What have you been printing.

DGE-Railroad

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26 Jan 2020
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Todays little cache of bits is a little varied :)

A boiler, a water tank and some track tests for the steam shovel
A test print of a G1 Maunsell wheel
A test print of a roof roof truss for the coaches Ive been messing about with
20210112_120519.jpg
On the subject of coaches, I've also tried thickening and separating the sides of the GWR sections in order to try printing them flat and reduce the print time by about 80%!

20210112_121250.jpg

The plan is to try attaching the sides to a frame for the second coach and to see how that compares to printing the entire body shell
 
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DGE-Railroad

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The roof formers seem an excellent idea

Cheers Paul.

I've revised them now with notches at 9, 12 and 3 o'clock to take 2mm square styrene stringers to run the length of the roof.

The plan is to form some plasticard by clamping it to a former and bathing it in boiling water for a few minutes to get the shape, then to transfer it to the coach and glue it to the trusses and stringers. Fingers crossed it won't go horribly wrong :D

I've had some success with forming styrene curves like this before, when I used the method to make an air tank. The knack seems to be accounting for the spring-back when you release it, so it needs to be over-curved during the bending process
 

Rhinochugger

Retired Oik
27 Oct 2009
29,171
3,504
North West Norfolk
Todays little cache of bits is a little varied :)

A boiler, a water tank and some track tests for the steam shovel
A test print of a G1 Maunsell wheel
A test print of a roof roof truss for the coaches Ive been messing about with
View attachment 278813
On the subject of coaches, I've also tried thickening and separating the sides of the GWR sections in order to try printing them flat and reduce the print time by about 80%!

View attachment 278814

The plan is to try attaching the sides to a frame for the second coach and to see how that compares to printing the entire body shell
But are they really flat? What about the tumblehome?

I think only the Cornish Riveira coaches were flat sided in GWR coach terms. While on the Southern, Maunsell coaches were flatish, the only truly flat ones were the Hastings gauge stock. Even the 4-wheelers of most companies had an element of curvature ............

.................. I think :nerd::nerd:
 

DGE-Railroad

Registered
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But are they really flat? What about the tumblehome?

I think only the Cornish Riveira coaches were flat sided in GWR coach terms. While on the Southern, Maunsell coaches were flatish, the only truly flat ones were the Hastings gauge stock. Even the 4-wheelers of most companies had an element of curvature ............

.................. I think :nerd::nerd:
I'll bow to your knowledge Rhino...mine isn't that great :D

The GWR coach file I'm basing it on seems to gave been simplified somewhat and I've gone with it :)

Iteration 3 though, which is still in software does indeed have a proper tumblehome and looks a bit more authentic because of it
 

Rhinochugger

Retired Oik
27 Oct 2009
29,171
3,504
North West Norfolk
I'll bow to your knowledge Rhino...mine isn't that great :D

The GWR coach file I'm basing it on seems to gave been simplified somewhat and I've gone with it :)

Iteration 3 though, which is still in software does indeed have a proper tumblehome and looks a bit more authentic because of it
Mine isn't that fantastic either. The thing is that there are some things that get you looking, and then you look a bit more. Living on the SR, the Hastings stock always fascinated me, but it took a while to realise why they looked so different. Then, if you ever get the chance to look at a Bulleid pacific that's not pulling Pullman carriages, you can see where Bulleid designed the curved side of the tender to match the tumblehome of the coaching stock.

It's little things like this that fascinate me ........... and bore other people :devil: :devil:
 
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3 minutes of fame

3d printing, electronics and trams
14 Dec 2020
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Lincolnshire
www.mgnr.uk
Fresh off the printer, some commonly available 009 shells that I will be modifying to provide a little more detail and some couplers for them as well. Probably the smallest thing I've ever printed and time will tell if they will be strong enough...

20210112_223211.jpg
20210112_223108.jpg
 
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mike

Master at annoying..
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24 Oct 2009
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Working steady here , producing crates, barrels ect for the warf side.. warmer inside than the workshop/shed .. 20210112_101538.jpg
 
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dunnyrail

DOGS, Garden Railways, Steam Trains, Jive Dancing,
25 Oct 2009
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St.Neots Cambridgeshire UK

3 minutes of fame

3d printing, electronics and trams
14 Dec 2020
81
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Lincolnshire
www.mgnr.uk
Wish me luck, I've just sent this to print... It's a G-Scale Hunslet with tramway sides - mainly to hide the basic chassis. Printed without a floor so that I can adjust the chassis fitment and then fit some plasticard.

1610542219113.png

It looked OK in 009..

1610542348263.png
 
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JimmyB

Semi-Retired; more time for trains.
Wish me luck, I've just sent this to print... It's a G-Scale Hunslet with tramway sides - mainly to hide the basic chassis. Printed without a floor so that I can adjust the chassis fitment and then fit some plasticard.

It looked OK in 009..
So what is the benefit of printing at an angle, just layman terms please :)
 

3 minutes of fame

3d printing, electronics and trams
14 Dec 2020
81
36
Lincolnshire
www.mgnr.uk
So what is the benefit of printing at an angle, just layman terms please :)
Mainly to prevent large flat surfaces from being printed in one go, as this is likely to lead to failures. You get both significant suction forces from the print window and any large changes in material exposure can cause issues as well - but this is more with older laser printers rather than LCD. Don't forget these printers print from the bottom up.

It also helps to let any unused resin drain from the print as well.
 

PhilP

G Scale, 7/8th's, Electronics
5 Jun 2013
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So... .. .. ..........

You print from the bottom, up?
Even though it is from the top, down?
And, you do it at 45 degrees?

o_Oo_Oo_O

Are you sure you have not been reading the rules of Cricket?
 

3 minutes of fame

3d printing, electronics and trams
14 Dec 2020
81
36
Lincolnshire
www.mgnr.uk
So... .. .. ..........

You print from the bottom, up?
Even though it is from the top, down?
And, you do it at 45 degrees?

o_Oo_Oo_O

Are you sure you have not been reading the rules of Cricket?
Having worked in theatre, for me left is right, right is left, up is back, in is down, out is up and killing the workers is quite acceptable...
 
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LGB-Sid

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Meet PETG / Resin man, not the best name for a super Hero :)

Head are arms in resin for details, Body chopped in half so you can print it with a filament printer laid flat with no supports , plus if I cut up enough heads, arms, etc. then I can end up with individual people rather than a lot of clones.. :think:

petg man.jpg
 
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LGB-Sid

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