Yes! I have been having a lot of trouble with follow me but i didn't have two rails to follow so that is probably the issue. Thanks, I can apply this in a few places too.

That looks great, I would love to know how you did the quarter sphere as that is a shape I am using quite a bit...

Gail

Ok this is all good, I am assuming those rockin looking models come from the final rendering not from making really round smooth models which take hours to think about... that is a big help.

What I understand you are saying relates to the grouping question and in short to get both items to intersect at once they should be in the same group or all exploded?

Thanks Remus, I can see the millions of tiny lines on the instersecting shape but I don't know how to delete them without losing the surfaces... newbie ...

And I take on your point re poly count, I am modelling a new product and maybe should let go of the fact it will not be smooth as the real thing, although we do need a certain amount of accuracy to work out the size of the parts - I will keep it in mind as I evolve.

Thanks Gaieus, I think the file is now uploaded...

I will have a look at that, I was not sure on what the difference was between intersecting with model and intersecting with context. Does it makes a difference if the element are grouped seperately? I do that to be able to control them whilst positingbut could explode if it would solve the problem.

GD

Hello all, and thanks for your input on the forum I have learnt so much from you all.

I am new to 3d modelling so still learning the ropes. My issue is that I am trying to insert shapes into a column and having a lot of issues.

I have tried many variations but end up with incomplete intersection - I have to join lines to complete the 'hole' in the curved face.

Attached is an example file, it shows the shapes I started with, and the result after I have spent hours going around the edges mending them. [I found the draw on surface plugin which made my day]. If you zoom in on the insert you will see areas of jagged edges around the intersection where I haven't 'healed' it.

One more note, in the end there will be four shapes intserted in the column - should I position them all then intersect? I am concerned it will re-intersect the other objects if I do it one by one.

Any help most appreciated.

Intersect_eg.skp.zip