Highland Railway 7 ton timber wagon - Type L

Not sure whether this sholud be in a new thread.

This is my second HR wagon, the 8 ton Type A. 329 of these wagons were built in five batches.
The model is based on the Drawing by K. Norris (Gauge O Guild drawing number 3809 - same sheet as the 7 ton timber wagon).
I've tried to be a little more savvy on this wagon, as there is a very similar wagon with a side door, so hopefully most of the work has been done on this wagon, and I can modify it as required.
Again the number plate has been used as a derrived part (as was done with the Timber wagon), with the number changed to something appropriate.

Test print is on the go, so fingers crossed there is a completed print waiting for me when I get up in the morning

Paul

 

Turned out ok

Bit of cleaning up to do, well you wouldn't want a perfect print as that would be boring

Next up a new set of W irons, leaf springs, brake assembly, pivot block & brake lever. Some of the wagons show the Drummond patent brake levers fitted - more research needed.

Paul

 

Neeps and Tatties, just the wagon for carrying them.

Bit further research (I overlaid the two sets of drawings and there nothing alike )

Bit more work on the Type A

New springs - the ones on the Timber wagon were a bit naff
New Brake gear - this more of a standard for this period of wagons.
New W iron





The J hanger, Buffers and axle boxes are the same as the timber wagon (I hope).

Time to sort some test prints of the parts - maybe tomorrow tho'

Paul

 

Nuts, I really like the craftsman resin and the prints it gives, I still have 3 more bottles of Apricot and 4 bottles of beige remaining. My preffered colour is grey, but all I could get was Apricot and Beige. Not a great lover of the Eco resins, I did notice they have a range of water washable resins, not part of the Eco range.

The site just says out of stock, so fingers crossed they may reappear.

Paul

 

Wow almost 2 and a half months since any progress was reported

Being doing some jobs for the local model railway club in preparation for thier first show in three years and helping my young lad on his campervan conversion..

The show is this weekend, fingers crossed the re-wire holds out for the weekend, where DMRC's new layout Lochee makes its deput. A late 50's BR era model of the station.

So anyone in the Dundee area this weekend, pop in.

Back to the thread .......

One of the prototypes made up - I had to joey the W irons and springs, a test print has been done with a thicker sole bar, just need to do this test build.

Pics to be loaded in a few mins - forgot to upload them before starting the post definately out of practice

Also started my first Van build, which is not too much of a priority for Highland modellers is they didn't have many of em. The Jones Diagram 4 (Type Q) 8ft wide body external frame, based on the Peter Tatlow drawing from his Highland Railway Carriage and Wagons book.



The more observant may have spotted a 7' 7" body entry in the Bodies section, well seemingly there was a 7'7" wide body version, aparently only the body width was different.

So here is me thinking this should be fairly quick build, then I noticed the wheels are 3'8" diameter rather than the normal 3'1" - nuts yet another W iron design, and the spring assembly is Jones's own design





Test print setup and just need to wait for 3 hours (ish) for the first print to complete.

As a test I'm trying to print direct to the print bed for the body and floor (copied Mossy's method for the cattle wagon).
So to try and reduce the elephants foot that form on the base layers I've applied a fillet to the bottom edges.



Just need to wait ........

Paul

 

and the pics

Coat of W5 floor sealer applied ready for the transfers.

Paul

 

Mossy - notice the van body and floor - no supports at all

It's printed without comming off, but - and it's a BIG BUT - I was lucky, I noticed a hairline of a gap between the two headstocks and the build plate, looking at the project file it was easy to see the culprit - viewed from the underside - green is in contact with the build plate. One of the buffer sockets is slightly misshapen, but nothing that cannot be fixed with a reamer.



The headstocks are slightly smaller than the solebars so were not in contact with the build plate, luckily there was enough meat on the rest to hold it. Easy enough to fix, I just extrude all the basees to the same height.

The floor is perfectly flat - well as flat as the build plate

I've placed the floor at the top third of the body, to help retain it's shape during the cure / drying out process.

The next pic shows the slightly deformed buffer socket

I'm impressed with the lack of visible layer lines

The roof was supported, and I will see if leaving the supports in place for the first cure will help retain it's shape.

Back to the drawing board to fix the issue - change the running number and create another .stl file.

Now to print the W irons and leaf springs



Paul

 

Fixed

Extruding wasn't quite doing it, so I went for the sledge hammer method

I created a 5mm thick slab on the bottom face of the headstock, then moved it up by 0.1 mm and then used it to cut 0.1mm from the bottom of the model



It worked



Time for be I think - printer still has an hour to go

Paul

 

Thanks Gormo

Hi Pete

Appears to be - I thought I'd bought a bottle a lot of years ago - finally found it so gave it a go.

It worked well on some nameplates created for Dundee MRC, but have yet to try applying transfers over it - results will appear here soon (I hope).

Paul

 

Back to the test prints

Closer look at the body and the elephants foot can be seen

On the printer used for these prints I have 5 base layers of 20 seconds, and these are damned difficult to remove.

So for test 1 I'm leaving the exposure setting at 20s but reducing the number of layers to 3.



Just need to wait 3 hours 1 min (35s less than the previous print)

Now curiosity got the better of me, and I pressed pause - 133 layers into the print (the floor had finished printing) - good news all three parts are stuck fast to the build plate just got to keep my fingers crossed that there are no issues from pausing the print.

Finished washing the spring and W irons

I damaged a few of the springs trying to remove them from the build plate , as mentioned above they are nailed in place, and it was the rafts that were breaking .

I'll try the next print on the other printer as this doesn't have the etched checker board pattern on the build surface.

Paul