Member postings for Russell Eberhardt

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

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

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

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

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

Russell

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

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

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

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

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

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

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

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

Russell

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

Russell

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

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

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

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

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

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