Sunday, June 24, 2018

Wombat Models C30T Funnel and Steam Dome Replacements

I have added replacements for the Wombat Models C30T funnel and steam dome to my Signals Branch Shapeways shop.

The funnel and steam dome have been designed from NSWGR plans and are available as replacements for the three part funnel and the steam dome of the Wombat Models HO NSWGR C30T Class steam locomotive.

The funnel has the correct 8 bolts around the flange.

The funnel and steam dome have been produced in Smooth and Smoothest Fine Detail Plastic (SFDP - acrylic). The SFDP steam dome has been made hollow to allow rolled up lead sheet to be inserted for extra weight, it should be noted that the existing dome on the model has a small piece of brass inserted in it.

The funnel and steam dome have also been done in brass after a request from a modeller.

The brass steam dome is solid for extra weight and to minimise the weight of the brass funnel the hole goes right through.

Unfortunately the Wombat Models smokebox has a weight in it which is well forward of the front driving wheels which with the lever action produced will reduce the weight on the rear driving wheels, bad design. It may be possible to remove the weight but it is almost certainly held in by the same glue as the funnel and steam dome. Perhaps there is a 'solvent' that will dissolve the glue without impacting the plastic of the smokebox (brake fluid, citrus oil, eucalyptus oil, maybe?). If attempting this, do remove the small lighting printed circuit board and test a small drop of the 'solvent' somewhere out of sight, inside the boiler perhaps.

The funnel and steam dome have been designed to fit in the same slight recesses and holes in the boiler and smokebox.

The Wombat Models funnel and steam dome have been glued in place with a slightly flexible glue that doesn't attack the plastic of the locomotive. They can be removed by pulling and working it back and forth carefully using your fingers.

Clean the glue fully from the recesses and continually trial fit to ensure that the original glue is all gone or the funnel and steam dome will not sit correctly.


Wednesday, May 23, 2018

A Bit of a Catch Up - Some Actual Modelling!

I have been a bit busy of late so here is a few things I have been working on.

Firstly I have completed the Laser Rail Bits timber trestle bridge and fitted it with my 3D printed 1 1/2 inch square nut/bolts with 3 inch square washers and the bridge came out very nice. I followed the instructions and stained the timber with a Raven Oil and methylated spirits mixture. I did find that I had to make the mixture a bit stronger than in the instructions though, possibly more dense timber. I also noticed that the line drawing of a trestle in the instructions seemed to be incorrect in regard to how the diagonal timbers would go onto the piles. I will contact Rod Kelly of Laser Rail Bits about this.

As Rod had already laser marked the square nut/bolt/washers on the timber so it was an easy task to drill a 0.6 mm hole and insert the 3D printed ones.

Laser Rail Bits timber trestle bridge with 3D printed nut/bolt/washers
Close up of nut/bolt/washers on trestle bridge
Next, I have been back working on the Werris Creek station building for Ron Cunningham. The downpipes on the North West platform side of the building had me bluffed as sometimes can happen with a model. I was put off by the complicated way that that pairs of the downpipes came down from the 'scuppers' joined together then went through a water filter, emerged from the water filter then went down through the platform awning. The water filters are Rail Central parts available from Casula Hobbies. Anyway, as can happen, once I started it only took about three hours to cut the 1 mm Evergreen plastic rod and fabricate them.





Signals Branch 3D printed 48 inch single flourescent light as on the prototype

Tamworth platform side

North West platform side showing upper floor awning against the western sun.
One aspect of the awnings is that all the nice window, door and downpipe detail is virtually hidden! Oh well.

I still have a few more things to add to the building but these will be done once the handling of the building is basically over to prevent damage. There are two flag poles coming out at a 45 degree angle from the upper floor on the Tamworth side, some double flourescent lights projecting out in several places as well as a couple of 'stink pipes' that come above the top of the building.

The next thing to do is to work on the brick platform faces, these will be made from Slaters brick sheets and it will be next to impossible to connect them without a join showing.

Items still to be done will be station signs, the signal box, small cast iron signs for Station Master, Men, Ladies, etc. and the surface of the platform.

The last thing I have done recently was to present at the Modelling the Railways of NSW 35 where I gave a talk on practical information on 3D printing. The talk seemed to go over well and I had about 60 attendees over three sessions. A good day in all.

Here is a sneaky photo taken by Zane Maber.


That's about it although I have been doing a lot of stuffing about with my two 3D printers as well.

FDM 3D printed mounting for three PMG key switches for Bylong signalling
DLP 3D printed Cheap Signal Box - Learning about support placement
Til next time then......

Wednesday, May 16, 2018

Shapeways Makes Changes to Material Names and Drops Other materials

Well, Shapeways have done it again!

They have today renamed a number of their materials, no doubt for marketing reasons or trying to make it simpler for new customers.

Anyway, for the the main materials I use on my Signals Branch shop White Strong and Flexible is now called White Versatile Plastic and Fine Ultra Detail is now called Smooth Fine Detail Plastic.

The various web pages have been modified as well and some things have moved.

Also they have dropped a number of materials from the available line, none that worry me but I am sure there will be an outcry from those who use them in their shops. 

I will have to go through the text descriptions of some of my models and change any references to the old material names.

What a pain!

Here is the announcement from Shapeways from their Forum:

We are so excited to announce the release of updates to our materials portfolio. Available, starting today are:
  • Silver: Antique Finish
    • A unique finish that gives a rugged personality to your pieces
  • Full Color Sandstone: Matte Finish
    • A smooth and matte finish for even bolder colors
  • Steel: Matte Bronzed-Steel Finish
    • A subtly rustic finish for industrial chic pieces
  • Professional Plastic (previously known as HP Nylon Plastic) is available to sell in your Shapeways shops
To make for a simpler, more user-friendly creation process, we have also updated our Materials Hub. Along with lovely new end-product photography, we have now broken our materials in to benefit driven categories which will help guide you to the right materials for your projects. The new categories are:
  • Strength & Value
  • Professional Finishes
  • Industrial Strength
  • Scale Replicas
We’ve done some renaming of our materials, more details on that can be found here in our updated Materials Naming Guide. We’ve also begun updating our Model Upload and Checkout flow to make it easier to pick your materials and finishes.

You may also notice some changes to the material offerings; as part of this refresh process, we decided to say goodbye to some of our less popular materials including:

  • High Definition Acrylate (instead try our Black HP Nylon plastic or Frosted Ultra Detail Plastic)
  • Acrylic Plastic (instead try our Frosted Ultra Detail plastic)
  • PLA (instead try our Strong & Flexible plastic)
  • Metallic Plastic (instead try our Gray HP Nylon plastic)
  • Elasto Plastic (instead try our Strong & Flexible plastic)
  • Castable Wax
  • Matte Gold Steel (instead try our Polished Gold Steel)
  • Matte Bronze Steel (instead try out Polished Bronze Steel)
  • Porcelain
If you have purchased or sold any these materials in the last 6 months, you should have been notified via e-mail. If you have any of these materials enabled in your shop, your products will no longer be offered for sale in these materials. If your product was only enabled in one of these materials, it will now be listed as public, but not for sale.

Shapeways is ever-evolving, and we will continue to focus on providing the right material solutions for your projects.

We can’t wait to see what you create with this updated experience!


Wednesday, April 25, 2018

My 3D Printing Talk at the Modelling the Railways of NSW Convention 35

As you may know already I will be giving a talk on practical information for 3D printing at the Modelling the Railways of NSW Convention 35 at Loftus on 19 May 2018.

I will be passing on the knowledge and experiences that I have gained over the last four years playing around with 3D printing. Firstly with Shapeways and more recently with the two different style 3D printers that I bought.

I hope to give those who are interested enough information to get them started in this fascinating aspect of our hobby.

Be aware though that it can be very absorbing and another hobby in itself. I have probably put hundreds and hundreds of hours into the drawing side and the printing side is certainly not the fastest thing going.

The successful setup of a 3D printer can be a bit demanding but when you get a good print it is a great feeling, particularly when you have had the idea and drawn the item up.

A recent item I printed came about when I had the idea to draw up some one and a half inch nuts/bolts with three inch square washers for the Laser Rail Bits NSWGR Timber Trestle Bridge kit I was building. Within about 2 hours I had drawn the nut/bolt/washer, copied 272 of them, attached them to a sprue arrangement,, saved the model to the STL file format and printed them on my ANYCUBIC Photon DLP printer. Now that was fun!

I have yet to install these on the trestle bridge as that other thing called real life keeps intruding.



I also did some hex nut/bolts with 3 inch round washers, just because I could.


I have added both of the nut bolt washer types to my Signals Branch Shop.

HO 1.5 inch square nut-bolt and 3 inch square washers

HO 1.5 hex inch nut-bolt and 3 inch round washers

Here are some other things I have printed on the Photon printer.

HO 3D printed cows - 3D model from the internet - Showing
some support marks I didn't clean properly
HO 3D printed water tank - Support marks not cleaned off yet

HO Werris Creek station building window - Dots are support marks on back of window

Saturday, March 3, 2018

Replacement Funnel for the New Austrains NSWGR C30 Tank Locomotive

The Austrains NSWGR C30 tank locomotive was released this morning at the Forrestville NSW exhibition and a very nice model it is, heavy and pulls well. The models released this morning were the 'no light' version. The versions with lights are to follow soon.

I have just put a C30 funnel replacement for the just released Austrains C30 on my Signals Branch shop.

Available in either Frosted Ultra Detail or Frosted Extreme Detail.

This 3D printed funnel has no die join line and has the eight bolts around the flange to the boiler. It was designed to fit using an Austrains C30 engineering sample smoke box.
3D design render
Take care when fitting to ensure that the flange is sitting straight and is settled into the recess in the smokebox as the Austrains C30 smokebox has a hole for a simple centre pin. Basically there isn't any sort of keying apart from the pin and the recess. This 3D printed funnel has the pin and will fit into the recess. The 'thick' flange edge is to allow 0.5 mm to sit in the recess with 0.2 mm showing.

The funnel was designed from a NSWGR plan.

Wednesday, January 24, 2018

A Mystery Gift

Several weeks ago Chris and I came home to find a package at our front door. As neither of us had recently ordered anything online we were puzzled. The package was addressed to me and didn't have a sender address, very odd!

When the package was opened there was a black Trainbuilders box inside, even more strange. Opening the box I found a brass round water tank and a plaster round brick stand, now this had a few questions running through my mind. What was a VR water tower doing being delivered to me? Who sent it? Why was it sent to me? Is this for a AMRM review?

Further examination of the box revealed an unsigned letter and a USB thumb drive. The letter said that the sender had noticed that my Bylong station yard didn't have any steam watering facilities and that this water tower would fit the bill. The letter also explained that the brass round water tank was from a Trainbuilder model of a VR round water tank that looked very similar to a style that had been built in NSW in the period 1892-93. A master of the brick tower base had been built in polystyrene from plans and information in the Australian Journal of Railway Modelling issue 9 and Byways of Steam issue 2. Also included on the USB drive were ten photos by Graeme Henderson of the water tower at Meranburn.

Intriguing, OK so who sent me this?

Examination of the packaging showed that it was post marked Glen Innes NSW. Right, that narrowed it down. At this point Christine said, "It must be from Rohan".

As some of you who follow the Bolivia blog would have worked out by now it was from Rohan Fergusson.

See Rohan's recent blog post here.

I contacted Rohan and he owned up and said that had purposely not signed the latter, wishing to remain anonymous. I thanked him of course and we had a discussion about the various styles of round water tanks with brick bases that were built as the rail network stretched out across the state and how he painted the brickwork and cast iron water tank (see Rohan's blog post).

Now another part of the discussion was that Rohan had inadvertently thrown the back story of my layout back about 20 years to 1892-93. About 1910-11 there was a push by locals to get a railway line but this didn't eventuate until the early 1980's when White Industries was given the contract to build the line from Sandy Hollow to Gulgong to extract coal from a mine at Ulan. I had decided in about 1978 that I would build a layout based on the non-fact that the line had been built after successful lobbying by the locals. This was the basis for the one station Bylong layout that was exhibited by the South Coast Shunters and Muddlers, a small group consisting of Peter Malone (my brother-in-law now into hot rods), Terry Flynn, Paul Morecom, Christine and myself. Christine suggested that we exhibit the layout and we successfully exhibited at several exhibitions winning a number of trophies, AMRA NSW 1979 Most Popular layout, AMRA NSW 1980 Most Popular layout, AMRA NSW 1980 Best Layout and another from a North Shore exhibition (Epping Club I think) in about 1980 that later fell and broke so I removed the etched award plate that I now can't find (must look for it, it will still be around). This group was the nucleus of a group that grew as meetings were held at my place until the early 1990's when it moved to Ron Cunningham's place and became the Ramblers.

Anyway back to our discussion,as we talked I realised that I had thrown the timeline back even further as I had introduced a riveted cast iron water tank to my Bylong layout in 2015. This water tank is at Cassilis and it was based on a plan I have dated 1885, so I had actually tripped myself up!

Here are photos of the Cassilis water tank and one of a possible placement for Rohan's brick round water tank at Bylong.

3D printed riveted cast iron water tank on timber stand at Cassilis
This is an early 4 part pilot model - now printed in one piece but requires a floor

Rohan's gift, a type 1 round cast iron water tank on a brick stand
The above 3D printed riveted cast iron water tank is available in WSF or FUD on my Signals Branch Shapeways shop here.

Now I will have to add water columns and perhaps an ash pit or two, oh well, I will put it on 'the list'.