attached is stp file. i want to make parting line , core , cavity for this tube. but i am totally confused. if any body can help me would be great
I didn't look at your part, but you might want to ask this or move it to the Model and Assemblies/Plastics and Mold Design sub-forum. You should have Move available as an option under Actions to the right side of the page.
You can split the tube with the other surface and then use the split edges as parting lines.
Just looked at your model and found out that model is not correct and is intersecting with itself.
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