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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: Mystery Machines from Switzerland
20/07/2019 15:50:39

I would guess they are from the watchmaking industry.

Thread: A little rant about Emojis and their kin
17/07/2019 00:34:50

I, too, detest the damned things. Imagine the resources that were wasted creating them. They seem to appeal most to those who have inadequate language skills.

Thread: Single DRO for 2 machines
16/07/2019 21:44:39

Consider buying a 4 axis DRO. The scales can stay connected permanently.

Thread: Best way to cut HSS tool blanks from bar?
16/07/2019 21:39:08

Just cut it witth an abrasive disc and do not worry about loss od hardness. I do it often.

Thread: Phillips vs Pozidrive and portable drills
05/07/2019 13:45:20

Robertson heads are quite common in the US also. We see some screws with a combination head: Robertson and Phillips. They seem to strip out more frequently than either the Robertson or the Phillips. The higher grade fasteners are mostly Torx drive now.

Thread: Internal collets
04/07/2019 00:37:21

Expanding collets are made. Here is an example for a watchmaker's lathe:**LINK**

At one time I had a similar collet in 5C size. At the time I didn't have a lathe so I gave it away.

Thread: Is this chuck too big/heavy?
03/07/2019 04:22:50

The weight of the chuck itself will have a negligible effect on the spindle bearings. The cutting forces when turning are greater than the weight of the chuck. A greater problem is the total thickness of the chuck. Bigger chucks are thicker. The effect is similar additional stickout of the workpiece.

Thread: Removing Broken Tap
03/07/2019 04:15:27

I think it would be worthwhile to keep some small diamond core drills on hand for removing broken taps or drills. Example:**LINK**

Thread: Gear Measuring
03/07/2019 04:06:50

You can grind a tool bit to the correct profile. Use one of the existing planet gears as a template. Use the tool bit in a flycutter. I have used that method to cut gears of nonstandard pitch or pressure angle.

Thread: Total newbie question - Collet identification
22/06/2019 21:23:05

The collet shape is very similar to the collet in my Porter Cable router.

Thread: Using a pillar drill for milling?
22/06/2019 21:15:29

It is possible remove a lot of metal by chain drilling. Using an endmill instead of a drill will allow a little overlap of the holes. If you can get rid of nearly all the excess metal by chain drilling you might be able to get away with very light milling passes to clean up. Note my emphasis.

Thread: How to de-oil an oilstone?
20/06/2019 21:39:12

I used to keep my stones in a pan of Kerosene. Never had any buildup of crud.

Thread: Historic Frogs
20/06/2019 21:29:46

Froggy the Gremlin from the Buster Brown show, sponsored by Buster Brown shoes.

Thread: How to machine Acetal
14/06/2019 21:34:39

I use HSS. Lots of rake and polished top and face.

Thread: Hardening a form tool made from Gauge Plate
14/06/2019 21:29:13

When quenching in oil keep the part moving to expose the surface to fresh oil. It improves the heat transfer.,

Is there a possibility the gauge plate was mis-labeled? Low carbon plate could explain the problems you are experiencing.

Thread: ER25 collet arbour grub screw
12/06/2019 21:07:23
Posted by John Haine on 12/06/2019 20:42:27:

It may be to make sure the cutter goes in at a repeatable projection from the collet. I have some ER16 collet chucks with something similar.

Yes! It also prevents the tool backing up during a heavy cut.

Thread: Making a tiny reamer
03/06/2019 16:44:36

Hold it in soft jaws in a vise with only enough projecting to file the point. Hold it in a pin vise or small chuck when reaming,

Thread: Motorcycle 'blipping'...
03/06/2019 16:27:24

Rednecks do it in cars.

Thread: Cast iron dust , is it really that bad for lathe beds.
02/06/2019 21:31:34

A major problem with small and thin-walled castings is chill. There isn't enough mass of metal to slow the cooling rate. The result is an extremely hard casting. A similar problem exists with larger castings that are dumped from the mold to early. The result there is an extrermely hard skin.

02/06/2019 20:02:09

I have worked in shops that ran a lot of cast iron parts. No special precautions were taken with the machinery. It is messy and because of that I don't like to machine it but I don't worry about damage to my machines.

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