Re: [CAD_CAM_EDM_DRO] Hardening rails

Thanks everyone for the info!

Looks like I'll be using it as-is :-)

Maybe if my router/mill works well enough when I finish the upgrade, I
can drill more rods
and make supports for them. Such as the Thompson rails. I know they
won't equal them.

Like my wife and I were discussing the other day, "It looks like a good
<whatever>." Yeah,
it /looks/ like a good <whatever>, but it isn't one.

I really do appreciate all the time everyone put into their replies.
I'll file them away
for future reference.

Regards,
JJ

On Saturday, November 22, 2003, at 09:45 PM, JanRwl@... wrote:

> In a message dated 11/22/2003 12:35:07 PM Central Standard Time,
> johnatl@... writes:
> Maybe I could put it in the oven at 500deg?
> JJ:
>
> MANY "in here" have already answered your question several times in
> more than
> one way, but here's ANOTHER answer from an old [deleted] who has used
> LOTSA
> Thomson stuff: Their "Class L" is case-hardened to RC-60 (that's like
> a new
> file), and PRECISION centerless-ground to some precision measured in
> "tenths".
> It is STRAIGHT within, what, 0.001" per foot, or something like that.
> There
> is NO WAY without oversize rod, straightening-equipment, and
> centerless-grinding equipment that you will APPROACH the required
> precision for proper function
> with linear ball-bearings. Just bite the bullet and PAY those
> OUTRAGEOUS
> prices Thomson charges, and be DONE with it!
>
> I have found that paying for the GOOD stuff will COST you less in the
> end, if
> you hope or expect a piece to last until the following Monday!
>
> Jan Rowland
>
>
> [Non-text portions of this message have been removed]
>
>
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