Products designer should consider mold manufacturing, design for manufacturability.

So true! Designers and also mechanical engineers that suffer from lack of practical experience. I'm a mold maker who design and modify parts and escort the project. I have tried endless time to explain what you describe to clients but it seems that the mold doesn't interest them just the product .for me they are linked and inseparable

Like any job it really takes time to develop designers, most designers have never spent anytime on the manufacturing floor so they have never seen the results of there mess. Mosty companies will set up design guide lines for designers to follow but it's up to them to follow the rules. The other problem is designer treat there designs like it's thier baby and when you tell them thier designs are bad it's like calling thier baby ugly. I've alway said designer should be required to spend 1-2 years on the manufacturing floor if they had to live with thier design they would be more open to changes.

yes,I'm trouble in this situation,my clinets don't know the mold much more,his designer is so shit,and we open the mold for his private company,the mold has been modified many times,....we have given them many our suggestions,but seems hard for them to understand....It waste too much times and costing,they just wanna the product,when can I get the first products.....That's the most important thing they care,,,,,

I accept this.... If customers should review the product with experience mold designer/maker before mfg, we can avoid major issues.recently mold designers became as a product designer also.they well known about mfg feasibility.

So back to the Norm. There was a time when some companies insisted
1) you had to serve a toolmaking apprenticeship
2) you had to then become a tool designer
3) only after 5 years as a tool designer could you become a product designer. Hey presto automatic concurrent engineering when designing the product you were designing the tooling and envisaging how to manufacture the tool.
Then arrived CAD/CAM and e.g 6 months experience with CATIA was more important than 30 yrs experience in the industry. So 2 steps forward and 5 backward and only marketing spiel for various methods of concurrent engineering to give us some hope.
As said before you need time to develop the designers from basic tube jockeys to something useful.

ribs? the norm is 2/3 of the wall thickness to avoid sinkage and most product designers know this. The usual mistake is that they do not realise that the wall section being thicker than the thin end of the rib will shrink more and depending on the product design cause the part to distort. So the final design of the product to avoid distortion needs a bit more thought than the just the 2/3 rule to avoid sinking.

Ken isn’t this just another sign of the times, with the world being so small these days. You use to be able to go to tool shops in N/A and Canada and find a building full of craftsman’s not the case anymore. Shops just can’t afford to keep that much talent, now you’re luckily to have that 1 go to guy. Now that the world is so much smaller and communication is so much easier you can go to other countries and pay half the cost for designers and just send data around the world. With that comes a prices and in a lot of cases that’s going to be experience, not sure if anyone can do anything about it but it’s the world we live in now.

Tom: Yes of course it is a sign of the times. The long term training is no longer practical. Plus the specialisation needed for the high end software Nx Catia Pro E etc. cuts the experienced people into even smaller groups. The last of the craftsmen are few and far between. We now have precision machinists without the same knowledge and skills so the developing countries can buy the same equipment and do a job much cheaper.
But it highlights the need for good management of NPI to avoid the pitfalls with a highly experienced man to mentor and guide the team thro the DFMEA meetings etc to provide a robust design at the gateway for the design freeze with the DFM issues sorted out. The toolmakers and product designers learn to respect each other during this phase and start to understand each others problems.
If this is not done the other problem and common problem is that the development team is late then cuts corners throws the design to the tooling team with reduced delivery times. The resulting back and forth over the DFM issues puts even more pressure on the toolmakers. We have all been there.