How to model a weir

How to model a weir

Dams are built to hold back a body of water either to give a head of water to drive machinery, to allow water transport or to prevent seasonal flooding.  They are used to create lakes, canals, mill ponds and reservoirs.  However, once the body of water behind the dam is full, dams do need to let some water through.  That’s normally via a weir.

Overflow Weir on a canal, Lapworth, UK
Overflow Weir on a canal, Lapworth, UK
Weir on a canal, UK
Weir on a canal, UK
Weir at Shelburne Falls, USA.
Weir at Shelburne Falls, USA.
Weir at Whitinsville, USA
Weir at Whitinsville, USA
Weir at Lowell, USA
Weir at Lowell, USA

 

They are often straight topped or can curve round.

Tools and Materials

All of these materials are commonly available in either a DIY store or art shop. Online shops will also carry them.

  • Cling film
  • Masking Tape
  • Silicone adhesive or silicon sealant – preferably transparent but translucent will do
  • Cocktail sticks
  • Epoxy resin
  • Mixing cup and stirrer
  • Paint – white and river-colour
  • Acrylic Gloss Medium
  • Cotton Wool

Thanks to Paul at EDM Models for the Magic Water.


Index

00:32 The Real World – prototype inspiration
01:46 Tools and Materials
02:39 The Method
24:31 The Final Result
25:12 Mini Kathys
26:29 Closing

The whole modelling water course series can be found by clicking here.

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