Mr Roo
Member
- Messages
- 586
- Location
- Edinburgh
No - because you can look at a drawing and see the finished part.
And if you use a 3D CAD system, you will take advantage of the automatic drawing view creation, but realise pretty quickly that while the drawing frame claims to be third angle, the views its giving you are in first angle because the clown who just over-wrote the last decade of settings and tweaks to "standardise" settings for the new update doesn't understand a thing . . .
You will know how and where to put dimensions, where a section, a cut-away, a partial view will work and enhance the understanding of the drawing. You won't dimension to hidden detail, you won't put dimensions to one feature on separate views spread over three sheets, then actually say what it is on the fourth sheet, but instead try to make it clear in a concise and easy to read way. You won't put totally un-needed isometric views of a very simple part all over the place just to make it look pretty. And linked to that, you won't ring up the customer and ask for a 3D model of that same ridiculously simple part . . .
You won't throw too many decimal places into simple dimensions (fabrication to three decimal places anyone, meaning for us +/- 0.025mm when to the nearest 5mm would be perfect, you won't put totally unnecessary geometric tolerances on, insist on over-the-top surface finishes.
You won't spend a week trying to make a sheet-metal CAD model, including a flat pattern, when you have no idea of how to actually fold metal, where the tooling needs to go, or that you can't magic metal out of thin air when you've bent it somewhere else already, when a simple standard model would do and allow the chosen fabricator to make best use of his skills and equipment.
Or something like that anyway.
Can you tell we might have a few people who know how to use a CAD system, but no idea how to engineer?
i see you’ve worked with some of the same guys I have!
notable moments include standing on site with a 90 ton pile of steel, trying to make sense of the drawings he’d sent us, only to discover his PLAN view had been printed with the perspective from ground to sky.
only way around it was to look through the back of the drawing, because when we asked him to reprint it as an actual plan view “no, the system doesn’t work like that.”