Please pass this information to designer for follow step to make DFM proposal.
Item in DFM as below:-
1. Parting line
2. Gate position & design
3. Runner design
4. Ejector pin position.
5. Draft angle for part release.
6. Undercut release design.
7. Weak steel
8. Balance Thickness of product.
9. Mold flow analysis about weld line, fill time, warp page & air trap.
10. Mold size must suite to injection machine size and tonnage.
Please consider all this issue during mold design in the first stage.