Porter-Cable 28-306 instruction manual Band SAW Blades, Suggested Skip Tooth Blades and Speeds

Page 16

SUGGESTED SKIP TOOTH BLADES AND SPEEDS

MATERIAL

STEELS

Aluminum

Asbestos

Babbitt

Brake Lining

Carbon

Copper – Drawn

Duralumin

Lead

Magnesium

Paper Board

Rubber – Hard

Zinc

Plastics

Builders Board

Hardwoods

Plywoods

Softwoods

UNDER ½”

TEETH

PER

INCH

3

4

4

6

4

6

3

6

3

6

6

6

See note

6

6

6

6

FPM

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

1/2” TO 2”

TEETH

PER

INCH

3

4

3

4

3

4

3

4

3

4

4

4

4

4

4

4

4

FPM

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

2”AND UP

TEETH

PER

INCH

3

4

3

3

4

3

4

3

4

4

4

4

4

4

4

4

FPM

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

3000

NOTE:

Some types of plastics lend themselves to more pronounced results with the regular saw blades.

 

Sheets under ¼” thickness and tubing under ¼” wall thickness are not adapted to skip tooth blades.

 

 

WIDTH

1/8”

3/16”

1/4”

MIN. CUTTING RADIUS

1/4”

1/2”

3/4”

WIDTH

3/8”

1/2”

3/4”

MIN. CUTTING RADIUS

1”

1-1/4”

1-3/4”

BAND SAW BLADES

A band saw blade is a delicate piece of steel that is subjected to tremendous strain. You can obtain long use from a band saw blade if you use it properly. Be sure you use blades of the proper thickness, width, and temper for the various types of material and cuts.

Always use the widest blade possible. Use narrow blades only for sawing small, abrupt curves and for fine, delicate work. This will save blades and will produce better cuts. For cutting wood and similar materials, Delta offers blades in widths of 1/8", 1/4", 3/8", and 1/2".

Any one of a number of conditions may cause a band saw blade to break. Blade breakage is, in some cases, unavoidable, being the natural result of the peculiar stresses to which blades are subjected. Blades will break often due to avoidable causes, such as the lack of care to the blade or the blade not being properly adjusted to the band saw. The most common causes of blade breakage are:

(1)faulty alignments and adjustments of the guides.

(2)forcing or twisting a wide blade around a curve of short radius.

(3)feeding the work piece too fast into the blade.

(4)dullness of the teeth, or absence of sufficient set.

(5)improperly tensioned blade.

(6)top guide set too high above the work piece being cut.

(7)using a blade with a lumpy or improperly finished braze or weld.

(8)continuous running of the saw blade when not cutting.

Use blades that are 93½" in length on this machine.

Always use a sharp blade. Keep it free from gum and pitch. Clean frequently with a stiff fiber brush.

Narrow blades are used for cutting small circles or curves while the wider blades are best suited for straight cutting such as ripping.

A new blade, in most cases, will perform better and last longer than a re-sharpened blade.

Ensure that the blade guides are adjusted properly.

Do not force or twist the blade around a curve or a very short radius.

Feed the workpiece through the blade at a consistent rate, allow the blade to do the cutting – do not feed the work piece too fast.

Do not apply excessive tension to the blade. Set the tension only so that it drives the blade without slipping on the wheels. Narrow blades require less tension than wider blades.

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Contents Metal/Wood Cutting Band Saw General Safety Rules Safety Guidelines DefinitionsSAVE! Important Safety Instructions Save Stay ALERT, Watch What YOU are Doing Additional Safety Rules for Band Saws Failure to Follow These Rules MAY Result in Serious InjuryMotor Specifications Power ConnectionsGrounding Instructions Extension Cords Unpacking and CleaningForeword Optional Stand Carton ContentsAttaching Motor to Optional Stand Attaching Band SAW to the Optional Stand Attaching Motor PulleyAttaching the Switch Disconnect Machine from Power SourceAdjusting the Table Stop Starting and Stopping SAWTable Insert Tilting the TableAdjusting Blade Tension Adjusting the Upper Blade Guides and Blade Support BearingVertical Adjustment of the Upper Blade Guide Assembly Tracking the BladeAdjusting Lower Blade Guides and Blade Support Bearing Changing SpeedsTroubleshooting Guide Belt and Pulley Arrangements for ALL Eight Available SpeedsTrouble CUT does not Agree with Setting on the Tilt Scale Operating the Band SAW Cutting CurvesBand SAW Blades Suggested Skip Tooth Blades and SpeedsChanging the Blades LubricationPARTS, Service or Warranty Assistance AccessoriesTwo Year Limited New Product Warranty Canadian PORTER-CABLE Delta Service Centers