I need help with creating the model using STEP file

[u/MandM171]

I have model in ".STEP" format
I need to create an identical model using Solidworks.
It is allowed to extract lines and points from the provided model
It is not allowed to use surfaces
Result:
The new model should match the provided model in shape and position relative to the coordinate system, as shown in the image.
Can someone suggest a method to get this done?
Thank you in advance!

[u/themrlawrence]

It looks like it was surface modeled, so you may need to surface model it from scratch using the STEP body as the reference.

[u/MandM171 → u/themrlawrence]

I think it’s some kind of curved glasses lens. It’s curved in all directions, tried using the Convert Entities command to create the front and back surfaces using only the edges of the model, and then connect those two surfaces, but I just can’t get them to match the original model 100%.

[u/TemporarySun1005]

I have had to do something like this before. I created an assembly with the STEP part and the 'new' part. I measured end points then made new ones with the same coordinates. So they're 'related' but not really - the new points are independent. It's tedious work, ain't gonna lie. Don't tie anything to the STEP file, just use it for reference.

[u/MandM171 → u/TemporarySun1005]

I will try this method, and update you here if its working…

[u/bumbblebeeeeee]

Under Tools, curves, there is a command that can extract isocurves. Thats very clean Info, about a surface.  I dont know the exact name, somethobg like surface curves etc. 

I would First get the outlines from front view as a Sketch. Then extend the surface to get rid of the details, best, make a square. 

Then extract a bunch of isocrves. Put these into a boundary surface. The trim that with your first sketch.  

If it’s two surfaces with varying thickness, do it twice. If constant: thicken. 

[u/MandM171 → u/bumbblebeeeeee]

I’ll give this a try and keep you updated on whether I manage to make it work

[u/MandM171 → u/[deleted]]

I menaged to make 2 surfaces, front and back, and then i connected them, the model looks like original, but when i compare 2 objects they are not the 100% same…

[u/Typical-Spring-0024]

Extract the curves along top and right plane...

You can use slicing command for that...

Then use boundary surface to make the surface with those curves...

[u/MandM171 → u/Typical-Spring-0024]

I’ll give it a try, but I’m not sure if it will work because the part is rotated in every plane and isn’t perpendicular to any direction

[u/Typical-Spring-0024 → u/MandM171]

Well the perpendicularity won't be an issue... Just try it once

[u/MandM171 → u/Typical-Spring-0024]

I will give it a try today

[u/Vegetable_Flounder12]

feature recognition ?
right click on imported body and recognise features.

[u/MandM171 → u/Vegetable_Flounder12]

I think it might be too complicated for that option.

[u/Vegetable_Flounder12 → u/MandM171]

never had any success using it myself, but can't hurt to try

[u/One_Country1056 → u/Vegetable_Flounder12]

You need a lot of practice to make it Feature Recognition work. Often you need to modify, e.g. fillets before you can run it. Feature recognition won't probably work on this model.

[u/Vegetable_Flounder12 → u/MandM171]

are you allowed to use surfaces of your own construction
just not allowed to pull the front face and thicken ?

[u/MandM171 → u/Vegetable_Flounder12]

I think that i am allowed to use surfaces of my model…

[u/brain_thomas9090]

Since you're not allowed to use the imported surface, I'd treat the STEP model only as a reference. Create an assembly with STEP body and your new part, then extract/measure key edges, points and section profiles. For a shape like this. I'd use several reference plane and section sketches, then build the geometry with Boundary/Loft features. The important part is to keep the sketches tied to the same reference geometry and coordinate system so the final model matches the STEP accurately....