Scale7 JB Workbench.

Eastsidepilot

Western Thunderer
I will be commencing the redrawing of sheet 2 with the boiler, some time soon. :headbang:

No idea how I got that wrong. .......................

Bored now..

JB.

JB,
As my Father's apprentice ( Carpenter & Joiner) I used to get down when I made a mistake but he taught me that it's not so bad to make a mistake but it's better to know how to correct it !
You make less and less mistakes as we get older in a profession but you'll still make them.

An example :- I've made a window frame in the long past that was the wrong size:rolleyes: ...not by much :confused:
This taught me to double check my setting out...everytime ....made more window frames with success but did mark some out wrong ( tiredness ad lack of concentration ), but with checking stopped the mistake happening again before cutting timber :D

Col. :thumbs:
 

Scale7JB

Western Thunderer
Hi Colin, thanks mate. I must admit when I was working in Windows, I had to order vertical sliders in at around £1000 per item and a 6 week lead-time. It really hurt when on one or two occasions I had ordered the wrong size!

JB.
 

mickoo

Western Thunderer
We all make mistakes, it's just that some are better at covering them up, that's what I was told in my apprenticeship :eek:

At which point I kinda realised that most people tend not to make less mistakes as they get older, just more adept at covering them up :D

My best one to date was a set of tank engine etches which had two complete left sides because I simply failed to flip one :p

If you increase the boiler size, then logically the firebox radius will enlarge so watch your cab front windows, you may find the lower inside arch is then wrong or the firebox encroaches over them, in short, check your cab front is still okay with the enlarged firebox radius.
 

Yorkshire Dave

Western Thunderer
If you increase the boiler size, then logically the firebox radius will enlarge so watch your cab front windows, you may find the lower inside arch is then wrong or the firebox encroaches over them, in short, check your cab front is still okay with the enlarged firebox radius.

And resize any internal boiler bulkheads/formers - if not already thought of!
 

Scale7JB

Western Thunderer
Thanks chaps, yes it is a very big job to change everything, especially as there are two sets of smokebox formers - detailed and non-detailed.

JB.
 

Brian McKenzie

Western Thunderer
I do like you're thinking Brian, thanks! What are your findings?
Looks to me that everything is very close but for the boiler as suspected.

The footplate level looks different but I think that could be put to the camera angle. JB.

Not too much should be read into that comparison - as finding photos with matching perspective angles would be a rare event.

e.g. The photos were aligned using rail level and at the top of the boilers.
The centreline of the model boiler ought to have been aligned with that of the prototype, and this would reduce the difference between footplate levels - which is likely a photo perspective thing.

I agree with your observation of the apparent extra 'airiness' between boiler and frame, which a larger diameter boiler should fix.
Can you determine a prototype dimension for the gap between boiler cladding and top of frames?

Very much like what you are doing and the ethos of getting it right. :thumbs:

Brian McK.
 

P A D

Western Thunderer
Looking good JB.

Brings back memories of the Finney 7 T3 around the cab/firebox area with curves going this way and that way all over the place. It must take some doing at the design stage getting things right, so that they all to come together correctly when building.

Cheers,
Peter
 

Scale7JB

Western Thunderer
Looking good JB.

Brings back memories of the Finney 7 T3 around the cab/firebox area with curves going this way and that way all over the place. It must take some doing at the design stage getting things right, so that they all to come together correctly when building.

Cheers,
Peter

Sorry Peter, forgot to reply.

It's not so much design at this point, as everything has been designed for you, in the early 1900's. As mentioned in another thread a while back, the importance of drawing your own GA in CAD before you get started is paramount. Then you can pick which lines on the drawing you need to create each piece. You do need to have a pretty good mental visualisation of how each piece interacts with each other though.

I know @Oz7mm uses 3D cad to show the model built up on the screen, and can then take each individual piece and unravel it to lay it flat for 2D etch artwork.

I'm not that clever.

JB.
 

Martin Long

Member
This is really something! I am wrestling at the moment with an ACE Claud and it is a real pig and will not be as detailed as your one. The D16s are one of my favourites and are so typical of the GE lines. Having seen this I am almost at the point of throwing the ACE away!

A masterful piece of design. What a talented man!

Regards

Martin L.
 

Scale7JB

Western Thunderer
Very good of you to say Martin, thankyou.

This version is still S7 at the moment, but if there is enough interest then I'll re-design for Finescale.

It would be interesting to see what the Ace kit is like in comparison.

JB.
 

Oz7mm

Western Thunderer
I know @Oz7mm uses 3D cad to show the model built up on the screen, and can then take each individual piece and unravel it to lay it flat for 2D etch artwork.

I'm not that clever.
JB.

Thou dost flatter me sire. I resorted to that method to try to avoid mistakes and to look at buildability. It's not an infallible method but it helps. It also allows you to do illustrations at every step of the construction for the instructions without having to remember to take photographs (something you are far better at than me).

The other JB
 
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