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Member postings for John Reese

Here is a list of all the postings John Reese has made in our forums. Click on a thread name to jump to the thread.

Thread: Positioning bushes for welding
17/11/2019 18:19:41

My preference would be a bush with a shoulder on the OD to set depth and squareness.

Thread: Extending router shanks
13/11/2019 20:22:27

Please don't try to extend the spindle. At the 20000 or so rpms there is not much tolerance for imbalance in the extended cutter. I chucked a fairly long mounted stone in my Makita die grinder (20000 to 24000 rpm) Dur to the overall length of the stone and the imbalance as soon as I hit the switch the shank of the stone made a sudden right angle bend just outside the collet. It became really exciting. I needed both hands to control the grinder and could not reach the toggle switch on the back of the grinder. All I could do was kick at the cord to knock the plug out of the socket. Eliminate the dust shoe and use standard tool stickout. Tolerate the extra cleanup to prevent the potential damage and injury if the extended becomes unstable.

Thread: Allchin Gears- thinking of using pre-cut chinese
11/11/2019 18:39:53

Recently I bought 3 gears to replace the missing change gears on my Nardini lathe. I searched on eBay to find the best prices. The 40 and 100 tooth gears came from Chinese vendors. The 127 tooth gear came from the Netherlands. I was amazed at how inexpensive the gears were.

Thread: 2 point steady identity
09/11/2019 21:27:43

It is for an OD grinder.

Thread: Tools of unknown types.
29/10/2019 00:41:46

There a lot of similar collet chucks on the market. They are definitely not ER type collet. They resemble Acura grip or TG collets but my not be compatible with either system.

Thread: Jacobs model 6414 chuck - removal
27/10/2019 21:50:17

That model chuck is probably the worst Jacobs ever designed. It was used primarily on "home utility" drills. Replace it with a real chuck, either keyed or keyless. Your chuck appears o have a male thread for mounting. Most chuks have a female thread in the back. I think it is a 3/8-24 thread. A short piese of threaded rod is all that is needed to adapt the newer chucks to your drill.

Thread: Stripped thread / Pultra P type
22/10/2019 17:00:01

It should not be a difficult job to make a replacement. If in doubt about the thread form, use the leadscrew as a template for grinding your threading tool. The flat at the end of the tool should be a little narrower than the flat at the root of the screw thread. That allows a little clearance at the root of the thread,

Several years ago on my first day in the machine shop the compound leadscrew stripped out of the nut. I had to find a piece of bronze big enough to make the nut then machine a new nut.

Thread: What is this thread called these days? 3/4"-16 SAE
22/10/2019 16:51:22

I believe the SAE callout was abandoned many years ago and replaced by UNF.

Thread: Is this chuck mounted on a 5C collet?
11/10/2019 00:17:53

It looks that way. I have a small 4-jaw on a 5C collet body. It lets me adjust work dead true when using an indexer.

Thread: Creating Heat for Hardening
09/10/2019 22:28:25

My uncle, an engraver hardened his gravers at the kitchen range. I believe he used an alcohol lamp when drawing back the temper.

Thread: Sharpening Machine Drills / Clarkson T&C Grinder
09/10/2019 22:17:21

I grip my drills on the OD of the flutes using either 5C or ER32 collets depending on the size. I grind a 4 facet point. The greatest need in any drill grinding setup id that it can index exactly 180 deg. to get the flutes equal. I am thinking of getting a 4" 6-jaw chuck so I can expand the range of drills I can sharpen.

Thread: Telescopic bore gauges
09/10/2019 22:11:20
Posted by mechman48 on 17/04/2019 17:48:13:

… 'Also, I believe Starrett make a set with 2 sliding bars. Maybe someone could confirm this'?

I have a set; as previously mentioned I have not had any bother using them ...

bore gauge set (1) 8-152mm.jpg

bore gauge set 8-152mm.jpg

George.

The set with tapered sliding bars was made by Brown & Sharpe. I have set. Great for checking cylindrical bores. Useless if there is taper.

09/10/2019 22:11:02

Buying cheap telescoping gauges is a mistake. Buy the best quality you can find. M&W, Mitu, NSK,...

09/10/2019 22:08:37
Posted by mechman48 on 17/04/2019 17:48:13:

… 'Also, I believe Starrett make a set with 2 sliding bars. Maybe someone could confirm this'?

I have a set; as previously mentioned I have not had any bother using them ...

bore gauge set (1) 8-152mm.jpg

bore gauge set 8-152mm.jpg

George.

The set with tapered sliding bars was made by Brown & Sharpe. I have set. Great for checking cylindrical bores. Useless if there is taper.

Thread: Grinding wheel 'washers'
07/10/2019 19:53:58

I cut my "blotters" from the cardboard back of a writing tablet.

Thread: New tool post for my lathe
03/10/2019 22:50:34

The Dickson tool post is quality item. For it to locate accurately the distance between the Vs has to be spot on. Most of the Dickson style toolposts seem to be clones of the originals. I question if the makers of these clones adhere to the C-C dimension of the original Dickson.

The wedge type of Aloris clone is pretty forgiving about tool holder geometry. The only critical surfaces for accurate locating are the face of the tool holder and the face of the front dovetail.

Thread: Cutting tools - what type is most suitable?
01/10/2019 03:04:11

I suspect at some time you will want to make some form tools. You will want HSS for that so get a grinder with proper wheels. Learn to grind your own tools. You will also want a Dremel or similar tool form inside radii on some tools.

Thread: cutter slippage using ER series collets
27/09/2019 23:20:12

I think most of us under-tension the collet nut. I believe the iseal tightening torque for the ER32 size is around 100 ft.lb. A young strong man in his prime might be able to achieve that torque with the wrenches provided. For those of us that are old and decrepit there is no way to tighten the collet sufficiently without putting a cheater pipe on the spanner.

Thread: Fixed steady use
03/09/2019 16:15:39

A method that works for me is this:

Set the steady where you want it, jaws nor touching the work. Turn the work slowly. Advance the front finger of the steady until that finger makes 360* contact with the work. Do the same with the back finger. Adjust the top finger for desired tension.

If you have roller fingers in your steady a holding your finger against the roller will help you determine when you have full contact. The roller will stop momentarily when it is out of contact with the work.

Thread: Shape of insert on Sherline Lathe
29/08/2019 21:43:21

That should say 80* included angle.

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