Jump to content
TomE

3D Printing in 2mm Scale

Recommended Posts

 
5 hours ago, nick_bastable said:

all very nice when are you going to do a R1

 

excellent work btw

 

Nick

 

Thanks Nick. I guess that depends on which R1 you are referring to...  :lol:

Share this post


Link to post
Share on other sites
5 minutes ago, queensquare said:

 

Never come across these, what a handsome beast.

 

Jerry

 

They were Ivatt's original choice for the London suburban sets and 41 were built in total. Unfortunately they proved too heavy for the Metropolitan City Widened Lines, which gave birth to the N1 class. The class got moved out of London to work as goods locomotives and shunters. A small number later returned to London to work empty coaching stock but the whole class had been withdrawn by February 1934.

 

I've got a bit of a soft spot for this class but sadly last London based example was scrapped in 1931 (a year before the 1932-39 period I'm modelling). I might have to bend history a little bit and include one anyway... One day...

Share this post


Link to post
Share on other sites
5 minutes ago, Atso said:

 

They were Ivatt's original choice for the London suburban sets and 41 were built in total. Unfortunately they proved too heavy for the Metropolitan City Widened Lines, which gave birth to the N1 class. The class got moved out of London to work as goods locomotives and shunters. A small number later returned to London to work empty coaching stock but the whole class had been withdrawn by February 1934.

 

I've got a bit of a soft spot for this class but sadly last London based example was scrapped in 1931 (a year before the 1932-39 period I'm modelling). I might have to bend history a little bit and include one anyway... One day...

 

John Greenwood has long employed 'flexitime', and I've embraced it. Even Tony Wright has a Deltic on LB, the station was long closed by the time they arrived!

 

Jerry

  • Like 1

Share this post


Link to post
Share on other sites
On 11/09/2019 at 11:02, Atso said:

The first passes at the C12 and N1 came off the printer late last night. I've given them a clean in IPA, light boxed and removed the supports, but otherwise they are as they were printed.

 

https://www.rmweb.co.uk/community/uploads/monthly_2019_09/20190911_095003.jpg.9a6c2acea4775307f35c5b40a0482f91.jpg

 

https://www.rmweb.co.uk/community/uploads/monthly_2019_09/20190911_095056.jpg.6dfe45691d2d60501b7ea4f140c2c92b.jpg

 

I've done a bit of testing and found that the C12 body can be weighted to around 30g (plus whatever the weight of the chassis will be).

 

What resin and settings are you using for these? I'm lucky to get anything usable off the thing these days unless its something that can print flat to the bed like a bust or something! These are incredible with zero distortion.

Share this post


Link to post
Share on other sites
20 minutes ago, RBE said:

 

What resin and settings are you using for these? I'm lucky to get anything usable off the thing these days unless its something that can print flat to the bed like a bust or something! These are incredible with zero distortion.

 

The resin is Anycubic Grey, sliced at 20 microns, and the exposures are 50 seconds for the attachment layers and 8 seconds for the rest (around 8 hours to print the locos). I offset the model by 10 degrees in the X and Y planes and add a 0.4mm sacrificial skirt around the model and add some 0.4mm bulkheads to help support certain areas; normal printer supports are used to support the skirt and overhanging interior features. The skirt can be carefully removed with a few passes of a scalpel blade and carefully snapping it out. Any remaining bits of the skirt can be taken off using sanding sticks.

 

It takes a bit to trial and error, but it does help support the model during printing and reduce distortions.

 

We've also installed a small heater into the printer and upgraded the Z rail using the same kit Justin has.

Share this post


Link to post
Share on other sites
22 hours ago, queensquare said:

 

Never come across these, what a handsome beast.

 

Jerry

The late Bill Blackburn started making one of these 0-8-2s forty+ years ago in N gauge.  We could always do one in this livery:

DDEB081F-8734-488C-A749-CCAB10863B38.jpeg.36e16e533cb1ba3df2d0219e397c0a19.jpeg

It would look rather good storming up through Belle Isle!

 

Tim

Edited by CF MRC
  • Like 4
  • Agree 2

Share this post


Link to post
Share on other sites
23 hours ago, Atso said:

 

The resin is Anycubic Grey, sliced at 20 microns, and the exposures are 50 seconds for the attachment layers and 8 seconds for the rest (around 8 hours to print the locos). I offset the model by 10 degrees in the X and Y planes and add a 0.4mm sacrificial skirt around the model and add some 0.4mm bulkheads to help support certain areas; normal printer supports are used to support the skirt and overhanging interior features. The skirt can be carefully removed with a few passes of a scalpel blade and carefully snapping it out. Any remaining bits of the skirt can be taken off using sanding sticks.

 

It takes a bit to trial and error, but it does help support the model during printing and reduce distortions.

 

We've also installed a small heater into the printer and upgraded the Z rail using the same kit Justin has.

Thanks for that. Very informative. I have the same resin and have been using the same settings actually. I don't have the z kit but will have a bit more of a play. It tends to be the supports where I have trouble. Maybe I'm pushing it a little and not putting enough in. 

  • Like 1

Share this post


Link to post
Share on other sites

It looks to be in photographic grey so I wonder if it ever went into service looking like that. If it was just a works photograph why have they used it as a billboard even for GNR posters?

 

Regards Roger 

Share this post


Link to post
Share on other sites

Hi Guys,

 

Wow, this is some great work on this thread, I'm so impressed! But let's face it, all of TomE's and 'Atso's' work is amazing...HAHAHA!

 

I've just cancelled my pre order on a Prusa SL1 and instead bought an Elegoo Mars resin printer, arrives tomorrow :)

 

As I haven't started any 3D modelling and am keen to test the print quality, I was wondering if any of you guys would mine sharing a wagon model with me so I can test print it on the Mars tomorrow? I'm really looking forward to seeing what the printer can do in 2mm scale. Something like the GER open wagon or the wagon I see TomE printing?

 

As I'm modelling Sheffield Park on the bluebell, there are many loco's and wagons that would need scratch building/3D printing :)

 

Many thanks for any help you can offer, guys!

  • Thanks 1

Share this post


Link to post
Share on other sites

I am looking to purchase an STL file of a wagon so I can assess the capability of a 3D printer.

 

I have been keen to get into 3D printing for some little time.

 

It would seem that resin printers are the way to go but it would seem that there are some health risks with resin.  My only space is my layout room which is what one might call a standard ventilated room within the house.  I don't have a garage or shed. 

 

A friend of mine has a Cartesian style 3D Creality CR-10 which he says that he can obtain similar results to resin.  I would like to use his printer to see the results.

 

I have been doing battle with Fusion 360 but I am not anywhere near ready to produce my own wagon STL files.  Therefore, I would like to purchase an STL file of a wagon from someone so I can assess the capability of his printer.

 

Kind regards

 

Geoff

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.