Cutter and lathe tool grinder advice need

[SvarvenParticipant @svarven]

Hi
I am in need of a grinding machine for milling cutters and turning tools.
Since I know you oldchao out here possess a lot of knowledge on the subject.
Can you give me some advice on what kind of device I'm going to build me.
Not too complicated, not too expensive but good enough.
Is Harold Hall grinding rest, which he describes in his book, stable and accurate enough. Quorn looking too complicated to build and use, and expensive also. But what about the Hart grinding rest, Reymac cutter grinder, Worden, etc.

Bertil

[SvarvenParticipant @svarven]

[NJHParticipant @njh]

Hi Bertil

Harold's design is highly recommended by posters on this site and has the distinct advantage of being cheap to make. What is more Harold often posts here and has a superb website that contains loads of info.

I am part way through a Stent grinder – and I have been for some time! An interesting exercise that may, one day, be useful but if all you want to do is to sharpen a few tools then you can buy a lot of cutters for the cost of building the Stent, Quorn etc.

Regards

Norman

[Harold Hall 1Participant @haroldhall1]

I will not comment on the grinding rests Bertil, I may be biased, but should you decide to go down that route the the following pages on my website may be of help.

Three simple mods,

**LINK**

Helpful mounting method

**LINK**

The thinner arms mentioned in the three mods page are worth doing otherwise I leave it to you

If you are not conversant with my website a good place to start is the index

**LINK**

You mention the Hart rest, unfortunately this is no longer available.

Harold

[SvarvenParticipant @svarven]

Thanks

Harold

I have looked at your sanding block many many times in the grinding book. but thought it looked a bit too weak out.
But now understand that it is not so.
So I am considering making it along with the accessories.
Maybe I enhances the foot with a micrometer adjustment.

Bertil

[Harold Hall 1Participant @haroldhall1]

I should have asked Bertil which book you are referring to as I have produced two grinding rests. Both can produce good work and are robust enough for the task.

The one in the book "Milling a complete course" is though the more rigid. The other works well but needs just a little more care in its use. It is simpler as it was designed so that it could be made in a workshop that did not have a milling machine, though of course, it can be made using a milling machine if one is available.

Harold

[Alan HopwoodParticipant @alanhopwood63369]

I made, and quickly sold a Quorn, as I found it too fiddely to do the work required. I then made a Stent, which I still use, but fitted a Quorn grinding spindle. The most useful task for the Stent has been four and six facet drill sharpening. Having said all that, both machines take a fair bit of making. It is a good job that my main hobby looks to be making tools to make tools.

Regards,

Alan.

[BazyleParticipant @bazyle]

funny that, no mention of a Hart jig for years then it appears on here and one pops up on ebay within hours.

[Michael HornerParticipant @michaelhorner54327]

Hi Bertil

have you seen the "Cross vice + grinder = Quorn?" thread? Food for thought!

Cheers Michael

[Ray LyonsParticipant @raylyons29267]

Have a look at the Colyer/Caseley cutter grinder featured in MEW a couple of years ago. Very much like the Quorn but much easier to construct.

It is a project I intend starting when the weather permits. Drawings are available from http://www.bristolmodelengineers.co.uk at £12.50 a set, including postage.

I will look up the MEW issue later and let you know.

Cheers, Ray

[Les Jones 1Participant @lesjones1]

The Colyer/Caseley cutter grinder was in the August 2011 issue of MEW (Issue No. 179)

Les.

[SvarvenParticipant @svarven]

Hi

Harold I think about the one in the book "Milling a complete course".

Im not a member of the bristol modellenginners so I could not open the drawing page.

So howe to by the Colyer/Caseley cutter grinder drawing then.

Bertil

[BazyleParticipant @bazyle]

Bertil,
this is a picture of the Colyer/Caseley. Only one I took I'm afraid. I'm sure a member of the Bristol club will spring into action and contact you shortly.

[SvarvenParticipant @svarven]

Thanks

Les J, i looked at you album and found an interesting tacho, do you have the drowing and what kind of sensor are you using to it.

Bertil

[Les Jones 1Participant @lesjones1]

Hi Bertil,
I submitted the tacho design to MEW but it was not accepted. You can find details on my website. Let me know if you need any more information on it.

Les

[David Clark 13Participant @davidclark13]

Hi Les

I don't remember recieving it.

When and how did you send it?

regards david

[SvarvenParticipant @svarven]

Thak you Les.

What programmer dis you use to program the PIC.

Bertil

[Sub MandrelParticipant @submandrel]

How do you confuse an electronic engineer?

Show him a row of AVRs and tell him to take his PIC.

Neil

 

Edited By Stub Mandrel on 27/02/2013 20:46:08

[Les Jones 1Participant @lesjones1]

Hi David,
I sent you an email with a link to a zip file on my website which contained all the files for the article. The email was sent on 25/02/2010 at 16:14 You must have recieved the email as you replied at 16:24 on the same day. The link to the zip file will no longer work as I removed the zip file after about a year to save space.

Les.

[Les Jones 1Participant @lesjones1]

Hi Bertil,
I think I used a PICKIT2 to program the PIC but it could have been one of the parallel port type programers which I used before I bought the PICKIT2.

Les.

[David Clark 13Participant @davidclark13]

Hi Les

I probably tried to download it but If I had to register to access it, I would not have done that.

regards David

[Les Jones 1Participant @lesjones1]

Hi David,
You would not have had to register to download the file. If you would like to see the files for the article then let me know and I will see if I still have the fliles on one of my old computers.

Les.

[Another JohnSParticipant @anotherjohns]

Bertil;

I'm finishing up a Worden grinder from Hemingway Kits.

I'm sure Harold Hall's fixtures would be fine, but with the Worden I get fairly precise control over the tooling shape; something that I *think* i need for a future project. (this Worden is my "tooling up" for this project)

I'm waiting for MEW issue 198 to come this way so that I can see what the ER25 collet holder for the Worden is like.

I'm describing some of the build on my blog; there are some pictures of the Worden there, too.

http://cnc-for-model-engineers.blogspot.com

should get you there, if you are so inclined.

The Worden build is fine; kit of parts is great (no scrounging suitable bits of metal and fasteners); I'm glad that I purchased this, and I'm glad that it's 99% complete!

Another JohnS.

[David Clark 13Participant @davidclark13]

Hi Les

Yes, if you have it I would like to see it.

regards David

[SpringbokParticipant @springbok]

Hi Bertil
Am a member of BSMEE so will try and sort this out for you today

Bob

must get a new keyboard

Edited By Springbok on 01/03/2013 06:34:42

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