PVC Design Considerations

[Diabolik]

This is my first project on here and I have 3 quick questions I can't seem to answer. I am making an adjustable coupler for PVC pipe.

1) reading the considerations for molds, I am trying to round all of the outside and inside corners of my design. I have a set of lines on the backside of my part that are mated against another surface at 90 degrees. Since the lines are all connected, the drawing is rounding the corners where the 2 walls meet. I cannot find a way to only round parts of the group. Is this something I need to worry about, or do I need to just note it ?

2) It says that side holes complicate the mold and increase costs. If I eliminated the holes and replaced them with small countersunk areas (to give an option to be drilled later if need be) would that be a better option ?

3) I have 2 layers on top of each other. No matter what I try, I cannot get the "air outside" feature to work unless the line for it is larger than the other level. Being at the same size, doesn't work. I ended up creating 2 round corners and assigning them a -z to achieve the same effect and it worked. Is this acceptable ?

Thanks.



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[Tech2]

1 - Don't worry about it.
2 - No - any recess in a side view complicates tooling although it is possible.
3 - If the 3D view works it's probably OK but it's hard to comment without the file posted.