RMweb Gold Steve Hewitt Posted December 6, 2013 RMweb Gold Share Posted December 6, 2013 Wait 'til you see what he was drawing.......... Steve. Link to post Share on other sites More sharing options...
Les Green Posted December 9, 2013 Author Share Posted December 9, 2013 Wait 'til you see what he was drawing.......... Steve. 1 Link to post Share on other sites More sharing options...
RMweb Gold Steve Hewitt Posted December 9, 2013 RMweb Gold Share Posted December 9, 2013 Ground signal.jpg WOW!!! Steve. Link to post Share on other sites More sharing options...
Michael Woolford Posted December 9, 2013 Share Posted December 9, 2013 Les, I'm guessing that these are going to be made using 3d printing for the ground signals that are required for the rest of the layout? If so then I presume that they will be non-functional? Michael Link to post Share on other sites More sharing options...
Les Green Posted December 10, 2013 Author Share Posted December 10, 2013 Les, I'm guessing that these are going to be made using 3d printing for the ground signals that are required for the rest of the layout? If so then I presume that they will be non-functional? Michael We don't do 'non-functional'! 4 Link to post Share on other sites More sharing options...
iak Posted December 10, 2013 Share Posted December 10, 2013 STREWTH!!! This whole Lime Street project just gets more inspirationally challanging and stimulating as it goes on. Sirs, I salute you!!! :clapping: :clapping: Link to post Share on other sites More sharing options...
Les Green Posted December 10, 2013 Author Share Posted December 10, 2013 Les, I'm guessing that these are going to be made using 3d printing for the ground signals that are required for the rest of the layout? If so then I presume that they will be non-functional? Michael Yup, definitely functional! 6 Link to post Share on other sites More sharing options...
Michael Woolford Posted December 10, 2013 Share Posted December 10, 2013 Fantastic! If only someone did something like this that could be available to the public... Michael Link to post Share on other sites More sharing options...
RMweb Premium Sasquatch Posted December 10, 2013 RMweb Premium Share Posted December 10, 2013 The sheer scale of this project makes me giddy. Your attention to detail is breath taking gentlemen. Link to post Share on other sites More sharing options...
RMweb Gold Steve Hewitt Posted December 11, 2013 RMweb Gold Share Posted December 11, 2013 (edited) Ground signal2.jpg Yup, definitely functional! The main body of the signal will be 3D printed in a "plastic" material, similar the Buffers. The holes for the Pivots are "printed in" as is the hole for the fibre optic. This latter is curved within the lamp body part of the signal, so that the fibre exits at an angle and avoids interfering with the Back Blinder. He has used his 3D CAD system to "trial fit" all the assembled components to ensure it should work when it is actually made! i.e. There is room for the balance arm to move sufficiently to move the Signal Arm properly etc. Les will then be etching the mechanical parts - Arm, Back Blinder, Balance Arm, and Weight. The pivots will be 0.45mm Lace pins, cut to size. I'm really looking forward to this new way of making signals! Steve. edited for spelling. Edited December 12, 2013 by SteveAtBax 2 Link to post Share on other sites More sharing options...
RMweb Premium newbryford Posted December 11, 2013 RMweb Premium Share Posted December 11, 2013 And if I heard correctly the other night, they're only 9mm high....... (Steve has a very good magnifying glass...................) Cheers, Mick Link to post Share on other sites More sharing options...
modfather Posted December 11, 2013 Share Posted December 11, 2013 Out of interest, what spec mac? I'm toying with turbo cad for mine but don't know if it'll cope. Link to post Share on other sites More sharing options...
Les Green Posted December 12, 2013 Author Share Posted December 12, 2013 Out of interest, what spec mac? I'm toying with turbo cad for mine but don't know if it'll cope. I am using a Macbook Pro. I used to use TurboCad in the dim and distant past. To print a 3D model you need to be able to export a 3D drawing to a .stl file. (STereoLithography). That is the easiest way. I think there are various conversion programs about to convert to other formats but I am not up to speed with any of them. I have heard of people using Google Sketch Up for 3D modelling and getting 3D printing done. Again don't know how. Link to post Share on other sites More sharing options...
modfather Posted December 12, 2013 Share Posted December 12, 2013 thanks very much - I'm using a newer macbook pro, guess I'll have to suck it and see Link to post Share on other sites More sharing options...
RMweb Gold Steve Hewitt Posted December 17, 2013 RMweb Gold Share Posted December 17, 2013 Progress on Les's Buffer Stops........ Earlier postings from Les showed the 3D Printed buffer stops. He has now completed the assembly and basic painting of all 16. On Tuesday evening he gave me one at our club meeting to fit the Lighting for the Stop lamp. Here is the result, so far.......... P1000623.JPG This is the design with rounded beam ends, and extra horizontal beam for strength. P1000629.JPG Here the lamp is lit. P1000625.JPG The light is from an LED mounted underneath, routed up to the lamp via an optical fibre. P1000630.JPG This is the turning which will help anchor the assembly and carries the LED and filters. P1000631.JPG Here the LED is temporarily in place. When the other fifteen have been completed, they will all go off to Rob for weathering before installing on the layout. Steve. A little more progress: We've decided to use red LEDs rather than the "Gaslight" LEDs from Helmsman which required red filters. Makes the job simpler I've turned the brass plugs which will hold the LEDs and fitted each LED with a 1k Ohm resistor. The positive leads have also been insulated with heat shrink sleeving. When the Optical Fibre is fitted, about 3mm protrudes below the Buffer's base. This is threaded into the brass turning, where it lines up with the LED which is secured with a little superglue. The brass turning will locate the assemly in the baseboard: and the necessary 12volt feed will be connected: I'll get some pictures when the weathering and installation has been completed. Steve. 11 Link to post Share on other sites More sharing options...
Les Green Posted December 17, 2013 Author Share Posted December 17, 2013 The 'big boy' users of 3D printing refer to the process as 'additive layer manufacturing'! Does that mean that conventional old fashioned milling now becomes 'subtractive layer manufacturing' and chemical etching becomes 'advanced subtractive layer manufacturing'!!! 3 Link to post Share on other sites More sharing options...
RMweb Gold Popular Post Steve Hewitt Posted December 18, 2013 RMweb Gold Popular Post Share Posted December 18, 2013 Buffer installation has started..... Brian has made a little jig which gets the positioning of the buffer correct: A pilot hole is drilled first: Then the 8mm hole which will accomodate the brass boss - i.e. 10mm deep. Ready for planting: Ballasting, weathering etc to follow: Looks OK? That's not an LMS number Steve. 21 Link to post Share on other sites More sharing options...
Les Green Posted December 19, 2013 Author Share Posted December 19, 2013 I thought the buffers were going to be fitted further back and buried into the platform edges. Link to post Share on other sites More sharing options...
RMweb Premium newbryford Posted December 19, 2013 RMweb Premium Share Posted December 19, 2013 I thought the buffers were going to be fitted further back and buried into the platform edges. They will be - after you've driven a couple of trains into them..................................... Cheers, Mick Link to post Share on other sites More sharing options...
LMS2968 Posted December 19, 2013 Share Posted December 19, 2013 They will be - after you've driven a couple of trains into them..................................... Cheers, Mick That happened a few times too! Link to post Share on other sites More sharing options...
RMweb Gold Steve Hewitt Posted December 19, 2013 RMweb Gold Share Posted December 19, 2013 I thought the buffers were going to be fitted further back and buried into the platform edges. Les, I've checked with John, and its all to do with clearance after un-coupling. If space is at a premium, the buffers will be "buried". Steve. Link to post Share on other sites More sharing options...
Michael Delamar Posted December 19, 2013 Share Posted December 19, 2013 That happened a few times too! 1 Link to post Share on other sites More sharing options...
LMS2968 Posted December 20, 2013 Share Posted December 20, 2013 I worked at Edge Hill in 1973 with the guard who caused all that. Funnily enough, his version of what happened differed slightly from that given in the report... http://www.railwaysarchive.co.uk/documents/MoT_LimeStreet1949.pdf 1 Link to post Share on other sites More sharing options...
RMweb Gold Steve Hewitt Posted December 21, 2013 RMweb Gold Share Posted December 21, 2013 I worked at Edge Hill in 1973 with the guard who caused all that. Funnily enough, his version of what happened differed slightly from that given in the report... http://www.railwaysarchive.co.uk/documents/MoT_LimeStreet1949.pdf They really knew how to deal with incidents in 1949. The accident destroyed the buffers, the booking office beyond, the engine, several coaches, and punched a hole in the Hotel wall, some 60 feet beyond the buffers. The police and ambulances arrived 4 minutes after the accident. Station working was re-arranged and there were only slight delays to trains. The damaged stock was removed by 7.0 p.m. on the same day and necessary repairs to the permanent way and concourse were completed by 11.35 pm. on the following day, when normal working was resumed. How long for such an incident to be dealt with today? Steve. Link to post Share on other sites More sharing options...
Michael Delamar Posted December 21, 2013 Share Posted December 21, 2013 the report didnt take long to write and print either, 19th November to 10th Februrary. Link to post Share on other sites More sharing options...
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