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Sawblade types and what it all means, your questions answered.

Sawblade types and what it all means, your questions answered.
  Frequently asked questions about sawing.
     
RELATED INSTRUCTIONS
EN847 Standard Circular Saw Blade Instructions
EN847 Standard Circular Saw Blade Instructions
 
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Cutting Tools & Routing Safety Sheet
Cutting Tools & Routing Safety Sheet
 

Adjustable scoring saw blade line up pin

Adjustable scoring saw blade line up pin
  Q: Are spare line pins available for the Trend adjustable scoring saw blades?

A: Yes, part number IT/1920700

     

Anti-slip decking sawblade

Anti-slip decking sawblade
  Q. Can you offer a saw blade to crosscut anti-slip decking?

A. Anti-slip decking has stones embedded into the resin so firstly a stone cutting disk in a angle grinder must be used to cut the anti-slip first, then a TCT sawblade of narrow kerf than the cutting disc can be used to finish the cut in the timber. TCT saw blades will not cut the anti-slip surface.
     

Fixing Trend bushing washers in place

Fixing Trend bushing washers in place
  Q: What substance can I use use for fixing Trend Craft Pro bushing washers (reducing rings) in place?

A: Araldite two part formula.


     

Negative hook angle sawblade

Negative hook angle sawblade
  Q: What is a negative hook angle?

A: When the flats of a sawblade’s teeth are angled negatively unlike a conventional positive hook shape.

     

Sawblade for mitre cross cutting saw

Sawblade for mitre cross cutting saw
  Q: Do I need a particular type of sawblade for a Mitre Cross cutting saw?

A: Yes. A blade with a negative hook needs to be used to minimise ‘pick up’ and ‘snatching’.

     

Setting up Angles on Circular Saw Machines

Setting up Angles on Circular Saw Machines
  Q2: Do you have a gadget for easy setting up of angles on circular saw machines?

A2: Yes. See Trend product ref: ANGLEFIX. Ideal for mitre cutting of frames, skirting, architrave and beading as well as basic marking out.


     
RELATED PRODUCTS
Anglefix mitre guide
Anglefix mitre guide
ANGLEFIX
£ 29,93
 
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Wobble Saws

Wobble Saws
  Q: Does Trend sell wobble saws for spindle moulders?

A: No. We sell adjustable kerf spindle blocks. Please see our Industrial Tooling Catalogue for a range of products.

     

Sawblade Purchasing

Sawblade Purchasing
  Advice on what to look for when buying circular sawblades by Neil McMillan.

Using the latest design and production technology, circular sawblades are now available in a wide range of tooth configurations for cutting all natural timbers and wood based products, as well as non ferrous metals, plastics and other materials. Each tooth configuration offers different cutting characteristics to suit various performance requirements, such as fast or slow feed rates, in fine and coarse materials.

It is not only the teeth of a circular sawblade that play a role in its performance, but the saw plate itself needs to be designed and produced to specific criteria to avoid distortion due to flexing and friction when cutting. The combination of both the tooth and plate design must also take into account other factors such as waste material dispersion, heat expansion and noise reduction. Only by taking all these factors and other criteria into account at the design stage, can a circular sawblade be expected to produce an accurate precise cut and an acceptable standard of finish on the cut surfaces.

The Trend professional range of Tungsten Carbide Tipped sawblades is aimed at the professional user and has been designed for high performance and reliability, while remaining cost effective. The sawblades are available to fit virtually all current ranges of portable table and bench saws. Diameters of blades range from 150mm up to 400mm, with tooth forms and teeth numbers to suit most applications required by woodworkers, builders, carpenters, machinists and other craftsmen.

Sawblade Purchasing
  Top bevel clearance (a) -
Determines how cleanly the blade cuts and enables gradual penetration into material.

Radial side angle (b) -
Ensures clearance between teeth and kerf side.

Hook or rake angle (c) -
Angle of tilt of the tip.
- Positive (forward) for ripping.
- Zero for plastics and aluminium.

Top clearance angle (d) -
Ground according to hardness of material to be cut.

Tooth pitch (e) -
Dimension between two teeth and denotes number of teeth. Smaller the pitch, greater the number of teeth.

Sawblade Purchasing
  Tooth Form
The quality of cut or surface finish depends mainly on the tooth form and number of teeth around the blade circumference. Generally, the greater the number of teeth, the better the finish.

Variations in the tooth form are designed to suit different materials, specific operations or to produce the best compromise between cutting speed and quality of the surface finish.
Flat top form teeth are intended for cutting along the grain of the wood. The cutting edges of the teeth, being square to the blade axis, obviates any tendency to be deflected from the line of cut by the grain.

Alternate top bevel (ATB) teeth have the cutting edges on alternate teeth, bevelled at opposing angles. This tooth form produces a slicing cutting action across the wood fibres (grain), leaving a cleaner cut reducing break-out (spelch) and chipping along the cut edges.
Triple chip (TCP) teeth or (Alternate Trapezoidal) have every other tooth ground flat with the corners of intermediate teeth ground at 45 degrees. These intermediate teeth are also left a fraction higher than the flat tooth. This tooth form is ideal for cutting plastics and non-ferrous metals such as aluminium.

Sawblade Purchasing
  Fitting Sawblades:
Check that the spindle flanges or collars are in good condition and clean. Ensure that the blade is the correct type for the job and material and ensure it is the correct size for the machine. Check the direction of rotation of both blade and spindle before fitting. Ensure that the flanges are fitted correctly before tightening the lock nut or bolt, taking care not to cross thread it. If bushing washers are to be used to adjust the bore diameter, check that the flange diameter is greater than the sawblade bore diameter in order that the flanges clamp on the saw plate and not the bushing washer.

Sawblade Purchasing
  Caring for your sawblades
Sawblades must be handled with great care to keep them in a good condition and to protect the user. To avoid accidents or damage, they should be left in their packaging prior to fitting to the saw. The sawblades should be carried by a handle or hook fitted through the bore.
After removal from the machine, blades should be stored in their original packaging or other protective case or rack.

Cleaning and maintenance
After prolonged use the cutting edges will become dull, this is evident by slowing down of the cut, a poor quality finish and excessive heat build up. Prior to honing (sharpening) the saw blade should be cleaned with a resin solvent such as RESIN CLEANER to remove residue. A diamond flat file - fine grade can then be used to lightly hone the face of the tips removing only a minimal equal amount from each tooth. For heavier re-sharpening or fine chip removal, TCT sawblades should sent for professional re-grinding. A dry lubricant spray TRENDICOTE can then be sprayed onto the blade before use to minimise future resin build-up.

     
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PTFE Dry Lubricant Can 500ml UK mainland only
PTFE Dry Lubricant Can 500ml UK mainland only
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