Using Harold Hall’s Deluxe Grinding Table

[Chuck PickeringParticipant @chuckpickering45941]

[Chuck PickeringParticipant @chuckpickering45941]

I have built Harold Hall’s Deluxe Grinding Table, and am slowly setting up my grinding station. I am also working on the accessories for the table. I have built the lathe tool jig, and the round tool jig, and am working on the drill bit jig.

I purchased a dedicated bench grinder for this setup. On it, I have mounted a diamond taper cup wheel (for carbide), and a aluminum oxide straight cup wheel (for HHS).

One thing Mr. Hall did not include in his books (at least in those I have) is a jig to hold a single point diamond dressing tool, for Aluminum Oxide wheels, that will work with his Deluxe Grinding table.

Has anyone here built this table? What custom jigs did you come up with? Do you have a jig for a single point diamond dresser that works with the table?

I’ve seen dresser jigs advertised and written about on woodworking sites and some of them set the single point diamond pointing directly toward the center of the wheel, some point the diamond downward at 10 degrees to the center of the wheel. Which is best?

I want to build a diamond dressing tool jig from CRS to work with Mr. Hall’s table. Any advice or pictures of your setups would be appreciated.

Chuck

[Oompa LumpaParticipant @oompalumpa34302]

Posted by Chuck Pickering on 24/06/2014 18:05:50:

I have built Harold Hall’s Deluxe Grinding Table, and am slowly setting up my grinding station. I am also working on the accessories for the table. I have built the lathe tool jig, and the round tool jig, and am working on the drill bit jig.

Chuck

Pics, we need Pictures. Essential I would say.

please?

graham.

[Danny M2ZParticipant @dannym2z]

The end-mill blocks may be used to hold a round single point diamond dresser used in conjunction with the fence set parallel to the face of the wheel. Graphite powder makes a useful dry lubricant for the table top.

I tilt my table downward a few degrees, any more and the wheel wants to grab the diamond and tilt it downwards,

Cover everything within range at the dust is very abrasive.

* Danny M *

[Chuck PickeringParticipant @chuckpickering45941]

Thanks, Danny. Graham, I'm getting ready to go on holiday, but I will try to post pictures. If not before, then I promise when I return.

Chuck

[Rik ShawParticipant @rikshaw]

Chuck – Have not built the table but HAVE done a little grinding. When dressing with a single point diamond the idea is to keep the diamond point intact, this means tilting the diamond at an appropriate angle and rotating it in its holder between successive dressings. In industry, the dressing procedure (on a universal grinder say) would be carried out under flood cooling, this helps lay the dust but more importantly, stops the heat that is generated from loosening the diamond in its mount.

For us light duty lot the absence of flood cooling should not pose to great a problem provided the dressing is not to heavy or prolonged. The dust problem still remains though and I mitigate it by using a small hand vacuum cleaner as an extractor.

BTW, if you are contemplating work with superfine finishes at any time I would recommend a multi point diamond dresser instead. These are made with tiny chips of diamond embedded in a matrix. The angle and rotating advice for a single point does not apply to this type.

Rik

[Martin KyteParticipant @martinkyte99762]

If you are dressing wheels and can possibly do it outside it's worth the effort.

Martin

[jason udallParticipant @jasonudall57142]

While on the subject of wheel dressing. ..can I state the obvious. ….
Ask whether your wheel is of useful size once dressed…I know we aren’t talking about much off but … this would be the time to consider how much wheel is left and is it worth dressing this one or its replacement.

[Chuck PickeringParticipant @chuckpickering45941]

I'm still working on the finishing touches of the table (adjusting handles instead of temporary bolt and nuts) and making the accessories (drill jig). The humidity is uncomfortably high today. I'm going to set up a window type airconditioner to help that problem, and then I'll take some pictures.

Chuck

[martin perman 1Participant @martinperman1]

Gentlemen,

Where can the plans for this table be found.

Martin P

[Les Jones 1Participant @lesjones1]

Hi Martin,
I would guess that this is the grinding rest Colin is referring to.

Les.

[Chuck PickeringParticipant @chuckpickering45941]

Martin, The plans for the simple rest and deluxe rest are found in Harold Hall's books mentioned in the link Les posted.

Chuck

[martin perman 1Participant @martinperman1]

Gentlemen,

Thank you, another book is about to join the collection.

Martin P

[Les Jones 1Participant @lesjones1]

Hi Chuck,
The book I have only covers the "Simple" and "advanced" grinding rests. Which book covers the "deluxe" grinding rest ?

Les.

[Chuck PickeringParticipant @chuckpickering45941]

The "Deluxe" rest is covered in "Milling, A Complete Course", or the newer print version "Milling for the Home Machinist. Both are the same book, just different publishers.

The rest and it's accessories were also serialized in MEW beginning in April 2003.

The simple rest and drill sharpening jigs are in the book "Tool and Cutter Sharpening" which is # 38 of the Workshop Practice Series.

Chuck

[Chuck PickeringParticipant @chuckpickering45941]

As promised, pictures of my HH Deluxe Grinding Rest, the lathe tool jig, and round tool jig. Drill jigs, and diamond dressing tool jig have not been built yet.

Herself and I leave on holiday Saturday morning, so not much more will get done for a couple of weeks.

Pics here: **LINK**.

I will have internet and e-mail while on holiday.

Chuck

[DazzamatazzParticipant @dazzamatazz]

Hi Chuck

The album HH Deluxe Grinding Rest is empty.

Darren.

[Ian S CParticipant @iansc]

Chuck, the album is OK here!! Ian S C

[Chuck PickeringParticipant @chuckpickering45941]

It's wierd, the album works for me sometimes and sometimes not. Try this link: **LINK**

Chuck

[ASFParticipant @asf]

I cant view. I see the message.

chucketn's Library is Private

[Chuck PickeringParticipant @chuckpickering45941]

Posted by ASF on 27/06/2014 11:57:27:

I cant view. I see the message.

chucketn's Library is Private

Try again, I just found the setting to make it public.

BTW, notice 3 types of ball ends on the handles. I've been working on this project for a couple of years. Ihe steel handle was made first, then I tore my ball cutter appart to improve it and it's still appart! The black plastic ball was from something my late Dad was working on. I used wooden balls for the last two, just to get it finished. I'll probably be making changes for the next couple of years until I like it!

Still have the two drill sharpening jigs to make and a diamong dresser jig.

Chuck

Edited By Chuck Pickering on 27/06/2014 12:07:56

[Chuck PickeringParticipant @chuckpickering45941]

With the help of my buddy Todd, I have completed Howard Hall’s Deluxe Grinding Table as described in his books. I have also completed the lathe tool jig and round tool jig and will make the drill jigs when I return from vacation.

If you have built this table, I would like to see pictures/descriptions of your set ups and how you use your table. I have not completed my setup yet. I purchased a new bench grinder and replaced the standard grey wheels with a diamond cup for carbide and a white aluminum oxide straight cup for HSS. The guards over the standard wheels need to be modified to cover the new cups, and my table needs to be mounted, so I have not used the table or grinder yet.

I am also interested in seeing any methods of mounting a diamond dressing tool on the table to dress the white wheel. Todd kindly gave me a diamond dresser that is mounted on a ½” dia. x 1 ½” shank and I need to design and build a jig for it.

I am not the greatest machinist in the world, and I started this table early in my experience level, so the fit and finish isn’t pretty. When I visit Todd the next time, I hope to have him grind the parts of the table and my attempts at tool jigs, and when that’s done, I’ll post pictures.

In the mean time, I hope to see lots of pictures and techniques posted here so myself and others can learn from them, so TIA!

Chuck

Post appended to this thread for continuity

Edited By Neil Wyatt on 02/07/2014 16:13:11

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