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Member postings for Russell Eberhardt

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

Thread: Digital calipers made in same factory?
15/08/2019 09:53:35
Posted by Ian Johnson 1 on 15/08/2019 00:06:04:

Genuine or fake? Just to put peoples minds at rest, I bought the Moore & Wright and Mitutoyo both from Machine DRO. They don't sell fake stuff.

The M & W one is not correctly CE marked so it is currently illegal to sell in the U.K. so is it genuine? Still if Boris has his way any old rubbish will be legally available.

Russell

Edited By Russell Eberhardt on 15/08/2019 09:54:18

Thread: Furrows on a milled edge
06/08/2019 15:33:48
Posted by 34046 on 05/08/2019 19:43:12:

First thing noted is the use of the 3 jaw chuck as opposed to the drill chuck which I have been doing.

Surprised that nobody has picked up on that yet, or did I miss it? Using a drill chuck is a definite no. They are not designed to take the sideways force. You need to use a collet chuck or, failing that, a three jaw as Jason did.

Russell

Thread: Which metal for which job?
06/08/2019 10:32:01

Pivot steel can be turned using a sharp HSS tool. More traditional clockmakers would turn it freehand using a carbon steel graver. Having said that silver steel is fine for a first clock and needn't be hardened. Finishing the pivot with a burnisher should give sufficient hardness. Hardening it after turning risks distortion.

Russell

01/08/2019 20:51:15
Posted by Bazyle on 01/08/2019 12:56:57:

Silver steel is a high carbon steel <snip> You would use it for clock arbors and pinions since the specialist materials fro these jobs are no longer as readily available as they used to be.

Clockmakers suppliers still list pivot steel, a blued hard steel for making arbors. It is available from Meadows and Passemore from 0.33 mm to 3.22 mm diameter. It is also good for making lantern pinions. Silver steel is fine though.

Russell

Thread: Acetone
29/07/2019 14:59:20

As a possible explosive precursor, acetone is listed as a "reportable" substance. Legally anyone who sells it (including mixtures like nail varnish remover) must report any suspicious transactions. Thus shop staff must be trained to spot such transactions. I guess that's why many outlets no longer sell it.

The same rules apply here in France yet nearly all supermarkets still sell it smiley

Russell

Thread: What Did You Do Today 2019
28/07/2019 09:19:57

Interesting project John. I look forward to more details. May I suggest a weight tray halfway up the pendulum rod to make regulating easier?

Russell

Thread: Hot air machine identification
23/07/2019 11:18:17
Posted by Kerrsy on 21/07/2019 11:20:24:

Hi all

I've created an album but for some reason the pictures are side ways.

That's a common problem. The easiest fix is to open your picture in something like Photoshop or GIMP, rotate it to the correct orientation and save it before uploading it to your album.

If you're interested there is a good explanation of what's happening here:

**LINK**

Russell

Thread: Aldi bargain laser level
15/07/2019 09:41:44
Posted by RMA on 14/07/2019 07:30:22:

I wish posters would refrain from including a group of capital letters in their post which mean absolutely nothing to me! Am I the only one that doesn't understand these things. I'm assuming it's 'text speak', but this isn't texting is it?

I don't think it is "text speak". If I remember rightly many of these abbreviations started in the early days of Usenet discussion groups. The use of abbreviations helped when you were using a modem that operated at 1200 b/s downstream and 75 b/s upstream or even a 300 b/s audio coupler. Those were the days

Russell

Thread: My new lathe a Warco 918
11/07/2019 16:50:03

There should be two ball oilers on the top of the headstock. The grizzly manual specifies ISO 32 oil (equivalent to SAE 10W) I used to use a 10W/50 motor oil.

The Grizzly manual can be downloaded here

Russell

Thread: milling machine issue
11/07/2019 16:25:07

OK. Do you have any build up of aluminium on the cutting edge? If so you might need to lubricate with a little parafin or WD40 to prevent it. Feed rate should be quite fast, about 5 mm/second. The cutter needs to be really sharp. I find cutters designed for aluminium work much better than general purpose ones.

I doubt that your problem is a result of the heating but the heating is a result of your cutting problem.

Rigidity everywhere is important.

Hope that helps a lit.

Russell

Thread: Electric Cars
11/07/2019 16:05:27

Electric cars are not as clean as people are lead to believe. In the UK a large proportion of electricity generated comes from fossil fuel sources. Admittedly generating power in a power station is more efficient than in a car engine but you must not ignore distribution losses and battery charge/discharge efficiency. The net result is that the electric car is responsible for nearly as much CO2 emission as a petrol car.

Diesel vs petrol: Diesel cars are more efficient and produce less CO2. Older diesel cars produce a lot of particulates and NOx which give rise to poor air quality in cities however current models complying with euro 6.2 standards produce much less.

Russell

Thread: milling machine issue
11/07/2019 15:47:11

You need to give us a bit more information. Are you cutting using the full width of the cutter? Profiling or surfacing? Are you cutting free cutting mild steel, some unknown scrap, or a known alloy of aluminium. For mild steel 1500 rpm is way too fast for an HSS endmill and would result in a blunted and hot cutter.

Russell

Thread: What are these used for please?
09/07/2019 20:50:07
Posted by Neil Wyatt on 09/07/2019 16:43:35:

Not necessarily specific to clock making, they are just a way of holding thin rods in a vice without damaging them.

Neil

True, I've found lots of other uses for mine when working on small parts.

Russell

08/07/2019 15:51:29
Posted by Watford on 08/07/2019 14:34:23:

Are the two on the right possibly for drawing down wires?

M

They are used for supporting clock parts while working on them. For example while staking new trundles into a lantern pinion.

Russell

08/07/2019 09:59:53

The second two items in pic 1 are clockmakers' split stakes. Commercial ones are usually made of brass. The first one is probably for slotting screw heads.

https://www.amazon.com/Clockmaker-Split-Stake-Watch-Wheel/dp/B000RB5KUC

Russell

Edited By Russell Eberhardt on 08/07/2019 10:03:55

Thread: Phillips vs Pozidrive and portable drills
05/07/2019 10:28:40
Posted by KWIL on 05/07/2019 10:10:31:

Solve your "problem" by using the correct cross insert?

That's all very well but I had to visit three different DIY stores before I found the correct Pozi bit in Leroy Merlin. Perhaps it's just a problem in France.

Russell

05/07/2019 10:08:48

Why do portable drills always come with Phillips screwdriver bits when all screws on sale seem to be Pozidrive? I've just been repairing a wooden terrace and been mangling half of the screws in the process as a result.

Russell

Thread: My new lathe a Warco 918
04/07/2019 10:07:49

Well done. I had the Chester version of the 918 for a few years and found it to be a very good machine. The only downside I found was the high minimum speed so the VFD is well worthwhile.

Russell

Thread: Is this chuck too big/heavy?
03/07/2019 09:35:21

The 160 mm three jaw that came with my Atlas lathe weighs 9.4 kg. The only problem with it is lifting it with a bad back! Most of the time I stick to a 100 mm chuck.

Russell

Thread: Suitable wood for making tool holders
25/06/2019 19:21:57

If you can find it, nurizaya wood might be the best choice. It is used for storing valuable Japanese sword blades to avoid corrosion.

Russell

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