Limiting the blade - why does it have to be?

After some sharpening a saw blade must always be limited. Why this is so, what purpose the cabinet of the saw blade meets, and how to proceed with the cabinets, you will learn in this post. In addition, which tools are used for it.

Purpose of the cabinet

Saw blades can get stuck in the workpiece if the cutting width is not wider than the saw blade. This should be prevented under all circumstances, as this may tear the saw blade or damage the workpiece.

One way to avoid getting stuck is to lock the saw blade. The teeth of the saw blade are alternately bent to the left and right, so that the width of the chisel is slightly wider than the saw blade itself.

Schränkmaße

The cabinet width and the cabinet depth are determined as relatively fixed values. The width is based on the thickness of the saw blade and bends each of the teeth by 1.5 times the thickness of the saw blade to the outside. This ensures that the saw can never get stuck.

The cabinet depth is usually one third of the tooth height, depending on the saw a maximum of half. If bent deeper, the sawtooth could break or break.

These values ​​are the default values, with individual saws or in special conditions of use (eg wet wood), the cabinet can be increased slightly - for example to 1.7 times the width of the saw blade.

Tools for cabinets

The tools used can be different:

  • Hammer and anvil
  • Bending Iron
  • Schränkzangen
  • special cabinets for individual saws

Hammer and anvil and cupboard iron have one major drawback: The width of the cabinet created is not always completely uniform. This means a troubled run of the saw, a pulling on the further restricted side and also an increased wear of the saw blade.

Uneven cabinets must be avoided at all costs. In addition, it must be ensured that a tooth which is set to the left is always only laterally set to the left. Otherwise, tooth breakage can be the result.

Schränkzangen

Pliers ensure a uniform cabinet when used with small hand saws. They are not suitable for all types of saws - band saws, for example, have their own cupboards.

In the specialized trade one can obtain Schränkzangen starting from approximately 25 EUR, some models for fine toothings are equipped also with an additional Lupe. It is always necessary to limit every second tooth on both sides of the saw (first the left, then the right bends).

Tips & Tricks

With calipers, you must always be careful to use a pair of pliers for the appropriate tooth spacing. This can be tricky, as the information on pliers is often made in TPI (teeth per inch). For conversion in millimeter intervals you have to use conversion tables.

Video Board: Pushing Frost Blade (2 secs mino KILL) to its limit ! *B.I.S swords:P