Winding Laths – Improve How You Flatten a Board

A good pair of winding laths or winding sticks is sometimes hard to find – I suspect not many have survived the burn pile. The good news is that a new set is easily made in a few minutes at the bench.

Shop made winding sticks

Sighting down a board with winding sticks. This set was made by my friend Bill Anderson of Edwards Mountain Woodworking.

Why would I want a pair of ‘Winding Sticks’? What do they do?

  • This pair of matching straightedges is a fast and invaluable tool that allows you to quickly see if a board is flat.
  • By placing them at each end of a board, sighting across the near stick and looking at the far one, you can more easily see any twisting or warping in the board. The sticks help accentuate any non-planar surfaces.
  • By moving one stick and sighting the board at a few locations along its length, you will quickly see how the board flows.
  • Using a single stick you can also check for any cupping or warping as you would with any other straightedge.
  • Once you identify parts of the board that need to be addressed, you can quickly plane them and re-evaluate the board using these sticks. (After a bit of practice, the process goes quite fast.)
Sloyd Winding Laths

Winding lath by Otto Salomon in the ‘Teacher’s Handbook of Sloyd’ — a great prototype for your own winding sticks

From Otto Salomon’s “Teacher’s Handbook of Sloyd” (above) you can read a nice description for how to use winding laths efficiently. The pair of wooden Sloyd winding laths shown in the picture nest with each other via a set of fitted wooden pins and have a nice relief one edge so you can easily get a finger hold in there and separate the sticks when you want to use them. Salomon also calls out an interesting alternative you can use in a pinch – by turning two handplanes on their sides you can use them as an impromptu set of winding sticks and sight across them.

Winding Planes

Sighting down two bench planes as impromptu winding sticks

Tips on making your own winding sticks:

  • Use quarter-sawn hardwood like hard maple or beech
  • Consider adding a contrasting inlay or strip to make it easier to sight across the sticks
  • I like to use sticks that are 1/2″ thick, about 2″ wide and about 18-24″ long
  • Sticks that can nest with each other or otherwise stay together are more likely to survive
  • Taper each stick on one side so that it’s clear which edge is the top (it will not stand on its own on the edge you plane down to 1/8″)
  • If your sticks ever get out of true you can easily square them up again with a plane

The next time you are out in the shop, make a quick set of winding sticks and see how much it can improve your board flattening efficiency.

Bill Rainford

 

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About Bill Rainford

Bill is an avid woodworker, author and instructor. He currently teaches Traditional Building at the Boston Architectural College as part of their Masters Degree in Historic Preservation Program. He's a graduate of the Preservation Carpentry program and many Cabinet & Furniture Making workshops at the North Bennet Street School, where he also teaches several workshops. A long time woodworker, Bill currently works on commissioned pieces from his own workshop, site projects and personalized instruction. Before woodworking, Bill was a software development engineer. You can learn more about Bill on his woodworking blog which can be found here: http://rainfordrestorations.wordpress.com

2 thoughts on “Winding Laths – Improve How You Flatten a Board

  1. pasha137

    If you paint one winding stick white and the other black the contrast will make them easier to use and also prevent them from ending up in the burn pile. Who burns good scrap wood??

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