Latest developments

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ge_rik
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Re: Latest developments

Post by ge_rik » Fri Jul 01, 2022 10:17 pm

Just putting the finishing touches to the latest to roll out of the he PLR workshops. I've rescaled the 0-16.5 GVT Glyn to 15mm. A bit more titivating before she's ready for the paintshop and awaiting delivery of some li-ions, but I'm quite pleased with how she's turned out.
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Re: Latest developments

Post by Jbs » Sat Jul 02, 2022 9:34 am

I like the look of the GVT tram loco Rik. What resolution did you use? I have used 0.1mm layer with good results, but I have seen a video on Youtube which suggested that due to the rule of 2 (related to the angle of the turn of the stepper motors I believe) that 0.12 layer gives a better result. I'm not sure if this relates only to cura slicer. I'm new to 3D printing, so still learning.
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Peter Butler
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Re: Latest developments

Post by Peter Butler » Sat Jul 02, 2022 10:44 am

It is a magnificent loco, but those lines would keep me awake all night! Without the rivet detail there should be a way of smoothing the surface.
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Re: Latest developments

Post by Jimmyb » Sat Jul 02, 2022 12:00 pm

Peter Butler wrote:
Sat Jul 02, 2022 10:44 am
It is a magnificent loco, but those lines would keep me awake all night! Without the rivet detail there should be a way of smoothing the surface.
When these are painted up most of the line seem to disappear, however Peter I do agree with you, and it is what has put me off a 3D printer, I am not sure I would be happy with the results, for external (to model) parts.

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Re: Latest developments

Post by philipy » Sat Jul 02, 2022 12:56 pm

It is a superb looking model with obviously some impressive drawing, but like the others have said, as it stands the sideways smears off the rivet heads would annoy me too. Having said that, (a) Jimmy is correct that paint can lose much of that, plus (b) I have found myself that the photography/lighting can make it look a lot worse than it is.

At a practical level, I don't know how Rik has designed the 'kit', but I think I would have been tempted to make the tank sides, back and front as separate sheets, printed flat and subsequently glued together, which would have largely solved that problem.

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Re: Latest developments

Post by ge_rik » Sun Jul 03, 2022 5:03 pm

Hi chaps
Thanks for the feedback.

Regarding the resolution - I think it is 0.12. I'm away from home at the moment (visiting a couple of ng railways in Lincolnshire) so can't check but I used the default which Cura provided for my printer and filament (both Eryone).

Yes, this was a bit of an experiment. Normally, I would print slab sides like this flat but it worked out ok to print them vertically in 7mm scale so I thought I'd give it a try in 15mm. But, as you say, the ripples produced from the rivets is a right PITA.

I've got a couple of options - I'll try smoothing the sides with the rivet detail intact. However, if that doesn't work I'll file them off and replace them with nail art gems.

For info, the loco body took 21.5 hours to print, by far my largest single print

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Re: Latest developments

Post by Jbs » Mon Jul 04, 2022 8:51 am

Thank you Rik. I also have printed most of my parts on the flat, although I have tried a couple of vertical prints but without rivet detail.
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Re: Latest developments

Post by Tropic Blunder » Mon Jul 04, 2022 9:43 pm

The latest way ive managed to get around the stirations (ridges) is to give it a good sand with 120 and 240 grit then lie it on its side and give it half a dozen coats of the tamiya painter filler in the cans and sand flat. you can get quite an achievable finish. at the end of the day 3d printing isnt really any less work then scratch building it just changes the nature of the work involved :twisted:

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Re: Latest developments

Post by ge_rik » Mon Jul 18, 2022 10:23 pm

It's taken a while, but the loco is now more or less finished. A bit more detailing and she'll need a bit more weight. I think I may have to raise her up from the track by a few mm - although the height of the skirt above the rail is prototypical, my track isn't. I'm really pleased with the Micron MR603 receiver. Very fine control , maybe even more so than its Deltang predecessor. I've made a video which I'll post in due course.
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Re: Latest developments

Post by Peter Butler » Mon Jul 18, 2022 10:38 pm

Lovely job Rik... nice finish too!
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Re: Latest developments

Post by ge_rik » Mon Jul 18, 2022 11:01 pm

Tropic Blunder wrote:
Mon Jul 04, 2022 9:43 pm
...... at the end of the day 3d printing isnt really any less work then scratch building it just changes the nature of the work involved :twisted:
Yes, I have to agree. My wargaming mate popped round at the weekend and I showed him my 3D printing set-up. He asked if I was worried about losing my scratch bash bodgelling skills and, after a few seconds reflection, I told him I was more than delighted, if not excited, by the new skill set I was developing. I don't think I'm abandoning my old skills (such as they are), I'm augmenting them.

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Re: Latest developments

Post by philipy » Tue Jul 19, 2022 6:50 am

Superb Rik, really lovely.
Those layer lines seem to have really disappeared, was that just hard work with wet 'n dry?

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Re: Latest developments

Post by ge_rik » Tue Jul 19, 2022 8:51 am

philipy wrote:
Tue Jul 19, 2022 6:50 am
Those layer lines seem to have really disappeared, was that just hard work with wet 'n dry?
A combination of filler and several coats of primer with wet n dry between.

Lesson learned! Avoid printing sides vertically but if it's unavoidable then do not add rivet detail. Close scrutiny will reveal that there are still some strata lines between and beside rivet rows where I struggled to get the abrasives in.

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Re: Latest developments

Post by ge_rik » Tue Jul 19, 2022 5:06 pm

Here she is in action with Micron MR608 receiver installed


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Re: Latest developments

Post by philipy » Tue Jul 19, 2022 5:41 pm

Running nicely Rik. Doesn't it make a welcome change to have that much spare space inside for all the gubbins?!

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