Drawing Standards

[richardandtracyParticipant @richardandtracy]

Mark,

The company I work for makes boxes. Fancy boxes for satellites & such, but they are boxes. We are not foundry specialists, which is why we go to a foundry so they can overlay their expertise on our finished shape. We do not expect the foundry to treat our finished parts as the pattern. Having cost the company thousands due to delays in testing and delivery, it's not a mistake that we are going to permit twice.

Edited to add: Also, how much shrinkage is there on the new EN version of AB2? I have no idea & it's not quoted in any standard we have. We need the foundry to put their experise in here as well as where to put the sprues.

Regards,

Richard.

Edited By Richard Williams 7 on 02/06/2013 17:39:27

[Mark CParticipant @markc]

Richard,

Was not having a go at you, it just appears that if both parties (you obviously understand the shrinkage issue especially if you are doing molds) knew there would be shrinkage, someone ought to have asked the question – has shrinkage been allowed for, can we use the model as is, do we just need to add the casting features etc.? It sounds like they might have been doing it for the first time also, or had not long taken the technology on.

It still sounds like communication and it is a shame that the technology will not be adopted especially if you are making expensive, fast turnaround tooling as it would speed things up considerably and probably drive down cost as well.

Mark

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