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Author Topic: My new locomotive works...  (Read 13022 times)

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Offline R Marshall

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Re: My new locomotive works...
« Reply #270 on: October 11, 2017, 03:45:46 pm »
I'd love to see some of these locomotives in the flesh (or 3D, or whatever).

That K3 looks great in grey, never mind when it's finished. And as for the V1/V3.............

How hard is the material you're using these days?

Regards,

Roy
« Last Edit: October 11, 2017, 03:47:29 pm by R Marshall »

Offline paulprice

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Online Atso

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Offline paulprice

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Re: My new locomotive works...
« Reply #275 on: October 11, 2017, 04:16:45 pm »
Just to prove that things have still been going on on the workbench...



It is difficult to see with that gloss finish but all the hand lining is complete, boiler bands, lettering and numbers will be completed using transfers now. Then it is handrails (shudders), buffers and final detailing to complete.

Online Atso

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Re: My new locomotive works...
« Reply #276 on: October 11, 2017, 04:31:04 pm »
I'd love to see some of these locomotives in the flesh (or 3D, or whatever).

That K3 looks great in grey, never mind when it's finished. And as for the V1/V3.............

How hard is the material you're using these days?

Regards,

Roy

Hi Roy,

Sorry I missed this originally, many thanks for your kind words.

The N2 and V1 are Shapeways Frosted Extreme Detail which is reasonably hard but a little brittle. The K3 is printed on my machine in resin which can be post cured using UV light to a range of hardnesses depending how long you wish to expose the piece for. I like to keep a little flex in the print as I'm found taking it to an ultra hard state results in easy breakages and would say that it is comparable to a plastic injection moulded body but at the point where you would see plastic start to stress from bending, the resin will simply snap.

Hope this helps.

Online Dr Al

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Re: My new locomotive works...
« Reply #277 on: October 11, 2017, 06:05:34 pm »
The N2 and V1 are Shapeways Frosted Extreme Detail which is reasonably hard but a little brittle. The K3 is printed on my machine in resin which can be post cured using UV light to a range of hardnesses depending how long you wish to expose the piece for.

That's interesting. Does that mean there is a real risk of increasing brittleness in time as exposed to natural UV? I guess painted that should be minimised, but good to not leave in direct sunlight?

Cheers,
Alan
Quote from: Roy L S
If Dr Al is online he may be able to provide a more comprehensive answer.

Online Atso

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Re: My new locomotive works...
« Reply #278 on: October 11, 2017, 06:27:50 pm »
That's interesting. Does that mean there is a real risk of increasing brittleness in time as exposed to natural UV? I guess painted that should be minimised, but good to not leave in direct sunlight?

Cheers,
Alan

Hi Alan,

FUD/FXD and the resins used in SLA printers are all UV reactant and would continue to harden if exposed to a high intensity UV source without protection. Painted they should be as good as any other resin or thermoplastic in terms of lifespan but, like these other materials, will likely become more brittle as time goes on. My oldest FUD print must now be getting on for seven years old (if not more) and has so far exhibited no deterioration in it's condition while my oldest B9 print must be three years old now and again has shown no signs of deterioration. Both currently reside on a display shelf that is exposed to direct sunlight for several hours per day.

In a nutshell, painted you should be as safe as any other material.

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Re: My new locomotive works...
« Reply #279 on: October 13, 2017, 04:57:57 pm »
A bit of an update on two of the locomotives...





Nearly finish cosmetically with a few extra details and weathering to still be done. The V1 is lagging behind a bit still.

Both the N2 and V1 still need to have their pickups sorted on the rear radial wheel...

Online Train Waiting

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Re: My new locomotive works...
« Reply #280 on: October 13, 2017, 06:53:57 pm »
Thank you very much for these photographs of splendid-looking locomotives.

The little Stirling/Ivatt cab certainly accentuates the K3's massive boiler.

With all best wishes.

John

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Re: My new locomotive works...
« Reply #281 on: October 13, 2017, 09:44:07 pm »
Marvellous modelling, Steve :drool:

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Re: My new locomotive works...
« Reply #282 on: October 14, 2017, 07:09:40 pm »
Marvellous modelling, Steve :drool:

Thank you very much for these photographs of splendid-looking locomotives.

The little Stirling/Ivatt cab certainly accentuates the K3's massive boiler.

With all best wishes.

John

Thank you guys.

I agree with you John that the GNR cab does emphasise the 6' boiler more than the later 'standard' cab did. It is interesting to compare the differences between the K3/1 and K3/3 and I had a couple of people asking if it was a K2 because of the cab at Wing today!

 

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