-missy-

5 minutes ago, Artless Bodger said:

Here's a daft suggestion. Some nuclear waste generates a lot of heat and has to be stored in cooled tanks and as I understand it the cooling water also acts as a moderator. Could some form of boiler be designed that used nuclear waste pellets (that already exist) as heat source, with suitable protection. The pellets to be installed in cartridges that can be removed to secure safe storage when not required to generate steam? 

Hmmm.

Nuclear waste generally doesn't produce much heat if at all. The water in the ponds is there to act as a shield for the radiation being emitted. Its why the Cherenkov effect exists.

Missy.   

1 hour ago, Chris Higgs said:

 

Oh, and don't forget there are people out there doing etching artwork using  non-CAD packages such as Corel or Adobe Illustrator.

 

Chris

Which both export in .dwg and .dxf format unless I am mistaken?

Julia.

1 hour ago, Chris Higgs said:

So I don't agree with you. dxf is only in theory a common format. Not at the same level as stl.

 

Chris

Thank you Chris.

I must remember to tell this to the other engineers I work with then, when I am back from the Easter hols!

Julia 😛

6 hours ago, Chris Higgs said:

Artwork really isn't that easy to exchange. There is no standard format like there is with 3D-printing. I once included a simple item from David Eveleigh on one of my sheets and even though we had used exactly the same set of layers in our CAD (because it was David who had taught me how to do artwork in the first place) I ended up redrawing parts of it. If you have used a different CAD package you will find it very hard to mix and match.

Chris

 

Hi.

Sorry Chris but that is technically not the case. For 2D the common filetype is .dxf, for 3D its .step.

Julia.

I think it needs something like this...

Hi Nick.

Things like that are just screaming to be 3D printed. Are there any drawings available?

Julia

14 hours ago, queensquare said:

During yesterday’s ZAG meeting I wired a chip into the M and gave her a test run live on Zoom - brave or foolish, I'm not sure which! Thankfully she ran very well so she is now sat on Bath shed awaiting weathering along with some of my other Midland 0-6-0s.

 

Jerry

 

Im really impressed on how the midland achieved such a rectilinear polygon out of their coal stocks.

M.

Hi.

If you were closer, I would readily bite your arm off with an offer like that. Finding access to larger machines is not far off impossible these days. Evening classes don't seem to exist anymore.

Missy.

On 28/08/2021 at 13:05, technohand said:

Hi Missy

The boats are likely to be diesel powered and for inshore operation. They could be crabbers so a winch on the side and a shelf near to rest pots on when emptying. A bucket full of fish for rebaiting the pots and a few spare pots, probably rectangular at the period modelled. The boats could also be used for long lining, so buckets of baited lines, a small winch and lots of ice in a big insulated box near the deck hatch.

Hoes this helps

Tony

Hi Tony.

Thank you very much, that is really useful information. Until I work out what exactly the boats are I think I will keep them deliberately vague for now.

Missy.

9 hours ago, Compound2632 said:

 

I built a Parkside 4 mm scale kit of one of these and thought it was small...

 

How do you get enough weight in it to keep it on the rails?

Hi Stephen.

I have added lead weight between the etched chassis and printed body. Hopefully there is enough in there to keep it on the track.

Julia.

1 hour ago, Sam Kennion said:

Please could you share details of the prototypes Julia?

Also how did you make the axles and what dimensions are they please?

 

Sam

Hi Sam.

The axles were a special commission from the same supplier the 2mmSA get theirs from. They are 6.65mm long 1mm diameter. The wagon is a L&B 4 ton covered goods wagon.

Julia.

Hi.

I would have thought they would be simple to make. A bit of brass rod for the post and some plasticard for the head.

Or am I over simplifying it?

Julia.

Having a break from the couplings. Playing around making some 2.5mm diameter wheels for my NG stuff instead.

Julia.

Hello.

So Mk1, 2mm scale NG coupling hasn't really worked.

The main problem is I assembled the body of the coupling before adding the loop wire, as a result I had to open out the pivot holes a little too much to allow the wire with the bends through the holes making the loop wire a bit too loose when in position. I also had to increase the size of the catch wire to 0.4mm as the 0.3mm wire was a little too floppy and tended to fall either sides of the catch support bit. In principle it should work but it needs a different approach.

A huge thanks to Roger for the original design for this.

Any thoughts?

Julia.

Teeny tiny van...

Julia.

1 hour ago, Caley Jim said:

Just because it has a Penzance registration doesn't mean to say it has to be in a western fishing port. Fishing boats moved with the fish shoals. We were in Eyemouth a week ago and there was a boat with a Stornoway and another with a Lerwick registrations there. 

 

Jim 

I went for Penzance as I thought it would pretty much cover 'the west', both top and bottom bits.

J.

1 hour ago, CF MRC said:

So you're making a model of a western fishing port?

 

Tim

Probably? I don't know. I am going to say yes.

Julia.

26 minutes ago, chrisveitch said:

Can anyone suggest a good source of thin (i.e. sub-1mm) double-sided PCB please?

 

The standard stuff seems to be 1.6mm (too thick, and I've got loads of it anyway...) and RS Components do a number in 0.8mm which would be good, but is this the thinnest available?

Eileens do some (or they did) I have got some down to 0.3mm

Julia :)

Just now, tomparryharry said:

 A house fly takes off backwards. That is, to enable flight, the fly jumps up, with a bias to the rear. This is only momentary, as once the wings can generate force, it's away...I always aim to hit the fly on its backside. As the fly jumps up, its body meets the downward force of the flyswat coming down.  Not every time, but a good 80% success. 

Hi.

I was thinking more about how relative time was....

Quote

Have a look at a clock with a ticking hand. As a human, you see the clock ticking at a particular speed. But for a turtle it would appear to be ticking at twice that speed. For most fly species, each tick would drag by about four times more slowly. In effect, the speed of time differs depending on your species.

Now if you could adjust that to suit....

Missy.

16 minutes ago, Nick C said:

 

Whoever made that one up presumably doesn't actually know much about flight - 2000mph is roughly the speed of an SR-71 Blackbird, to even get into space you need to be going much faster than that, with average orbital speed being around 17,000mph and Earth's escape velocity being roughly 25,000mph. If you wanted to actually travel interstellar, you'd need another couple of  orders of magnitude on top of that - the distance to the nearest star is about 4.37 light years, or 25 trillion miles - that's 4 and a half years at 670,616,629 mph. 

 

Hi.

That is of course, if whatever they are conforms to our space/time convention. As Einstein suggested, it may be possible to distort space/time to make long distance space travel possible.

A classic example is the the average house fly. Ever wondered why its extremely hard to 'swat' one? Think of a fly as a mini ufo......

Missy.

21 hours ago, Ian Morgan said:

 

 

I have some of this. If it looks OK, PM your snail mail address and I can pop some in an envelope for you. Probably enough for a few dozen pots that size.

 

Thank you Ian, that is very kind but I think I have a solution. Out of interest, what is it?

Julia.

4 hours ago, Alex Duckworth said:

 

Possibly a winch, anchors, coils of rope & fenders (old car tyres). Super little boats, Julia. Are they for a layout, perchance?

 

Alex.

Thank you Alex. I can neither agree or disagree with your comment about a layout.

4 hours ago, mike morley said:

radar and radio ariels on the wheelhouse roof.  Navigation lights.

Not sure about the navigation lights Mike. I think the rest might be a little too modern for what I am aiming for though.

3 hours ago, Caley Jim said:

This might give you some idea of the clutter on a fishing boat.   

 

More images of NE Scotland fishing boats here.

 

Jim

Thank you Jim. There are some interesting and potentially useful pictures within that link you posted.

3 hours ago, martin_wynne said:

 

Water?

 

Ha!

2 hours ago, nick_bastable said:

perhaps a Funnel 

 

 

Nick B

Thanks Nick. I think the boats are a bit too small for a full on steam plant with funnel.

Could be wrong though.

Julia