Hello and welcome to a new Rule of Thumb post. Today we discuss the rule of 10 in context of the Polymer Product Pentagram.
Uncovering
mistakes during or after the plastic design and production phase leads to high
fixing costs in return. The fixing costs are described by Mr. Anderson in his
publication as “The Rule of 10” [2]: when costs are discovered in the next
design phase, they increase with the factor 10.
Let us now
apply the rule of 10 to our Polymer Product Pentagram [1]:
 |
| Polymer Product Pentagram |
In case one
needs to re-select another polymer, costs will increase by 10. If the part
design and polymer selection stage are approved, however a mistake was made in
mould design and construction, then costs are up by a factor 100 already.
Altogether,
it does not need to be exactly 10. In one's particular case it may be 6 or 8,
which is still a high number.
Thank you
for reading and #findoutaboutplastics
Greetings
Herwig
Juster
[1] Polymer Product Pentagram: https://www.findoutaboutplastics.com/2021/01/rule-of-thumb-for-polymer-engineering.html
[2] The Rule of 10: https://articles.bplans.com/the-rule-of-10-for-product-design/
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