A brief update on some more progress on the Chilcott’s Creek bridge scene.
The bridge abutments are now fixed in position, and most of the foam is also fixed down.
I also did some more weathering to the bridge piers. Following on from the previous Part V post, the rust streaking was done using oil paints and turps to drag the colours down the piers.
I’m quite happy with the results with some more work to be done.
I have recently been redoing the weathering on the Chilcott’s Ck bridge abutments and piers. I wasn’t happy with my first attempt using the acrylic crayon powders quite a while ago. So, this time using oil paints, I applied an all over light grey colour using a stippling brush and I think it has produced a neat effect. Then using other colours like black, white and more grey, I have again stippled over the top for a random effect. For the rust staining, I used the oils again but washed them down with turps. Again pretty happy with the results so far.
I have also finished the “base” grey coat on the piers and will let that dry before moving onto the rust staining.
I have also made some more progress on the Chilcott’s Ck bridge scene over the last few days. A slight change of plans to what I mentioned previously, in that I have decided to fix the timber sub-module base in place then add the scenery foam around and on top of it. The abutments will then be fixed in place, along with the piers. Scenery including dirts and grasses will then be applied, and hopefully some ‘water’ in the creek! The bridge span will then be fixed in place once all this has been completed. Pictures show all the foam pieces and the sub-module base temporarily in place.
A plywood base was fixed in place to provide support for the foam.
With the bridge sub-module sitting in place, a jigsaw of various pieces of foam were cut to fit. First off were two pieces front and back to continue the creek bed, which was drawn in and then routed out to the same depth as on the timber sub-module.
Then other pieces of foam were cut and shaped to fit the previously made pieces under the bridge.
The last two pictures show the bridge span and piers temporarily in place to give an idea of how the scene will look. Final shaping of the foam will be done when the pieces are fixed down.
Recently I have continued work on the Chilcott’s Creek bridge scene.
Back in December 2014, I made a post where I had started to weather the bridge piers and abutments.
I was never really happy with how the colour on the abutments had turned out, so I decided to redo them.
Using some new oil based paints and some new techniques, I mixed up a new lighter colour of grey and applied to the abutments. I am happy so far with the result. The paint was stippled on and has given a rougher surface appearance. I’ll redo the rust stains as well. I think I will also redo the piers.
I also added the small extensions to the wingwalls.
The plan was always to build the bridge on a sub-assembly and then slot it into place. As the base of the sub-module needed to be near to perfectly flat, I decided to laminate a piece of 3-ply to another piece of hardwood. I roughly marked out the future riverbed and removed the first layer of ply using a router. My idea is to eventually try my hand at some model water.
I have also started on forming the scenery around the bridge. The idea is to form up the base scenery foam, add the dirts, grasses etc then assemble the bridge, fix the sub-assembly into the layout, levelling up as I go. Anyway, we’ll soon see if that plan works!!
The last photo shows the bridge & piers temporarily in place. You get the idea!!
Some months ago I started laying tieplates on the bridge and have fixed one rail in place. I had been thinking of ways to do it easily, including making a jig, but Andrew suggested I just line them up against a straight edge.
The frets of the tieplates were masked off where the base of the rail sits, painted with some Krylon flat brown paint, then dusted a ‘rusty’ colour with some powders.
The underside of the tieplates were then coated with Pliobond glue.
The individual tieplates were then cut out and located on the transoms, one at the end and the other about 40 transoms away. Using a soldering iron, the tieplates are bonded to the transoms. The heat activates the Pliobond. This then gave me two points to line the straight edge against. The straight edge was clamped to the bridge. More tieplates were then bonded to the transoms. The process was repeated along the bridge.
The next step was to fix one length of rail to this first run of tieplates. This was done by applying the Pliobond to the underside of the rail as well as the tops of the tieplates, then locating the rail in position and carefully applying heat to the top of the rail using an old clothes iron and gradually moving along the length of the bridge. The bond appears to be OK so far.
The plan is to then, using gauges, locate more tieplates underneath the second rail and repeat the above process.
I have completed installation of the foam roadbed all the way from Chilcott’s Ck almost to Ardglen. I have also laid quite a bit more CV track base from Chilcott’s Ck through Kankool to just before the first peninsula.
The process was the same as outlined here when I did the Temple Court section.
Under where the turnouts are located at Kankool, I laid 3mm cork down instead of the foam. This was done to make it easier cutting out a hole for the future throwbar rather than trying to cut it out of the soft foam. In hindsight, I probably only needed a small section of cork directly under the toe of each turnout rather than under the whole turnout. That is what I will do on future turnouts.
Taking on board an idea from Andrew, I also commenced installing strips of the high density yellow foam to the sides of the spline. The idea here is to lay continuous foam strips along the spline to not only allow for shaping the trackbed, ballast profile and drainage, but to also make it easier to install the main scenery foam later on, rather than trying to cut many small irregularly shaped foam pieces to try and fit against the spline.
Today I made another jig to enable application of white paint on the ends of the transoms.
Up until a few days ago, I had no idea as to why the ends were painted white, but after obtaining some info from two fellow modellers, it appears it was a form of timber preservation treatment.
The simple jig was made from styrene strip and it sat over the transom leaving a six inch piece exposed at the end. Some acrylic white paint was then dry brushed on the top, sides and end of each transom. The resultant finish I think looks like the white paint has been there a few years.
The following two pictures show the finished result.
Transom installation is now complete on the Chilcott’s Ck bridge.
After the initial staining mentioned in the previous post, I thought the transoms ended up a bit too light, so I attacked them with some of the crayon powders, and I think they look heaps better. The plan is to do more weathering using the powders after the rails have been installed.
I had thought a fair bit on what type of glue to use for fixing the transoms to the girders, and after seeking advice from fellow modellers, I decided to use Tarzan’s Grip. I had thought about using 5 minute Araldite, but there’s just not enough working time with the stuff, and the normal Araldite takes hours to completely set. The Tarzan’s Grip cures in thirty minutes and remains usable for about ten minutes.
There are ninety eight transoms on the bridge and I decided to fix down ten at a time.
The first transom was fixed in place, ensuring it was square to the girders, and allowed to set before commencing the others.
The spacing between transoms was made at eight scale inches using pieces of styrene strip.
After gluing a batch of transoms in place, some old Kadee uncoupling magnets are placed on top to keep things flat and using the bottle of Tarzan’s Grip as a weight, are left to cure for thirty minutes.
A progress shot.
Next job is to make a jig for locating the tieplates on the transoms.
After the recent boost in my enthusiasm following the 45 class weathering, I decided to recommence work on the bridge over Chilcott’s Creek.
Following on from the weathering of the girders, I had been thinking of ways to attach the bridge transoms to the girders.
I have decided to use timber transoms, using Kappler Scale Lumber 10” x 6” stripwood, which were then cut to a length of nine scale feet.
These were then stained with some AIM Quick-Age weathering solution.
I had to come up with a way of locating the transoms on the girders and to ensure they are aligned centrally.
I decided to glue a small piece of stripwood on the underside of each transom so it would butt up to the inside edge of the girder.
I made a simple jig to hold a transom and to locate the piece of stripwood which was 6mm from one end.
The next stage is to glue the transoms to the girders and then to attach tieplates to the transoms.
Since my last post, I have been busy with work on the upper deck above the Chilcott’s Ck to Kankool section.
To support the upper deck valance and future lighting, steel brackets were fabricated from second hand 20x20mm square tube, along with bracing made from thin steel plate.
A simple timber jig was made to hold the pieces of tube in place whilst the brace plate was attached using pop rivets.
These brackets were then screwed to the wall at strategic locations at wall studs.
After the initial installation of these brackets, I discovered a potential flaw in my design. The two rivets fixing the brace plate to the vertical tube were shearing off with only minimal downward force being exerted at the outer end of the horizontal tube. Now, I’m not sure whether it was actual rivet failure or what, so I decided to replace these rivets with a 3/16” bolt/spring washer/nut combination. The result is a much stronger feeling bracket.
I had also decided to install a ceiling above each scene, as I didn’t fancy the idea of being able to see the open benchwork when looking along the scene from one end. Once painted, I also think it will assist in spreading the light onto the scene.
The ceiling is made from sheets of 3.2mm MDF (2440x1220mm). This required the installation of a timber sub-frame built around the steel brackets to allow for the securing of the ceiling. 2×1 DAR pine was used.
More framing was also installed in the corner to support the backscene and ceiling.
A ceiling section was cut to size from the MDF and secured to the timber frame using Liquid Nails and small gauge countersunk screws. The adhesive was also applied to the steel tube. Temporary supports were used to hold the ceiling in place whilst fixing the screws. After the screws were installed, extra temporary supports were fitted to force the ceiling against the steel tube whilst the adhesive cured.
The ceiling section in the corner proved to be quite tricky to cut to size, but by using accurate measurements, I ended up with a piece that fitted perfectly.
A couple more sections of backscene was also installed, including the piece in the corner.
These sections of backscene have no need to extend completely down to the benchwork, as the track level will be around where the lower edge of the MDF is in the picture above, and the majority of scenery here behind the track will be hills covered with trees.
I also started playing around with how I will locate the Kankool lever frame into the fascia. The picture below shows a mock-up of what I hope to achieve.
The MDF immediately behind the frame will be the scene fascia and the curved piece in front is to indicate another section of fascia that will serve as ‘protection’ for the frame. More on this later.
Apologies for the lack of updates since early Dec last year. I have been busy with some scenery in the Temple Court section as well as some more benchwork and spline construction.
Temple Court scenery
I’ve made a start on some static grass application but have not done much since Christmas. It’s been tricky getting the look and colours right, but I think it will look OK as it progresses.
Some pics below of the progress so far.
I still haven’t done any more with the rocky outcrop, but you can see lots of plaster castings sitting around for inspiration.
Lower level backscene, upper deck benchwork and spline
I also started installing the backscene from staging through Kankool, including the entry from staging onto the Chilcott’s Ck bridge scene.
The last picture above shows the new supports installed for the upper deck above Kankool as well for backscene support. As mentioned previously, I am using 3mm MDF as the backscene and this will be painted with the sky colour.
I had always planned to work on the lower deck scenery and trackwork from Chilcott’s Ck bridge to Ardglen first before the upper deck, mainly due to thinking I would have access issues on the lower deck for scenery work if I built the upper deck benchwork. In the last few weeks I have since decided to progress with upper deck benchwork, spline and scenery from Ardglen through to Pangela as the next stage.
This all came about after I had started to think about getting the bridge in place and laying track from staging through Kankool. But I realised that this may not be such a good idea as once the bridge was installed, and I had scenery in place, I would be working above all this with the ever present danger of things falling on the scene below.
So, the decision was made to continue with upper deck benchwork above Kankool and around to Pangela as well with spline construction from Ardglen to Pangela.
As I had already built the benchwork for Ardglen and the section above Chilcott’s Ck to Kankool some time ago (see previous post), I started to lay out the spline in this area.
As mentioned above, the plan is to continue with upper deck benchwork all the way from Kankool through Pangela and to build the spline from Ardglen to Pangela, then start on basic scenery formation. Once all the messy stuff with plaster is done on the upper deck, I’ll probably then look at getting the Chilcott’s Ck bridge installed and continuing with scenery through Kankool and beyond towards Ardglen.
Cheers for now.