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Member postings for Neil Wyatt

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

Thread: I'm In Love With PETG
13/04/2023 18:33:00

Useful to know.

I use PLA+ for most things now.

Neil

Thread: Digital Archive - Error Message
13/04/2023 18:30:51

I have been trying to help Mason with this.

It seems his subs details are correct according to the database, but the archive is failing to validate them.

If subscriptions can't sort this tomorrow, I'll ask the IT team to investigate.

Neil

Thread: ChatGPT incoming
09/04/2023 21:01:44
Posted by Bazyle on 09/04/2023 19:56:01:

Come on, you've got to ask it the most common question: What lathe should I get?

I asked it to choose between two options:

"Both the Myford Super 7 and the SC4 lathe are high-quality machines that are suitable for advanced hobbyists and professionals. The decision on which one to choose ultimately comes down to your individual needs and preferences.

rose-invert light">

"The Myford Super 7 is a classic lathe that has been around for many years and is known for its quality and durability. It has a robust construction and is designed to handle a wide range of materials and applications. The Super 7 has a reputation for precision and accuracy and is a popular choice for those who require a high level of accuracy in their work.

"On the other hand, the SC4 lathe is a more modern machine that has a more modern design and features. It is also a high-quality lathe that is suitable for advanced hobbyists and professionals. The SC4 has a slightly larger swing and distance between centers than the Super 7, which makes it more suitable for larger projects. It also has a digital readout and other modern features that make it easier to use and more efficient.

"In summary, both the Myford Super 7 and SC4 lathe are excellent machines, and the choice between them ultimately comes down to your individual needs and preferences. If you need a classic and robust machine that has been around for many years, then the Myford Super 7 might be the better choice. If you prefer a more modern design and features, then the SC4 lathe might be the better choice."

09/04/2023 20:55:55
Posted by Jelly on 06/01/2023 18:46:48:

As I understand it, the model is incapable of expressing uncertainty, and is compelled to write whatever it can on a given subject even when it doesn't have good data on which to base it's output.

I asked it 'Is the Kugelpanzer' a hoax, and it wrote a well argued case that it is a hoax, but offered some evidence on both sides.

I asked Bard, and it was adamant that the Kugelpanzer is real.

(It's a good question as there is a 'Kugelpanzer' in a Russian tank museum, but it's authenticity and provenance are disputed, so a nuanced subject).

N.

Thread: Knurling wheels misterry
09/04/2023 18:55:34
Posted by Martin Kyte on 07/04/2023 17:57:00:
Posted by Neil Wyatt on 07/04/2023 17:19:14:

If the wheel has two pitches, it can't slip to lock in with both of them, it either goes sideways or produces a bastard knurl.

Neil

But it doesn’t have two pitches it’s two independent wheels each forming their own series of ridges.

regards Martin

Of course! Excuse my brain f*rt!

N.

07/04/2023 17:19:14

If the wheel has two pitches, it can't slip to lock in with both of them, it either goes sideways or produces a bastard knurl.

Neil

Thread: Improved Experimental Pendulum
07/04/2023 16:47:17
Posted by Martin Kyte on 07/03/2023 10:38:15:

Hi John

Could you explain a little more about your vacuum filled bellows. I can’t imagine how that works?

regards Martin

I was tempted to say he took all the air out, then carefully let some vacuum in

Neil

Thread: Clarke CL300M motor axis diameter
07/04/2023 16:44:44
Posted by thomas ryckmans on 07/04/2023 11:12:04:

Hi everyone,

I need to change the timing pulley of my CL300M lathe, the spare part I received from ARC (C3-148 Motor Timing Pulley) has an internal diameter of 8.85mm but the axis of the motor has a diameter of 7.91 mm, so of course the pulley moves around. Are there several models of these lathe, where the axis diameter has been changed? Any help much appreciated! As I don't live in the UK anymore, I can't just bring the lathe to a shop

many thanks!

Thomas

That's the problem with mini lathes ... different factories, different detail; specs

Consider a sleeve as suggested above. A temporary wrap of insulation tape may last long enough to make one.

Neil

Thread: 3 1/2" Gauge Discussion Group
07/04/2023 16:41:45

I rotated your pics Richard.

Thread: Review of Creality Halot One
06/04/2023 23:59:40
Posted by Roderick Jenkins on 06/04/2023 19:40:19:

Interesting review, thanks. I may have to re-think my views on SLA printers.

Rod

The main downside is keeping things clean, bearing in mind that any spilled resin will slowly cure. Also, you need the propanol 'loads' with resin, but you can use the curer to make it precipitate out (not completely) and then get rid of the goo at the bottom (which will set and become inert if left outside). In short, you benefit from becoming a bit more methodical, but a doddle for anyone who used to do 'real' photography!

Neil.

06/04/2023 23:56:11
Posted by lee webster on 06/04/2023 19:37:55:

It would be interesting to see a side by side test of the same part printed on a resin printer and a ffd printer. I think the resin printer would win hands down in surface quality, whereas the ffd print would be stronger. But saying that, I have used resin printed patterns when sand casting a small flywheel and con-rod. The prints stood up to the process perfectly. Cost and time of the prints could also be interesting.

I will be doing this over coming months, not an article in every issue though!

The tough resin is ... tough!

Neil

06/04/2023 18:13:37

My review of the Creality Halot One 3D Sterolithography (SLA/ Resin) Printer

Halot One Review

In short, I've been having (and continue to have) a lot of fun. Have been using tougher, slightly flexible resin since the review. It's much less brittle (actually has some give) but is fussier about part orientation and support.

Neil


There are more photos in the magazine article (Moidel Engineers' Workshop issue 327). For avoidance of doubt the links to the Creality shop are not affiliate links, they are just for your convenience and tell them that you came from the article (but they do have a big sale on!)

 

Edited By Neil Wyatt on 06/04/2023 18:14:44

Thread: Timber and the risk of it causing corrosion
05/04/2023 23:21:18

You need water AND oxygen for rust (hence the survival of objects in anaerobic marine mud).

Virtually every Victorian and early 20th century screw or nail I have seen in a door, joist or floorboard has some degree of rust regardless of the timber.

Neil

Thread: Forum Platform Changes - PLEASE READ
05/04/2023 23:17:28
Posted by DC31k on 05/04/2023 10:37:41:

Edit: if the forum wants to put smiley faces in perfectly good Python code, that is its problem, not mine.

I think that nicely justifies the change in itself!

Neil

03/04/2023 22:46:47
Posted by Vic on 02/04/2023 13:23:42:

How is the new software coming along. Do you need any more Guinea Pigs? I mostly use an iPad Mini for viewing this forum.

WE have several beta-test volunteers (nothing happening yet though).

I'm sure a few more would be useful, but I don't know if everyone offering will be asked to take part.

Thanks

Neil

Thread: State Pensions - Notification thereof.
03/04/2023 22:44:17

My dad's letter came on Saturday or Monday.

Surname starting with W, so maybe it's alphabetical!

Neil

Thread: Mitsubishi VFD question - single phase input possible?
29/03/2023 22:36:19

A 1994 inverter is probably getting ready to let the magic smoke out of its electrolytic capacitors, although running it up for half and or more every 6-12 months.extends life.

Neil

Thread: Pocket Sundial
29/03/2023 12:15:22

Available at considerable discount on Amazon... from the makers.

29/03/2023 12:10:24

Worth starting this thread just for the humorous replies and anecdotes!

For clarity here's the thing I was looking at. For the price, I am tempted. I know one of my brothers would love one as a birthday present - he has a steampunk streak.

Neil

29/03/2023 12:07:34
Posted by Gerard O'Toole on 26/03/2023 16:06:25:

I bought a garden sundial about thirty years ago at a hardware store. It was clearly a modern reproduction but I thought it would be be a nice feature in the garden..

Some assembly was needed and it was unclear which way the gnomon attached. However it all went together and I waited until noon, local time, and set in the garden aligned to north to give 12 noon on the dial. I returned a couple of hours later to check it and found it was indicating ten o clock. It was working backwards.

Of course without thinking the matter out properly, I assumed the error was mine and that I had attached the gnomon upside down. Needless to say that didn't fix it. The problem, probably obvious to you all, was that it was made for the Southern hemisphere .and was then copied and then mass produced for a garden decoration.

I returned it to the hardware store. The manager told me they had sold about a hundred of them and that mine was the only one returned..

I still don't have one in my garden.

🤣🤣🤣

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