Help with .IGS files please

[LordOxygen]

Hi all, this is my first post. Sorry for a newbie question. I'm very new to CAD and it's all rather overwhelming at the moment.

 

I have 2 .IGS files (which I also have saved as SLDPRT files) that were drawn for me. I can open .IGS files in my copy Free CAD and the SLDPRT files in an eDrawings viewer.

 

I have sent the .IGS files to a CNC routing company as I want the shapes to be machined / CNC'd out of wood. However the company is saying the curvers are coming out faceted and asking for 2D DXF files.

 

Is it possible to convert an IGS file to a DXF files so all the dimension information is maintained?

 

Thank you for any help

[JD Mather]

Can you zip and attach the original IGES file here (or at least a screen capture)?

 

From your description I suspect the original file was probably an stl file that might have been converted to igs.

The sldprt file might be better - can you zip it and attach it here? eDrawings Viewer is just that, only a viewer. You will not be able to do anything with the geometry.

 

This is a advanced topic - without the file, I don't think there is much help that can be offered.

[LordOxygen]

Base Layer.SLDPRT

 

Hi, thanks for the reply.

Here is 1 of the 2 files I need in 2D DXF format, it's the SLDPRT file. I suspect you're right that the IGS file was created from another format.

 

Here is the part

 

[LordOxygen]

Well, I did post a reply with the SLDPRT file attached - and it's gone! I guess because I'm a newbie I don't have full posting rights so it was removed. (In fact you can see my post count is now 3 with only 2 visible posts)

 

I suspect you're right, the IGS file was created from another drawing format quite possibly an stl file.

[SLW210]

Well, I did post a reply with the SLDPRT file attached - and it's gone! I guess because I'm a newbie I don't have full posting rights so it was removed. (In fact you can see my post count is now 3 with only 2 visible posts)

 

I suspect you're right, the IGS file was created from another drawing format quite possibly an stl file.

 

No, you just have to wait for a moderator to approve the attachment. All done now.

[JD Mather]

The part is not fully defined and the dimensions don't make logical sense to me?

What is the angle supposed to be?

 

[LordOxygen]

The 40.9 angle? It's irrelevant and shouldn't be there. It's only the outer shape that's important along with the location of the 4 holes (not shown in the above).

There are fillets missing on your drawing, either end of the 101 dimension.

Edited November 7, 2013 by LordOxygen

[LordOxygen]

Those dimensions are not what was entered into the CAD program. They were round numbers, clearly something has gone wrong with my file and is causing problems.

[JD Mather]

None of these numbers were entered in creating the part in SolidWorks.

These were my dimensions in attempting to understand the geometry.

The feature tree was rolled up above the fillets and holes to analyze one feature at a time.

It appears to me that the SolidWorks user needs basic training in defining part feature dimensions.

 

The manufacturer will have the same questions as these dimensions are not measurable and therefore cannot be sure of meeting specifications.

Do you have a dimensioned drawing or hand sketch?

 

The correct angle dimension should end all doubt.

[LordOxygen]

JD Mather

None of these numbers were entered in creating the part in SolidWorks.

These were my dimensions in attempting to understand the geometry.

The feature tree was rolled up above the fillets and holes to analyze one feature at a time.

 

Ah, ok they're your numbers.

 

It appears to me that the SolidWorks user needs basic training in defining part feature dimensions.

 

That may be the case, he's a friend just trying to help. He did do a very good job with some other parts I need (this is for a precision DIY project).

 

The manufacturer will have the same questions as these dimensions are not measurable and therefore cannot be sure of meeting specifications.

Do you have a dimensioned drawing or hand sketch?

 

The correct angle dimension should end all doubt.

 

Makes sense why they're having problems now you've explained, so thank you! Yes I do have a 1:1 hand drawn sketch, with enough dimensions to draw the shape. I'll have another chat with my friend, I'm sure we (he) can work this out.

 

Cheers

[Quik&Easy]

Its very possible that some of the arcs were actually interpreted as splines during conversion and as such, many CNC machines will not recognize them......OR.....when attempting to convert the splines to polylines, the number of vertex's is too low, resulting in visible facets.