RMweb Premium Physicsman Posted March 26, 2021 Author RMweb Premium Share Posted March 26, 2021 1 hour ago, Mrkirtley800 said: That viaduct is stunning Jef, just imagine a Midland 4-4-0 with a train of clerestory carriages on it. Superb. Derek Thanks Derek. Really good to hear from you. And, as I'm speaking to a very long-term EM convert, I apologise for being unable to oblige with anything steam-based. At the moment, anyway. Best wishes to Olga. Jeff 1 Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 26, 2021 Author RMweb Premium Share Posted March 26, 2021 1 hour ago, jacko said: Ah focus! Up till recently that's been the bane of my life but I fitted a Celestron motor focusser a couple of months ago which is as smooth as satin so there's no wobble when focussing AND a couple of weeks ago I finally bought a bahtinov mask so I can now get stars pin sharp. Of course, as I'm using an SNT reflector there's always a chance of the mirror slipping Graeme I fitted a Baader diamond steeltrack focusser on the SCT a couple of years ago, and the fine focus control is very good. I have considered fitting a Baader motor focusser, but I'm not convinced it's worth the cost. Visual judgement of the region of focus is still difficult with the poor seeing. We can all aspire to Damian Peach standards, but we don't all have the opportunity to image in grade 1 seeing. I don't think I've ever seen a clear, symmetric Airy diffraction disc on a defocussed star - other than in a Physics lab. As with the viaduct, I suppose we have to do the best with what we've got and it's the challenge that is fun. You should (NOT) see my first imaging efforts from 2015. I think it would be boring if we could all produce perfect results, instantly... Jeff 1 Link to post Share on other sites More sharing options...
jacko Posted March 26, 2021 Share Posted March 26, 2021 1 hour ago, jacko said: Of course, as I'm using an SNT reflector there's always a chance of the mirror slipping Graeme I did of course mean SCT. doh!. Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 26, 2021 Author RMweb Premium Share Posted March 26, 2021 The backscene has been given a priming coat of paint and immediately brightens up the scene. The viaduct has now been fixed in position and a link inserted at the north end. The track still needs cutting to length and joining-up. It's almost time to start playing with the insulation board! Jeff 15 Link to post Share on other sites More sharing options...
RMweb Gold Rowsley17D Posted March 26, 2021 RMweb Gold Share Posted March 26, 2021 That board does look better now. If only you could get @Andrew P up to Cumbria to do you one of his famous landscapes. If you sent him the dimensions I'm sure he could rustle something up on the back of a roll of wallpaper! 1 Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 26, 2021 Author RMweb Premium Share Posted March 26, 2021 11 minutes ago, Rowsley17D said: That board does look better now. If only you could get @Andrew P up to Cumbria to do you one of his famous landscapes. If you sent him the dimensions I'm sure he could rustle something up on the back of a roll of wallpaper! Yes, his backscenes are very good. I intend to cover most of the area with a blue-ish sky (yes, I know the weather is often cr@p on the S&C, but if I want a blizzard scenario I'll just turn the lights off!!) with some white clouds (I'll get my sponge out). The area directly behind the viaduct, visible through the arches, will be painted onto a separate piece of 4mm ply and slipped into place. J. 2 1 Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 27, 2021 Author RMweb Premium Share Posted March 27, 2021 The viaduct has started to disappear into the "landscape".... I cut a piece of 6mm ply as a guide former, showing the way the land rises between piers 4 and 10. This was screwed into the side of the viaduct and also serves to minimise plaster ingress onto the stones once I get to that bit. Then it's just been a couple of hours of messy fun with the insulation board. The yellow tubs at the end of the viaduct are there to weigh down the track - which has now been fixed to the pre-laid track and PVA'd in place. I've just taken delivery of 36 rolls of mod-roc, so I'll be enjoying myself with that, probably tomorrow. Jeff 17 2 Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 27, 2021 Author RMweb Premium Share Posted March 27, 2021 Oh dear, bit between my teeth now, and some of you might remember how much I love mucking around with mod-roc. So I've just put 4 rolls of the stuff onto the insulation board base. I'm not being a stickler to my original contour plan, but what's on so far is a fair representation of the valley side at the north west end of the viaduct. If I get the chance I'll try and post the contour plan on here again, as it has salient points on it - such as path locations. Here's another mini-batch of pics. J. 15 3 Link to post Share on other sites More sharing options...
RMweb Gold MarshLane Posted March 27, 2021 RMweb Gold Share Posted March 27, 2021 Jeff, Serious question, as I am about the same place to using mod-roc on the scenery for Rock Creek, when I get chance to get back to some modelling ... where you've laid the mod-roc over the edge of the insulation board, aren't the edges giving a bit of a tight angle, or will that soften and mould away as you continue? First time using mod-roc for me, so I am interested in what and how your doing things.... Rich Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 27, 2021 Author RMweb Premium Share Posted March 27, 2021 (edited) 36 minutes ago, MarshLane said: Jeff, Serious question, as I am about the same place to using mod-roc on the scenery for Rock Creek, when I get chance to get back to some modelling ... where you've laid the mod-roc over the edge of the insulation board, aren't the edges giving a bit of a tight angle, or will that soften and mould away as you continue? First time using mod-roc for me, so I am interested in what and how your doing things.... Rich Rich, if I understand the query... A coating of plaster is put on top of the mod-roc to produce additional strength, but mainly to allow proper contouring of the surface. My track record on KL1 and 2 had plaster thicknesses of up to 3-4 cm, which is ridiculous. I'll keep it to about a cm on here. Now, does that help or did I misinterpret the question? Jeff Edited March 27, 2021 by Physicsman Put not bl**dy out you silly spellchecker!!!!!!!!!!!!!!!!!!!! 2 1 Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 28, 2021 Author RMweb Premium Share Posted March 28, 2021 Rich, have a look at the last Kirkby Luneside thread: Page 80, as an example, shows moc-roc going onto an embankment. Page 85 shows the mod-roc on the Fell getting its plaster coating. I would recommend cheap plaster, as sold in DIY stores. I did use about 20kg of Plaster of Paris - sets rock hard in less than 5 minutes and scares the sh1t out of any drills you wish to use....so tough. Avoid PofP, unless a free load falls off the back of a lorry and into your model room!! HTH. Jeff 2 1 1 1 Link to post Share on other sites More sharing options...
RMweb Gold MarshLane Posted March 28, 2021 RMweb Gold Share Posted March 28, 2021 1 hour ago, Physicsman said: Rich, if I understand the query... A coating of plaster is put on top of the mod-roc to produce additional strength, but mainly to allow proper contouring of the surface. My track record on KL1 and 2 had plaster thicknesses of up to 3-4 cm, which is ridiculous. I'll keep it to about a cm on here. Now, does that help or did I misinterpret the question? Jeff Thanks Jeff, I was thinking more of whether the sharp corners/edges that are visible in the mod-roc in the picture would look realistic when finished. But your comment of multiple layers/extras thickness explains how those contours get softened and natural looking, thanks. Rich ps Don’t forget the clocks go on tonight! Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 28, 2021 Author RMweb Premium Share Posted March 28, 2021 First batch of pics. A guide former added to the south end of the west side of the viaduct, as per the northern one, yesterday. (Pics 1 and 2) The contour map, based on the prototype. The figures quoted are in centimetres above floor level. The diagram was drawn before I built the L-frames, and assumed a trackbed at 105cm. In the event, I've used 110cm, so 5 should be added to each number on the plan. I'm not following this slavishly, though the positions of Gill, paths, walls etc will be adhered to. (Pic 3) Insulation board cut and fitted in between piers, along with continued work on the valley. (Pics 4 and 5) Jeff More shortly 12 Link to post Share on other sites More sharing options...
RMweb Premium Popular Post Physicsman Posted March 28, 2021 Author RMweb Premium Popular Post Share Posted March 28, 2021 Pics showing the south end of the valley built-up... 19 1 Link to post Share on other sites More sharing options...
RMweb Premium Popular Post Physicsman Posted March 28, 2021 Author RMweb Premium Popular Post Share Posted March 28, 2021 I've just come across the photo, below, which I hadn't seen before. This is the kind of thing I'm aiming for, even though I AM short of 3 arches! One of today's, previously posted above, for comparison. Jeff 19 3 Link to post Share on other sites More sharing options...
RMweb Gold teaky Posted March 28, 2021 RMweb Gold Share Posted March 28, 2021 Brilliant, Jeff. Even with the scenery still white, the viaduct is already looking good. The assorted, subtle colours are starting to show. 3 1 Link to post Share on other sites More sharing options...
jacko Posted March 29, 2021 Share Posted March 29, 2021 The last time I was walking in this area it was under 6 inches of snow and the sky was leaden so that last picture is incredibly realistic to me Graeme 1 1 Link to post Share on other sites More sharing options...
RMweb Gold Rowsley17D Posted March 29, 2021 RMweb Gold Share Posted March 29, 2021 You're going to have to raise the garage roof if you want photos like that! 1 1 Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 29, 2021 Author RMweb Premium Share Posted March 29, 2021 2 hours ago, jacko said: The last time I was walking in this area it was under 6 inches of snow and the sky was leaden so that last picture is incredibly realistic to me Graeme There have been suggestions on previous layouts that I dispense with the grass and go for a snow effect. As you say, could be realistic! 1 hour ago, Rowsley17D said: You're going to have to raise the garage roof if you want photos like that! I'm working on it..... .... If only. Imagine Fell Mark 3 behind the viaduct.... Jeff 2 2 Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 29, 2021 Author RMweb Premium Share Posted March 29, 2021 Here are a few more pics. I've nearly used-up my latest supply of insulation board, but most of the south end of the viaduct - both east and west sides - now have a mostly-completed hill-base. 12 rolls of mod-roc, so far. Jeff 11 4 Link to post Share on other sites More sharing options...
Andrew P Posted March 29, 2021 Share Posted March 29, 2021 Should have kept the Double Garage, and then doubled it AGAIN. Impressed of Amp Sher. 1 2 Link to post Share on other sites More sharing options...
RMweb Premium Physicsman Posted March 29, 2021 Author RMweb Premium Share Posted March 29, 2021 7 minutes ago, Andrew P said: Should have kept the Double Garage, and then doubled it AGAIN. Impressed of Amp Sher. DON'T put ideas into my head. Lord knows what I'd do if I won a substantial sum of money on the lottery.....buy another house and use most of downstairs for a layout? Oh, that would give me chance to build TWO full-scale viaducts! Ummmm...... J..... Concerned of Cumbria 2 Link to post Share on other sites More sharing options...
Andrew P Posted March 29, 2021 Share Posted March 29, 2021 22 minutes ago, Physicsman said: DON'T put ideas into my head. Lord knows what I'd do if I won a substantial sum of money on the lottery.....buy another house and use most of downstairs for a layout? Oh, that would give me chance to build TWO full-scale viaducts! Ummmm...... J..... Concerned of Cumbria Large Garden, O Gauge, Scale Viaduct, Scale Fell, Scale Luneside, Scale ASYLEM 1 Link to post Share on other sites More sharing options...
lambiedg Posted March 29, 2021 Share Posted March 29, 2021 1 hour ago, Physicsman said: DON'T put ideas into my head. Lord knows what I'd do if I won a substantial sum of money on the lottery.....buy another house and use most of downstairs for a layout? Oh, that would give me chance to build TWO full-scale viaducts! Ummmm...... J..... Concerned of Cumbria I refer you to my post of last Friday morning. David Link to post Share on other sites More sharing options...
RMweb Gold PeterBB Posted March 29, 2021 RMweb Gold Share Posted March 29, 2021 2 hours ago, Andrew P said: Large Garden, O Gauge, Scale Viaduct, Scale Fell, Scale Luneside, Scale ASYLEM Scale 12" to the Foot! 1 Link to post Share on other sites More sharing options...
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