cassettes...revisited...
Entry posted by bcnPete
1,397 views
Good evening,
Two blog updates within a week 
Whilst trackwork mods and sparx has been ambling along in BCN, whilst in LDN I have been working on the replacement cassettes needed. To recap briefly, a simple folding affair was made using a wilko hinge, some thin timber sheet and some brass strips, as per this:
Whilst the concept worked, they were too short as the 4 Cep needs a 600mm length cassette and to be honest, longer ones would mean other more interesting train formations. First job was to source some brass strips from 4D model shop and these had been machined at 305mm long - perfect!
Secondly, having struggled with cutting out the 3mm timber before with a 10A blade, I wondered if I could make use of the laser cutter at my new place of work. Following induction, and a quick model for the current project I am working on, I prepared a drawing using Microstation Software. This was then set out to meet the retraints of the cutting bed and then this was sent to the laser. Paul the office model maker kindly let me have some offcuts of 3mm ply from the recycle bin. A quick screen grab using the phone to indicate how it looked.
I then watched in awe as it cut out the pieces beautifully...and with a great smell of burnt 3mm plywood lingering afterwards! The small set of rectangles are for packing underneath the strips to give clearance to the folded hinges.
These were then taken home and assembled over the last few nights. Its slow work as I need to leave the sides to set with PVA overnight before tackling the brass but am trying not to rush it. This evening I glued the brass strip using yellow Zap adhesive as an alternative to araldite which seems to take ages to set.
Finally, a few pics of it completed. It now needs a bolt through the ends as before to keep it together once folded and the electrical connection between the middle. Am thinking this time to just hard wire that rather than my insect like rail thingys from last time. Apologies for the picture colour at the end...the Landladys floor is a bit highly varnished in places 
1 down...5 to go...
That's all for this week I think...tootle pip.
-
19
13 Comments
Recommended Comments
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 accountSign in
Already have an account? Sign in here.
Sign In Now