RECORD POWER BS250-EP [21/32] Operation bandsawing practice

8. Operation & Bandsawing Practice - cont.

Material Material Thickness

<6 mm 6-12 mm 12-25 mm >25mm

Perspex 16 TPI 14 TPI - -

Chipboard - 6 TPI 3-6 TPI 3-4 TPI

Fibre board 16 TPI 14 TPI - -

Hardboard 10 TPI - - -

Plywood 10 TPI 8 TPI 6 TPI 3-4 TPI

Strawboard 14 TPI 10 TPI - -

Cork 14 TPI 6 TPI 3 TPI 3-4 TPI

Leather 14 TPI - - -

Rubber 10 TPI 8 TPI - -

Wood -log - - - 3-4 TPI

Wood -soft 6 TPI 3-6 TPI 3-4 TPI 3-4 TPI

Wood -hard 6 TPI 3-6 TPI 3-4 TPI 3-4 TPI

Wood -wet - - - 3-4 TPI

Blade Selection (TPI) - Cont.

Having selected an appropriate blade for the particular thickness and type

of material to be sawn, it is essential that the saw blade is allowed to cut

freely by not applying too much pressure.

• The need for excessive pressure is likely to be a result of the incorrect

blade selection or a worn blade and will result in inaccurate cutting and

possibly blade breakage.

Blade Selection (Width)

• When cutting shapes, the width of the blade limits the minimum radius

that can be cut.

• If the blade is too wide for the cutting radius the blade will twist and

possibly jam or break.

• The smaller the radius the narrower the blade has to be.

The diagram below provides guidance on the minimum radius to be cut

with the most commonly used blade widths.

Blade width: 3/8”

Min radius: 2

”

Blade width: 1/4”

Min radius: 1

”

Blade width: 1/2”

Min radius: 3

”