Tuesday, April 12, 2016

More Brass Bits

Yesterday I finally managed to clear enough space (by temporarily dumping things elsewhere) to setup the lathe to turn a full set of spectacle plates. If you remember I ran out of brass after making one last time.

Armed with some new brass rod I set everything up and made a start on turning the 6mm rod down to 4.25mm for the outer diameter. My plan was to turn down quite a length of rod so that I could make four or more in sequence ensuring the outer diameter stayed the same. Initially I must have got the tool height wrong because as soon as I tried to take a small cut the tool dug in which tried to lift the front of the crossslide. While a little bit of pressure on the front of the crossslide stopped that happening the surface finish was terrible. So I stopped, made coffee, and then set everything up again. This time it was fine so I carried on.

The sequence was essentially to turn down the rod for the outer diameter, drill the central hole to 3.5mm (I would possibly have preferred this to be a little bigger but I was limited by drill sizes), face off and then turn down the end to 0.75mm to 4mm in diameter. This leaves me with a frame on the end of the bar which I then parted off. At that point I could just repeat the process from the facing off step to cut more frames.

I decided a photo of just four rings wouldn't be very interesting so instead we have a group shot of the main brass bits I've made for this model.


I actually made six parts, even though I only needed four. The first one I parted off badly which distorted it, and one pinged off never to be seen again during parting off leaving me the four I needed. This does mean that my success rate is climbing since I turned the buffers as two thirds of the parts were usable; it might even have been as high as 80% if I'd been able to find the one that got lost.

There will likely be a bit of a pause again as I'm getting ready for a work meeting next week that won't leave me much, if any, free time but then I have some annual leave so hopefully I'll be able to crack on with the final detailing and some painting...... although that would mean I need to settle on a colour scheme. I'm also not sure yet if I'll fit the window frames before painting, and then paint them brass coloured, or polish them up and fit them after painting. Anyone have any thoughts on which would look best? I'm thinking painting them might help me make them look worn and dirty as I don't want an ex-works condition loco.

Sunday, April 10, 2016

The Footplate

So far most of the work on making Skarloey look less like a cartoon character and more like the prototype it is based on, has revolved around detailing above and below the footplate. I have, however, been working for some time on the footplate itself. Specifically I've cut it into two pieces!

As you may remember, I've been working towards a model showing Talyllyn not as it is today but as it was in it's earlier pre-preservation life. So far that had meant moving the blower pipe to the drivers side, but I've now made a more drastic change by altering the footplate. Currently the locomotive has a footplate that runs along both sides of the boiler and encloses the tops of the wheels. Originally though there was no such footplate, with just a thin strip on the fireman’s side to give him somewhere to stand when topping up the water tank. To model this I've cut away the plastic footplate and added a thin metal strip which results in this.


It still needs some tidying up and a little filler in places but I think that looks fairly promising. You also notice that I've remove the box (I assume toolboxes although could be a sandbox I suppose) from the front right as again originally there was only one on the front left.

I think the main things left now are the remaining window frames and possibly a replacement chimney, but both require me fully reclaiming my desk again so I can get the lathe out. Hopefully that won't take too much longer.