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Post by masahiraoka on Aug 20, 2021 12:28:40 GMT
Ed
good question and one we've discussed many times.
the answer is it won't be cheap but i think it will be good value as the result should be a well designed loco that goes together quickly, works well and looks the part.
also i'm punting on the cost of technologies such as 3D printing in metal to come down in price quickly over the coming years.
in the end being able to build something of quality in a reasonable time frame will find a market - if it doesn't then c'est la vie as this is not meant in any way to be a commercially viable venture.
ciao Martyn
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Post by masahiraoka on Aug 30, 2021 3:12:41 GMT
Phil has made further progress on the tender   ciao Martyn |
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Post by masahiraoka on Sept 16, 2021 6:20:45 GMT
Nigel has now produced a very useful and attractive General Arrangement drawing from Phil's 3D CAD model. hopefully the drawing gives everyone a clear overview of the level of detail we're working towards. needless to say it looks complex but as we've previously described many 3D direct metal printed parts, 3D pattern printed castings and profile cut flat components should enable relatively efficient construction especially when compared with decifering the many mistakes of the Ariel design. feel free to download the drawing so you can examine close up - the resolution is much better that it first appears ciao Martyn  |
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Post by Doug on Sept 17, 2021 9:29:30 GMT
Love the work you guys are putting into this, Boscastle is really close to where I live and she is a lovely Loco will be great to see it back running again (hopefully with some smaller copies too) I wish I had some more spare time so I can get on with my 2.5” Sir Keith Park. But I still have my speedy to finish up. I have at least 18 years till retirement so might just get speedy done before then,,,, just.😂. Looking forward to release of your drawings. I will definitely be a customer for those even if they won’t be the size I need, they are of such quality that they will save me months of work and be an awesome reference for my project.
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Post by masahiraoka on Sept 17, 2021 22:01:27 GMT
Thanks Doug
I’ve no doubt that we’ll be able to scale the production of components to 2 1/2 inch gauge as the manufacturing techniques will be exactly the same as for 3 1/2 inch gauge. This won’t necessarily be the case for 7 1/4 or larger where different manufacturing techniques will almost certainly be more appropriate eg. fabrication of stretchers and brackets rather than 3D printing. I have friends who have a large 12 inch gauge railway so I’m trying to convince them to use the design to build a loco.
ciao Martyn
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Post by masahiraoka on Oct 11, 2021 2:52:58 GMT
and Phil has nearly finshed the tender chassis don't you just love the power of 3D CAD - you can slice and dice the model any way you want to see what's going on    |
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Post by masahiraoka on Oct 12, 2021 4:13:57 GMT
We've now received some further components from the 3D printer. some of these, including the smokebox saddle and bracing brackets behind the buffer beam, are replacing components that were made in the first instance with a tab a slot method but which proved to be too troublesome. this change of manufactuing strategy for components is precisely what we're seeking to resolve through the construction of the prototype   |
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Post by Cro on Oct 12, 2021 6:51:18 GMT
Martyn,
Out of interest, with just the bits shown above, what would be the retail price for someone wanting to build one of these?
Adam
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Post by masahiraoka on Oct 12, 2021 11:32:19 GMT
adam
i've emailed you ddirectly
ciao Martyn
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Post by masahiraoka on Dec 15, 2021 12:35:18 GMT
It's been too long since we've updated but work continues through Phil on the 3D design of the tender and Nigel on the 2D drawings. Andrew is busy on the completion of the streamlined Duchess so no real progress on the chassis. here is the latest 2D drawing from Nigel for the coupled wheels and assembly  |
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Post by masahiraoka on Dec 16, 2021 6:40:23 GMT
here are some shots of the 3D printed wax patterns ready to go of for casting - photos of the results coming soon SMokebox door  Inner cylinder valve sleeve liner  Outer cylinder valve sleeve liner  ciao Martyn |
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baldric
E-xcellent poster
Posts: 211
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Post by baldric on Dec 16, 2021 8:30:43 GMT
I am assuming that the white wax is support material, how does that get removed, especially from the inside of the steam pipes?
If I could get someone to print & cast like that locally it would be a game changer, but it would no doubt be more PC time and possibly not worth doing if the part is already available.
Baldric.
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Post by Cro on Dec 16, 2021 11:10:36 GMT
Baldric,
The white support material simple dissolves out in water. This is Mike's printer in New Zealand (I think) as I recognise some parts. He uses typically special metal foundries who do jewellery etc.. who are very good at what they do.
Adam
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Post by masahiraoka on Dec 16, 2021 19:49:41 GMT
yes Adam is correct these were 3D printed by Mike Jack and the white wax is low density disolvable support material that is obvioulsy removed before casting. here are the resulting castings  ciao Martyn |
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44767
Statesman
Posts: 538
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Post by 44767 on Dec 16, 2021 20:13:29 GMT
Baldric, The white support material simple dissolves out in water. This is Mike's printer in New Zealand (I think) as I recognise some parts. He uses typically special metal foundries who do jewellery etc.. who are very good at what they do. Adam This support wax, printed at the same time as the build wax, dissolves in isopropyl alcohol heated to 35°C. The process leaves the build wax completely untouched and the support wax stays in the alcohol until the alcohol is a saturated solution, at which time fresh alcohol needs to be used. |
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Post by masahiraoka on Dec 17, 2021 9:13:31 GMT
thanks Mike for the exact details of the support material and how it is removed meanwhile here are some further screen shots from Phil of the loco and tender which is progressing well    |
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Post by masahiraoka on Dec 19, 2021 0:19:09 GMT
Meanwhile Nigel, with the begining of his 2D frame plate drawing, has made more sense of the miriad of holes in the frames than I've ever seen before, clearly setting out which groups of holes belong to which stretcher etc etc.  ciao Martyn |
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Post by masahiraoka on Jan 8, 2022 5:19:23 GMT
To welcome the new year I thought I'd post something different. Below you'll find an excellent image of the rebuilt West Country, No. 34008 Padstow, painted by Richard Green as part of a map of the localities of all the West Country towns that the locos are named after. I never realised until now that one of the locos was named after the famous Eddystone lighthouse (of which there have been a number but Smeaton's, built in the mid eighteenth century being the most famous). For one thing Richard's map shows graphically just how many West Countries were built in comparison to all the other classes of British Pacifics. Richard has a superb range of prints available at www.locos-in-profile.co.ukciao Martyn  |
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Post by masahiraoka on Jan 15, 2022 3:57:33 GMT
And to complete the picture so to speak here is Richard's corresponding map for the Battle of Britain Pacifics  |
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Post by 92220 on Jan 15, 2022 10:25:10 GMT
Well done, and a real credit to Nigel, and everyone involved in this project. It is so nice to see PROPER engineering drawings of a model engineering subject. Unfortunately so many drawings are drawn by people with no drawing office experience, though this gives them a reasonable excuse. Where there is experience, it doesn't get used....and I am just as much to blame!! I was an engineering design draughtsman for many years, but I don't produce PROPER engineering drawings, these days, and I should. It doesn't take much more time, with CAD, and the drawings would be much easier to read!!
Bob.
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