Alignment.

 It is difficult to show the baseboard alignment method I use. Basically a male fits a female - brass turnings which fit into 8mm holes drilled in the ends of boards which have been clamped together hopefully in the right position!
The snug fit makes sure that the boards fit in the right place every time.
Moving to fiddleyard tracks being held in the correct place- I use square brass tube with a solid square bar which fits snugly.
Bent at the end and used as a simple bolt which makes each trach align with its intended route.

The bolt also gives electrical connection to the intended route.

Track and Fiddle Yard.

 At last the track and fiddle yard board are complete.
A couple more pieces of 9mm ply have been turned into baseboards and the fiddle yard curve cut.
To keep the Fiddle board square I have screwed a couple of pieces of aluminium angle to each edge-this should keep it flat!
At the end a piece of sponge rubber has been secured with yet more angle which should prevent disasterous runaways.
Next time I hope to show how the boards are kept in the correct position  and the fiddleyard tracks aligned.

We all need support!

 I have always attached the legs to all of my previous layouts and I see no reason to change.
Liking to keep things simple, a method of keeping the legs in place is one that I came across quite by accident a long time ago.
With the legs attached by hinges to the end of each board- one board has two- a way of keeping them in position was considered. Enter the humble screw block available from most DIY outlets at very reasonable cost- these are the things that keep flat pack furniture hopefully at right angles and therefore square.

An elongated Z shaped bar is produced with 3mm diameter rod which has each end bent to a right angle, preferably in the same plane!
These rods are them simply inserted into the blocks which keep the whole lot upright and rigid.
There- said it was simple.

Rapid Prototyping.

 Two bodies for Panniers have been produced, a 64XX and an early 57XX.
Subsequent pictures will show that some work has to be done to the raw moulding as due to the body being built up in layers, a corrugated effect is evident. Bear in mind that the engineers have only recently obtained the machine and these are early examples. It may well be that ,with experience, a better result will be obtained.
More later- comments are welcome but it must be stated that this will not be a commercial venture at this time.Please see my amendment to the first Rapid Prototype post- The measurements were actually used to produce a 3D drawing- not a scanned drawing as I had said.

Rapid Prototyping

Bodies and chassis of the 54XX Pannier Tank will both be seen at the next Dorset Railway Modelling Group meeting on the 21st July.Interest seems to be there and further updates will be posted shortly.

Rapid Prototyping

New technology is really getting to the point that we can have anything we want in the time it takes to scan a drawing into a computer.
One of our group members, Nigel, has taken the opportunity of a project at his place of work to put this theory to the test.
Taking drawings published in an elderly edition of Mixed Traffic these were measured transferred to a 3D programme and transfered to a SD card. The card was inserted into a machine which heats plastic to about 200 degrees and produces a solid copy in layers of .2mm.
As can be seen, the result matches exactly to the drawing. More later!

Dorset Modelling Society Meeting July 21st.

Some time ago I waxed lyrical about the products of Jeff Weston who is the brains behind Modern Image Models.
At the time I mentioned that the bricks scaled at almost 3mm scale and so impressed I passed a sample onto John Sutton, the editor of the 3mm Society's Mixed Traffic for appraisal.
The Good news is that Jeff has agreed to visit us during our next meeting-Saturday July 21st- starts at 1pm, for a talk and practical demo of his products.
Our meeting place as usual is-
The Pullman Coach,
Avon Causeway Hotel,
Hurn,
Christchurch
Dorset BH23 6AS.

Worsley Works M7.

 Part of the reason that I bought the Hornby Push-Pull set was so that it would aid me creating the same in 3mm scale.
At long last the chassis was made during our June Dorset Group meeting.
The chassis from Worsley is etched in nickle silver and is a quality etch. The axle holes were opened out with a broach and straw hat bearings soldered in place. the chassis was bentup and a couple of spots of solder applied to keep it all square.Wheels are Markits 16.5 mm drivers available from the Society Shop. The motor, a Mashima 9/16 with 40:1 single stage gearbox is from Branchlines. Power has been applied and all seems to work OK. A session on the rolling road with a good oiling should ensure that it is well run in ready for the bogie and body.

Another 3mm Layout.

 Robert has gone large.
A new layout that is not Micro-sized.
No name as yet but progress is being made and the initial results are very promising.
Two boards this time with hand built points.
The tunnel is an extended 2mm scale product which shows how adaptable us 3millers can be.

Modifying Tri-ang Class 31.

 Peter has been converting stock to run on 14.2 mm track for a while.
However, he has recently started rewheeling the Tri-ang TT Class 31.
As can be seen, he has removed the original 12mm wheels from the nylon axles and substituted them for finer treaded ones.
The lower photo shows the improvement this brings but the problem of keeping the wheels square is proving somewhat of a problem.
I am sure he will keep at it and that a solution will be found.