One for the CAD lads

[silverfoxcc]

I am building a 5in Gauge live Steam loco and visited the NRM where i found the plans for the loco. Took many pictures and have a stack showing the spanners ,wrenches etc which as most of them are in '2D' are a doddle to do on Autocad
Attached id one of the firing shovel.and i am trying to get my head around as to what shape the outside lip is to be so it fits onto the base which will be a flat piece of 1.5mm steel with slots aound the edge spo tabs on the surround can fit into , the whole lot then being silvered soldered
As the CAD drawing needs to be in mm, the scale is 2.248mm to the full size inch so the base plate will be 17.98mm by 33.72mm

As most of the previous stuff was just flat plates that could be fabricated up to a 3D model, this curve has go me beat.

Any suggestions, I have some card i could cut out to get it and then draw it, but was wondering if there is an easier way to do it in 2D any suggestions

TIA

[jules_s]

I'm not sure I know what your question is...

If I think what you are asking (trace the outline)

Import a pdf underlay - Command: area - Might draw a pline inside the void

or

Command: Pline (Autocad) use the 'nearest' snap to trace it if you don't near it 100% accurate ( I assume not)

[Billy Eyelash]

Is this what you are looking for?



Quickly modelled full size in Onshape Here

It is a public document, you need to sign up for a free account to view and modify it.