The method of fixing very largely determines to what extent a product can be disassembled for re-use, material recycling or energy recovery. Mechanical connections are clearly preferable. Components fixed with adhesives or mortars will, in many cases, be difficult to disassemble; that may also require onerous cleaning.
When mechanical connections are used, notching and holing should be avoided where possible and fixing free zones should be a part of the design to maximize the re-use value of components.
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