Subject: Tool Grinding

From: [email-masked] (Russ Kepler)
Date: Thu, 25 Apr 1996 13:39:22 GMT

I am now ayt the point where I either cannot properly sharpen tooling,
or need better equipment to do so.  In that like I don't find a lot of
options that fit my needs:

1) Ability to sharpen HSS, CS, and carbide
2) Inside and outside grinding
3) Potential to upgrade to sharpening of endmills (face only, most
   likely) and other such tooling.

Currently, my most pressing need is to accurately sharpen brazed
carbide lathe tools as well as inserts.

On the low end of the cost scale I see the Worden from Hemingway,
looking like I could get it put together for 250-300 bucks.  But I'd
have some trouble changing wheels out all the time for carbide vs. 
HSS, and that pushes me to the Glendo system.  Problem is that the
Glendo is about 3-4 times the cost of the Worden, and there's really
not that much difference (other than flat diamond impregnated disks
vs. cone grinding wheels, and that doesn't account for all the cost).

Anyone know of anything somewhere in the middle?  Something a handly
guy can put together (and yes, I've considered both Lautard's Tinker
and the Quorn, but I don't need that level of complexity.

I'm hoping to see something at NAMES, and maybe I'll see some of you
there.  Some of us from the metalworking area on CIS will be at Scott
Logan's booth (Logan Actuator) at 2:00PM Saturday, so that could be
used as a partial meeting place.

-- 
Russ Kepler posting from home  [email-masked]

                      Please don't feed the Engineers

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From: [email-masked] (Jon Anderson)
Date: 26 Apr 1996 02:05:51 GMT

Russ,

The diamond wheels can be had from most good jewelry supply outlets.
That's where I got mine, though I used to use them for lapidary. It's not 
hard to make a spindle to mount them, and drive with a variable speed motor.
That leaves fabricating a tilting table and a few odds and ends.

This is one of the projects on my list for series of shop projects I plan 
to publish.

  Jon Anderson

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From: [email-masked] (James D. Szura)
Date: Fri, 26 Apr 1996 06:08:54 GMT

>                      Please don't feed the Engineers

How about a bench grinder with a "green" silicon carbide wheel.

Been using mine for ten + years, no problem. Total cost 50-60 bucks.

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From: [email-masked] (Jonathan M. Elson)
Date: 27 Apr 1996 05:22:49 GMT

Russ Kepler ([email-masked]) wrote:
: I am now ayt the point where I either cannot properly sharpen tooling,
: or need better equipment to do so.  In that like I don't find a lot of
: options that fit my needs:

: 1) Ability to sharpen HSS, CS, and carbide
: 2) Inside and outside grinding
: 3) Potential to upgrade to sharpening of endmills (face only, most
:    likely) and other such tooling.

: Currently, my most pressing need is to accurately sharpen brazed
: carbide lathe tools as well as inserts.

	 made an arbor so I could run standard 1 1/4" ID grinding wheels
on my bridgeport.  I have been sharpening end mills lately with it, but
I have also used it to make a boring bar out of solid HSS and other,
similar grinding work.  I got a very small cylindrical diamond grinder point
some years ago for touching up carbides.  I ran it in a micro drill press.
It was a little difficult to use because of the small point, but it did
work.  That set me back something like $18!

JTS has a 3 3/4" (I think) diamond cup wheel (with 1 1/4" center) on
sale this month for $49.95.  That is definitely a bargain.  They also
have some metal-backed diamond face wheels at good prices.  These can
be adapted to standard bench grinders.  I just got that diamond cup wheel,
but I haven't tried it yet.

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From: [email-masked] (Peter Brooks)
Date: Wed, 1 May 1996 17:32:37 GMT

/ hpcc01:rec.crafts.metalworking / [email-masked] (Timothy Manning) /  8:15 am  Apr 30, 1996 /
In article <[email-masked]>, Steve Wellcome <
[email-masked]> writes:

>I've noticed the Quorn in Model Engineer magazine and pondered how I would go 
>about sending a self-addressed-stamped envelope to England (don't have any 
>British stamps handy).  Do you know if the Quorn is available in the U.S. or 

There's a Web page for Hemingway, http://www.fotec.co.uk/mehs/index.html
nd Power Model supply sells the Quorn castings and the book.  I'm not sure
which is the better deal.  I think you can fax an order to Hemingway and
bill your credit card.  I have to admit, though that the last time I did
that it was several years ago and was $Cdn vs $US, but I've heard that the
major US cards are honored in the UK.

Pete Brooks
>----------

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From: [email-masked] (Peter Brooks)
Date: Thu, 2 May 1996 17:10:06 GMT

Oops, I noticed on reviewing the Hemingway web page that they don't sell
the Quorn castings.  Not sure who does in the UK.

Pete Brooks

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From: [email-masked] (Russ Kepler)
Date: Thu, 2 May 1996 22:16:53 GMT

>Been using mine for ten + years, no problem. Total cost 50-60 bucks.

That works well for the initial shaping, but I'd like to get a better
finish on the tools.  As a "for-instance", you can use a grinder for
initial shaping of a scraper blade, but you'd better not use that
blade for finish scraping as the chips and jaggies on the edge will
ruin the work in a hurry.

So it's not the grinding of carbide that's the problem, it's the final
finish and angles I'd like to perfect.

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From: Jeffrey Prothero <[email-masked]>
Date: Thu, 2 May 1996 19:00:51 -0700

I often use silicon carbide wet and dry sandpaper to polish tool bits that
I have ground.  The 400 to 600 grit stuff does okay for this.  Worthless
for shaping.........
				Cheers,

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From: [email-masked] (Randolph Lee)
Date: Fri, 03 May 1996 09:35:46 -0400

In article <[email-masked]>, [email-masked]

> the Quorn castings.  Not sure who does in the UK.

For some unknown reason the details of MES are not in the FAQ and I know I
have typed this info before....

Model Engineering Services
Pipworth Farm, Pipworth Lane
Eckington, Sheffield S31 9EY

Tel 011 44 1246 433218 (from the US... in the UK it is just 01246 433218)

The owner, Ivan Law, (the author of 2 very good books in the Nexus Press
Workshop Practice series "Measuring and Marking Metals" and "Gears and
Gear cutting") is a delight to talk and deal with and a charming host if
you drop by (they ask you to call first) Eckington is a small village
outside of the city of Sheffield and the farm is quite close to the main
village roundabout... easy to find just ask at the pub...

they also have kits for the Dore Westbury MkII vertical Milling machine
(20X6 or 16.5X5.5 table with 4.5" quill travel and speeds of 30 to
1900rpm): a nice linishing machine, the Kennet tool and cutter grinder
(much easyer to build and use than the Quorn but not as universal) and a
selection of dividing head, rotary table, vices, lathe steady kits are
also on offer... in the UK a SAS 9X4 envlope will get you the flyers on
all of their stuff and overseas I think 6 IRCs should do the trick.