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----- Original Message -----
From: Chris Eilbeck
To: 7x12minilathe@...
Sent: Saturday, March 10, 2007 9:47 AM
Subject: [SPAM] Re: [7x12minilathe] 1st Timer Accessories-Tool Bits (HSS vs Carbide)


On Sat, Mar 10, 2007 at 11:26:20AM -0500, Aaron Pasteris wrote:
>
> The difference between inserts and a honed/polished HSS tool is night&day.

I guess brazed carbide must be pretty bad then because I've found inserts to
be a whole load better than those.

> Plus, how do you get a form tool as an insert?

What's a form tool?

Chris
--
Chris Eilbeck
MARS Flight Crew
UKRA #1108 Level 2 UYB
Tripoli UK Member #9527 LSMR

----- Original Message -----
From: Chris Eilbeck
To: 7x12minilathe@...
Sent: Saturday, March 10, 2007 11:43 AM
Subject: Re: [SPAM] Re: [7x12minilathe] 1st Timer Accessories-Tool Bits (HSS vs Carbide)


On Sat, Mar 10, 2007 at 10:48:17AM -0800, Charles E. Kinzer wrote:
> A form tool, or "forming" tool bit, has a particular shape ground into it
> for making a particular shape on the workpiece that would be hard to do
> with regular tool bits.
>
> For instance, if you wanted to machine a 1/4" groove with an 1/8" radius
> at the bottom of the groove, you could grind a forming tool with that
> shape, just plunge cut in with it, and get that result.

Gotcha. Thanks.

Chris
--
Chris Eilbeck
MARS Flight Crew
UKRA #1108 Level 2 UYB
Tripoli UK Member #9527 LSMR