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john smith
 
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What yer saying depends on whether the tools are HSS. Personally I've not
seen any Sorby M2 HSS gouges or chisels. So I'm assuming the original
poster is talking about A2 turning tools which are not HSS. If you blue a
A2 tool steel turning tool you will soften the edge. So what are the tools
being used? I grind at about 300 rpm; at that speed you have to try to burn
the tools. You are also much more in touch with whats happening at the
wheel. I can feel and hear when the grind is right or not. I can also move
much more slowly through what ever motion I need to get the perfect shape
and bevel.

"Ray Sandusky" wrote in message
...
Walker

3450 rpm is justfine
the temper can not be lost on a hss tool
do not heat and quench hss tools too often as that can cause the steel to
crack
press lightly - the 1way will help alot

get white wheels for the grinder - one at 80 grit and one at 120 - makes

the
grinder more versatile
make sure your wheels are trued and run smoothly
use a diamond tool to dress the wheel's face so it will cut and not burn

the
steel

did i firget anything?
good luck and be safe

Ray





"Walker" wrote in message
...
I recently purchased the Wolverine grinding jig to go with my existing
grinder that runs at 3450. From all the reading I've done in this

group,
it
is recommended to sharpen tools on a slow speed (1750) grinder. Seems

its
easy to get a tool too hot and ruin the tempering if sharpened at 3450.

At
times, I can see the edge of my tools discolor a little. Couple of
questions:

1) The documentation that came from Oneway with the jig recommended

using
a
high speed grinder over a low speed grinder. Can someone give me some
thoughts on this. Why would they recommend slow speed? Oneway

contradicts
what most folks in here recommend.

2) Am I pressing to hard on the wheel with the tool. I certain don't

mean
to be....I'm trying to have a light touch but sometimes I do get some
discoloration on the edges. I keep a cup of water next to the grinder to
frequently dip the tool in to cool the metal?

3) Should I go ahead and buy a slow speed grinder? I surely don't want

to
ruin any of my new expensive Sorby tools!!!

This jig sure beats trying to free hand!!!!

Thanks,
Walker