated unused (surplus) stock. Often the quanity they
> sell is a turn-off; especially if you only need one or two. hemlytool
> has alot
> of inserts up for auction and afew that are uncoated and without
> centered holes. Most are square but they can be triangular, or diamond
> shaped also.
> The surface of the insert may also need diamond lapping. You may also
> have to use the unmarked side as the marked side could be
> etched or laser or whatever marked; which could interfere with the ball
> The brand name "Valenite" seems to pop up quite often with older dated
> uncoated inserts on E-Bay.
> Take care, Meredith Lamb
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