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MikeTrice

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  1. With the glue set it was now a question of carefully filling any gaps, rubbing down and priming. When daylight is back I will give them another rub down to remove odd little particles and respray. So here is the completed body as it stands and I am more than happy with it, a great improvement on the Bachmann original:
  2. As promised, prototype 3. There were a number of changes I intended to make to prototype 2 but forgot to do including adding the upper covers to the washout plugs on the firebox. This time, as Knuckles has commented, and as I had learnt for myself, I added ties between the boiler cut outs to stop warping as the resin cures: After printing prototype 2 I was unhappy with how flimsey the separate footplate was going to be so decided to combine the footplate parts with the boiler parts resulting in just two parts making up the model. To be honest I was worried about how I was going to be able to add the supports with the resulting structure. The model was once again orientated at 60 degrees to the build plate and supports added manually (and tediously) where I thought they need to go: I have overdone the ones along the footplate edge a bit but they are fairly easily removed. The prints before fully curing can be a bit on the soft side and it is quite easy to mark the printed surface: Once printed the parts are cleaned up. For the joint between the boiler halves the edge was rubbed on a sheet of 400 grade wet and dry: An oversight on my part I forgot that with the non-warping ties in place my O ring joiner would no longer fit: The O ring was cut down so it fitted and superglued to one half of the boiler: Once the superglue had set it was cleaned up: At this point I thought I had a good joint between the two halves however on fitting and superglueing the other boiler section found the fit not to be as good as I had hoped and requiring some filling:
  3. At the beginning of December 2019 I started a 3D model for a LNER V2 locomotive body. Why, I don't know, but I have always fancied trying a fully detailed body and had a couple of early generation Bachmann V2 that I could swap bodies with. Clearly the Photon would not be capable of reproducing the body in one piece so my concept was to produce both body and footplate separately in two pieces giving me 4 pieces in all. Impatience got the better of me and I ended up printing a first prototype thus: The two halves were joined using a moulded "O" ring and the prints done at 35 microns and a 30 degree angle. As can be seen here the layering was apparent: Somehow I managed to undersize the apperture for the motor and chassis and ended up carving excess material away until it fit. As an aside the Bachmann chassis is not very strong and I managed to break one of the valve gear mountings: In my haste I had also missed off some bits that I wanted to include so back to the drawing board (or more accurately Blender) and prototype 2 printed again following the same concept. This time I also got as far as printing the two parts of the footplate. For the body I decided not to print the boiler bands as they made cleaning up the joint in the body more difficult: The underside cutout was made wider this time however the body sheel tended to open up the cavity when curing which complicated joining the two boiler halves together: This time the model was printed again at 35microns but a 60 degree angle with anti-aliasing set to 4. I think the result is better but some of the detail might not be quite as sharp. A comparison of the 2 versions with version 2 on the top: Still not happy I then embarked on prototype 3 which I will cover in my next post.
  4. For some reason I started to get print failures with odd "flakes" appearing on the prints: To my knowledge I had not changed anything in the machine. Some research suggested it was one of two things: The LED screen developing a fault A bug in the firmware known as "Frame Shearing" Apparently there is a bug in earlier versions of the firmware which is fixed in version 4.2.18. Sure enough I was running firmware 4.2.17 so I took the opportunity to upgrade to 4.2.18 and "touch wood" the problem seems to have been solved. Incidentally there is a version 4.2.19 of the firmware out but that also has bugs so 4.2.18 it has to be.
  5. True. Happy for you to prove it is incorrect for the rest of class ;-)
  6. Did not plan to but anything is possible. As long as it does not involve me having to buy a Hornby A2/2.
  7. This is a bit of a strange post for me as it covers a number of topics already covered by other people. A number of things have occurred which have changed my whole philosophy on modelling. First off I retired early (something I have not regretted) and no longer have the same level of disposable income available. Before retiring I tended to buy virtually anything I wanted. Secondly I bought the Rails Dynamometer Car (the most expensive carriage I have ever purchased) and as has been reported elsewhere on RMWeb spent considerable effort to correct its many errors and livery. As a result of the above I decided to become as self sufficient as possible, that way it was my fault if something was not correct and it could be as detailed (or otherwise) as I liked. I purchased two pieces of equipment to help with that goal, a Silhoutte Cutter and an Anycubic Photon 3D printer. My experiences with both have been reported elsewhere on RMWeb so I will not go into them here. Both machines require digital artwork to make them work, something that does not particularly worry me and having retired I tend to have more time to do this sort of thing (Grandsons willing). I can therefore get away with only buying essentials that I cannot easily make myself. Last year I have little to show for my efforts, my time being consummed with other things. What has been done has tended to be in the form of computer artwork for the 3D Printer. My most complicated 3D model to date was printed for the first time yesterday and is very much a work in progress: Yes there is stepping/banding evident which I will come to later. If you havn't guessed the footplate will be a separate print. The Photon is not big enough to print the body in one piece so it breaks into two which were cleaned up and glued together: A couple of shots showing a comparison between my 3D print and a Bachmann body. I am really happy with the level of detail achieved: I was not looking forward to detailing the cab but the backhead came out all right in the end: Some banding is evident as seen here: Some will be quite easy to deal with, others perhaps less so. The prints shown here were printed at 0.035 depth and it is possible that another print at 0.02 depth will improve things. I also have the option of turning on anti-aliasing. Why bother with the new Bachmann V2 announced? Good question. Reasons have all been given by Tony and others before me: cost; satisfaction; self-sufficiency and most importantly I wanted to prove I could do it.
  8. I always use IPA and it has never failed me to date. Daft question, but are you using 100% strength or has it been watered down?
  9. Tony a question, if I may, that I don't think has been asked before. How do you organise your digital photographs for storage?
  10. It is now on my "get back to it one day" list. I don't recall major issues with the Isinglass drawings more likely a few omissions.
  11. Good question. I have been trying to remember who produced them but my memory is struggling. I have a vague feeling they were early P4 Studiolith. If that is the case they probably did not have heads as you were expected to drill them out and use their turned steel heads.
  12. It is just a LNER retractable buffer supplied in two parts.
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