Post by Philipy on Nov 16, 2020 6:36:11 GMT
Trevor Thompson
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Re: 3 D Printing 16mm models
Post by Trevor Thompson » Thu, 12 Nov 2020 6:30 pm
Tropic Blunder wrote: ↑
Wed, 11 Nov 2020 10:56 pm
That van looks the bees knees Rik very clean printing on the planks with little stiration im very impressed. Trevor your buildings fantastic! what temp are you printing that ABS at?
I am printing it with the extruder at 225 degrees, and the bed at 100 degrees. That is dependent on the source of the filament. I was having problems printing the previous reel of white ABS with the extruder at 235 degrees.
I also think Riks van looks very crisply printed - is that the new printer Rik?
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Re: 3 D Printing 16mm models
Post by ge_rik » Thu, 12 Nov 2020 6:41 pm
Trevor Thompson wrote: ↑
Thu, 12 Nov 2020 6:30 pm
...... - is that the new printer Rik?
Hi Trevor
Yes. The body was done on the new printer and the chassis on the old one. I'm trying something called 'ironing' in Cura which is supposed to give a smooth final layer. The van was done before I started playing with ironing. I'm not sure I've got the settings right for ironing as the finish is sometimes worse than without it.
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Re: 3 D Printing 16mm models
Post by philipy » Fri, 13 Nov 2020 7:01 am
ge_rik wrote: ↑
Thu, 12 Nov 2020 6:41 pm
I'm trying something called 'ironing' in Cura which is supposed to give a smooth final layer. The van was done before I started playing with ironing. I'm not sure I've got the settings right for ironing as the finish is sometimes worse than without it.
I always leave 'ironing' on and I think it does give a better finish where there are largish flat top surfaces, but if the top is a small area it doesn't seem to be noticeable. It doesn't do anything for angles or vertical surfaces, or for intermediate flat areas. I've been playing with an open wagon body recently but even with ironing on, the wagon floor is still showing print striations.
As I'm sure you know, it works by running a second pass over the final layer with the nozzle heat on but no filament being ejected. This just lightly re-fuses the final layer and evens out the striations. I think it works best with an increased number of top layers and/or higher infill %. If the number of layers is low then some of the heat of that ironing pass gets to heat up the trapped air inside and with the surface hot, 'pillowing' occurs.
Philip
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Re: 3 D Printing 16mm models
Post by Trevor Thompson » Fri, 13 Nov 2020 8:45 pm
I am making good progress with the station building. The roof panels are printing well so far. The triangular profile of the lower edge of the slates is (as far as I can tell from photos) pretty close to the shape of the original slates.
So three views of the roof so far:
IMG_1062.jpg
IMG_1063.jpg
IMG_1064.jpg
There will be ridge tiles to go over the ridges of the roof - so I am ignoring the slight gaps along the ridge.
I am particularly pleased with the roof on the porch.
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Re: 3 D Printing 16mm models
Post by philipy » Sun, 15 Nov 2020 3:28 pm
An FR-ish Tipper because I drew it up from photos not actual drawings and I know some bits aren't quite right.
However, first the kit of 3D printed parts:
DSC_0001[1].jpg
The real thing:
0848-04-01-11-2.jpg
DSC_0005.jpg
1602785021580blob.jpg
DSC_0003.jpg
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Re: 3 D Printing 16mm models
Post by Trevor Thompson » Sun, 15 Nov 2020 3:36 pm
That is VERY nice!
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Re: 3 D Printing 16mm models
Post by philipy » Sun, 15 Nov 2020 4:35 pm
Cheers Trevor.
I'm not very happy with the body, tbh. I tried to be too clever by slowing down the print speed AND increasing the minimum layer time, and ended up making the striation effect worse! Still I know what to do ( NOT to do) next time.
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Re: 3 D Printing 16mm models
Post by Trevor Thompson » Sun, 15 Nov 2020 6:16 pm
The station roof is still printing.
Another 6 panels printed and the second roof glued into position:
IMG_1070.jpg
I have also started to add the stonework details to the chimney using a Bromley Crafts mylar template and wall tile adhesive. I have added black acrylic paint to the adhesive to make ir a dark gray:
IMG_1069.jpg
And the last roof is printing out - in 4 sections.
I am starting to think about ridge tiles and window frames.
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Re: 3 D Printing 16mm models
Post by ge_rik » Sun, 15 Nov 2020 6:57 pm
philipy wrote: ↑
Sun, 15 Nov 2020 3:28 pm
An FR-ish Tipper because I drew it up from photos not actual drawings and I know some bits aren't quite right.
However, first the kit of 3D printed parts
Well that looks pretty darned good to me...... 😊👍
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Re: 3 D Printing 16mm models
Post by ge_rik » Sun, 15 Nov 2020 6:59 pm
Trevor Thompson wrote: ↑
Sun, 15 Nov 2020 6:16 pm
The station roof is still printing.
Another 6 panels printed and the second roof glued into position:
I have also started to add the stonework details to the chimney using a Bromley Crafts mylar template and wall tile adhesive. I have added black acrylic paint to the adhesive to make ir a dark gray:
And the last roof is printing out - in 4 sections.
I am starting to think about ridge tiles and window frames.
Those roof tiles look the biz! This is the sort of thing that 3D printers do well, which would be tricky to do otherwise
Rik
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Re: 3 D Printing 16mm models
Post by Andrew » Sun, 15 Nov 2020 9:38 pm
There's some very impressive work going on here. Love the chimney stack and accurately-shaped tiles on the station building, and the tipper really captures the (pleasingly quirky) look of the real thing.
Nice that they're on the same thread too - the tippers are currently at Beamish, I believe, but I wonder how many times they'd have trundled past that station building "back in the day"?
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